定价： 515元 加购物车

5.1 Certain properties, namely thickness and density, of SFRM are basic. It is the intent of these test methods to provide procedures to determine these properties.1.1 These test methods cover procedures for determining thickness and density of sprayed fire-resistive material (SFRM) used in structural assemblies. These include sprayed fiber and cementitious types. The test methods are applicable to both laboratory and field procedures, as indicated in Section 7.1.2 These test methods require the application of SFRM in accordance with the manufacturers’ published instructions. The apparatus, materials, and procedure used to apply the SFRM for laboratory tests shall be the same as is used for the construction of either of the test assemblies described in Test Methods E119 and E84.1.3 There is no intent in these test methods to establish levels of performance.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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定价： 712元 加购物车

4.1 This practice provides procedures commonly used for measuring the thickness of steel sheet products under the jurisdiction of ASTM Committees A01 and A05 and their subcommittees as designated by a purchaser in a purchase order or contract.4.2 Thickness is a significant quality characteristic of steel sheet products. The ability to accurately measure thickness using hand micrometers is critical in determining product conformance to specifications. The procedures for measuring thickness characteristics of steel sheet products are provided so that purchasers and suppliers have common measuring procedures for thickness measurements. The intention of these measuring methods is not to provide dimensional specifications for thickness characteristics, but rather common procedures for quantifying thickness values. For determining compliance with thickness specifications, references are provided to appropriate ASTM standards.4.3 This practice may be used by other ASTM Committees and other standards writing bodies for the purpose of measuring thickness of metal sheet products.1.1 This practice covers definitions and procedures for measuring the thickness of uncoated steel sheet and nonmetallic and metallic-coated steel sheet. The methods described are designed and intended for use in both laboratory and plant situations and their environments.1.2 The flat steel product shall conform to all the requirements of the appropriate specifications as follows: Specifications A109/A109M, A505, A568/A568M, A635/A635M, A684/A684M, and A924/A924M.1.3 Quantitative limits are not addressed and are established in the general requirements, or individual product specifications, or both; or when applicable, as agreed to between supplier and user.1.4 Units—This specification is applicable to orders in either inch-pound units or SI units. Values in inch-pound and SI units are not necessarily equivalent. Within the text, SI units are shown in brackets. Each system shall be used independently of the other.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 加购物车

定价： 571元 加购物车

4.1 The ability of a multilayer nickel deposit to enhance corrosion resistance is a function of the difference in the electrode potentials of the nickel layers (as measured individually at a fixed current density in a given electrolyte versus a reference electrode) and the thicknesses of the layers. The potential differences must be sufficient to cause the bright nickel or top layer to corrode preferentially and sacrificially with respect to the semi-bright nickel layer beneath it.4.2 This test procedure allows the measurement of these potential differences directly on an electroplated part rather than on separate foil specimens in such a way that time determines the thickness of each layer, while the potential difference between nickel layers is an indication of the corrosion resistance of the total nickel deposit.4.3 The interpretation and evaluation of the results of this test should be by agreement between the purchaser and the manufacturer.NOTE 1: This test may be used as a quality assurance test of the multilayer nickel coatings applied in production. It should be understood that due to many factors that influence the progress of corrosion during actual use of the part, the performance of different multilayer nickel deposits in the test cannot be taken as an absolute indicator of the relative corrosion resistance of these deposits in service.1.1 This test method closely estimates the thickness of individual layers of a multilayer nickel electrodeposit and the potential differences between the individual layers while being anodically stripped at constant current density.2,31.2 This test method does not cover deposit systems other than multilayer electroplated nickel deposits.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 加购物车

定价： 590元 加购物车

This specification deals with the hot-rolled, heavy thickness coils available for three designations: alloy steel, drawing steel, and structural alloy steel. Alloy steel is intended for general or miscellaneous use where bending and moderate forming is required. Drawing steel is used for severe cold plastic deformation such as deep drawn or severely formed parts. The material is available only in coils such as strip and sheet. As-rolled and annealed heat treatment shall be used for manufacturing the material. Drawing steel shall be furnished with a spheroidized annealed heat treatment unless otherwise specified. Heat analysis shall conform to the required grade specified for standard alloy steel, nonstandard alloy steel, and structural alloy steel. Grades shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium, molybdenum, and vanadium. Mechanical tests for regular quality alloy steel and strip are not applicable; but for drawing steel and structural alloy steel, tension and hardness tests are required.1.1 This specification covers hot-rolled, heavy thickness coils beyond the size limits of Specifications A506 and A507.1.2 The product is available in three designations: Alloy Steel, Drawing Steel, and Structural Alloy Steel.1.3 Alloy steel is furnished to chemical composition requirements and is intended primarily for general or miscellaneous use where bending and moderate forming is a requirement.1.4 Drawing steel is produced principally for applications involving severe cold plastic deformation such as deep drawn or severely formed parts.1.4.1 Drawing steel may be furnished in several conditions, heat treatments, surface finishes, and edges, as specified herein.1.5 Structural steel is furnished to chemical composition requirements and to specific mechanical property requirements which may include tension tests, hardness tests, or other commonly accepted mechanical tests.1.5.1 The formability of structural steel decreases with increasing yield strength or hardness. Therefore, product design in relation to the mechanical properties of the grade used must be considered.1.6 This material is available only in coils described as follows:Product Size Limits, Coils OnlyWidth, in. [mm] Thickness, in. [mm]Strip Over 8 to 12, incl 0.230 to 1.000, incl  [Over 200 to 300] [Over 6.0 to 25]Sheet Over 12 0.230 to 1.000, incl  [Over 300] [from 6.0 through 25]1.7 Sheet and strip in coils of sizes noted in 1.6 are covered by this specification only with the following provisions:1.7.1 The material is not to be converted into steel plates for structural or pressure vessel use unless tested in complete accordance with the appropriate sections of Specifications A6/A6M (plates provided from coils) or A20/A20M (plates produced from coils). A plate produced in this manner is no longer governed by this sheet steel specification and since this material is now plate, the appropriate plate standard must now apply.1.7.2 The dimensional tolerances of Specification A635/A635M are applicable to material produced to this specification.1.7.3 The material is to be fed directly from coils into a blanking press, drawing or forming operation, tube mill, rolling mill, or sheared or slit into blanks for subsequent drawing or forming.1.8 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.TABLE 1 Standard Steels Commonly Produced for Alloy Steel Sheet and StripSteelDesignationNo. Chemical Composition Ranges and Limits, % (Heat Analysis)A  C Mn P S SiB Ni Cr Mo VE3310C 0.08-0.13 0.45-0.60 0.025 0.025 0.15-0.30 3.25-3.75 1.40-1.75 . . . . . .4012C 0.09-0.14 0.75-1.00 0.025 0.025 0.15-0.30 . . . . . . 0.15-0.25 . . .4118 0.18-0.23 0.70-0.90 0.025 0.025 0.15-0.30 . . . 0.40-0.60 0.08-0.15 . . .4130 0.28–0.33 0.40–0.60 0.025 0.025 0.15-0.30 . . . 0.80–1.10 015–0.25 . . .4135 0.33-0.38 0.70-0.90 0.025 0.025 0.15-0.30 . . . 0.80-1.10 0.15-0.25 . . .4137 0.35-0.40 0.70-0.90 0.025 0.025 0.15-0.30 . . . 0.80-1.10 0.15-0.25 . . .4140 0.38–0.43 0.75–1.00 0.025 0.025 0.15-0.30 . . . 0.80–1.10 0.15-0.25 . . .4142 0.40-0.45 0.75-1.00 0.025 0.025 0.15-0.30 . . . 0.80-1.10 0.15-0.25 . . .4145 0.43-0.48 0.75-1.00 0.025 0.025 0.15-0.30 . . . 0.80-1.10 0.15-0.25 . . .4147C 0.45-0.50 0.75-1.00 0.025 0.025 0.15-0.30 . . . 0.80-1.10 0.15-0.25 . . .4150 0.48-0.53 0.75-1.00 0.025 0.025 0.15-0.30 . . . 0.80-1.10 0.15-0.25 . . .4320 0.17-0.22 0.45-0.65 0.025 0.025 0.15-0.30 1.65-2.00 0.40-0.60 0.20-0.30 . . .4340 0.38–0.43 0.60–0.80 0.025 0.025 0.15-0.30 1.65-2.00 0.70–0.90 0.20-0.30 . . .E4340 0.38-0.43 0.65-0.85 0.025 0.025 0.15-0.30 1.65-2.00 0.70-0.90 0.20-0.30 . . .4520C 0.18-0.23 0.45-0.65 0.025 0.025 0.15-0.30 . . . . . . 0.45-0.60 . . .4615 0.13-0.18 0.45-0.65 0.025 0.025 0.15-0.30 1.65-2.00 . . . 0.20-0.30 . . .4620 0.17-0.22 0.45-0.65 0.025 0.025 0.15-0.30 1.65-2.00 . . . 0.20-0.30 . . .4718 0.16-0.21 0.70-0.90 0.025 0.025 0.15-0.30 0.90-1.20 0.35-0.55 0.30-0.40 . . .4815 0.13-0.18 0.40-0.60 0.025 0.025 0.15-0.30 3.25-3.75 . . . 0.20-0.30 . . .4820 0.18-0.23 0.50-0.70 0.025 0.025 0.15-0.30 3.25-3.75 . . . 0.20-0.30 . . .5015 0.12-0.17 0.30-0.50 0.025 0.025 0.15-0.30 . . . 0.30-0.50 . . . . . .5046 0.43-0.50 0.75-1.00 0.025 0.025 0.15-0.30 . . . 0.20-0.35 . . . . . .5115 0.13-0.18 0.70-0.90 0.025 0.025 0.15-0.30 . . . 0.70-0.90 . . . . . .5120 0.17–0.22 0.70–0.90 0.025 0.025 0.15-0.30 . . . 0.70–0.90 . . . . . .5130 0.28–0.33 0.70-0.90 0.025 0.025 0.15-0.30 . . . 0.80-1.10 . . . . . .5132 0.30–0.35 0.60-0.80 0.025 0.025 0.15-0.30 . . . 0.75-1.00 . . . . . .5140 0.38–0.43 0.70–0.90 0.025 0.025 0.15-0.30 . . . 0.70–0.90 . . . . . .5150 0.48–0.53 0.70–0.90 0.025 0.025 0.15-0.30 . . . 0.70–0.90 . . . . . .5160 0.56–0.64 0.75–1.00 0.025 0.025 0.15-0.30 . . . 0.70–0.90 . . . . . .E51100C 0.95–1.10 0.25-0.45 0.025 0.025 0.15-0.30 . . . 0.90-1.15 . . . . . .E52100 0.98–1.10 0.25-0.45 0.025 0.025 0.15-0.30 . . . 1.30-1.60 . . . . . .6150 0.48–0.53 0.70-0.90 0.025 0.025 0.15-0.30 . . . 0.80-1.10 . . . 0.15 min6158C 0.55–0.62 0.70–1.10 0.025 0.025 0.15-0.30 . . . 0.90–1.20 . . . 0.10–0.208615 0.13–0.18 0.70–0.90 0.025 0.025 0.15-0.30 0.40–0.70 0.40–0.60 0.15–0.25 . . .8617 0.15–0.20 0.70-0.90 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8620 0.18–0.23 0.70–0.90 0.035 0.035 0.15-0.30 0.40-0.70 0.40–0.60 0.15–.025 . . .8630 0.28–0.33 0.70-0.90 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8640 0.38–0.43 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8642C 0.40-0.45 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8645 0.43-0.48 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8650C 0.48-0.53 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8655 0.501-0.59 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8660 0.55-0.65 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.15-0.25 . . .8720 0.18-0.23 0.70-0.90 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.20-0.30 . . .8735C 0.33-0.38 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.20-0.30 . . .8740C 0.38-0.43 0.75-1.00 0.025 0.025 0.15-0.30 0.40-0.70 0.40-0.60 0.20-0.30 . . .9260 0.56-0.64 0.75-1.00 0.025 0.025 1.80-2.20 . . . . . . . . . . . .9262C 0.55-0.65 0.75-1.00 0.025 0.025 1.80-2.20 . .  0.25-0.40 . . . . . .E9310C 0.08-0.13 0.45-0.65 0.025 0.025 0.20-0.35 3.30-35.0 1.00-1.40 0.08-0.15 . . .(A) The chemical ranges and limits shown are subject to product analysis tolerances. See Specification A505.(B) Other silicon ranges are available. Consult the producer.(C) Not an SAE Steel Designation.1.8.1 Within the text the SI units are shown in brackets.1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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定价： 646元 加购物车

4.1 This test method may be used as a substitute for, or in conjunction with, coring to determine the thickness of slabs, pavements, decks, walls, or other plate structures. There is a certain level of systematic error in the calculated thickness due to the discrete nature of the digital records that are used. The absolute systematic error depends on the plate thickness, the sampling interval, and the sampling period.4.2 Because the wave speed can vary from point-to-point in the structure due to differences in concrete age or batch-to-batch variability, the wave speed is measured (Procedure A) at each point where a thickness determination (Procedure B) is required.4.3 This test method is a pplicable to plate-like structures with lateral dimensions at least six times the thickness. These minimum lateral dimensions are necessary to prevent other modes3 of vibration from interfering with the identification of the thickness mode frequency in the amplitude spectrum. As explained in Note 12, the minimum lateral dimensions and acceptable sampling period are related.4.4 The maximum and minimum thickness that can be measured is limited by the details of the testing apparatus (transducer response characteristics and the specific impactor). The limits shall be specified by manufacturer of the apparatus, and the apparatus shall not be used beyond these limits. If test equipment is assembled by the user, thickness limitations shall be established and documented.4.5 This test method is not applicable to plate structures with overlays, such as a concrete bridge deck with an asphalt or portland cement concrete overlay. The method is based on the assumption that the concrete plate has the same P-wave speed throughout its depth.4.6 Procedure A is performed on concrete that is air dry as high surface moisture content may affect the results.4.7 Procedure B is applicable to a concrete plate resting on a subgrade of soil, gravel, permeable asphalt concrete, or lean portland cement concrete provided there is sufficient difference in acoustic impedance3 between the concrete and subgrade or there are enough air voids at the interface to produce measurable reflections. If these conditions are not satisfied, the waveform will be of low amplitude and the amplitude spectrum will not include a dominant peak at the thickness frequency. If the interface between the concrete and subgrade is rough, the amplitude spectrum will have a rounded peak instead of a sharp peak associated with a flat surface.4.8 The procedures described are not influenced by traffic noise or low frequency structural vibrations set up by normal movement of traffic across a structure.4.9 The procedures are not applicable in the presence of mechanical noise created by equipment impacting (jack hammers, sounding with a hammer, mechanical sweepers, and so forth) on the structure.4.10 Procedure A is not applicable in the presence of high amplitude electrical noise, such as may produced by a generator or some other source, that is transmitted to the data-acquisition system.1.1 This test method covers procedures for determining the thickness of concrete slabs, pavements, bridge decks, walls, or other plate-like structures using the impact-echo method.1.2 The following two procedures are covered in this test method:1.2.1 Procedure A: P-Wave Speed Measurement—This procedure measures the time it takes for the P-wave generated by a short-duration, point impact to travel between two transducers positioned a known distance apart along the surface of a structure. The P-wave speed is calculated by dividing the distance between the two transducers by the travel time.1.2.2 Procedure B: Impact-Echo Test—This procedure measures the frequency at which the P-wave generated by a short-duration, point impact is reflected between the parallel (opposite) surfaces of a plate. The thickness is calculated from this measured frequency and the P-wave speed obtained from Procedure A.1.2.3 Unless specified otherwise, both Procedure A and Procedure B must be performed at each point where a thickness determination is made.1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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5.1 The thickness of a coating is often critical to its performance. This eddy-current method is nondestructive and is suitable for measuring the thickness of anodic coatings on aluminum, as well as the thickness of most nonconductive coatings on nonmagnetic basis metals.5.2 This test method requires that the conductivity of the substrate be the same in the reference standard used for calibration adjustment and in the coated article to be measured.1.1 This test method covers the use of eddy-current instruments for the nondestructive measurement of the thickness of a nonconductive coating on a nonmagnetic basis metal. It is intended to supplement manufacturers’ instructions for the operation of the instruments and is not intended to replace them.1.2 This test method is particularly useful for measuring the thickness of an anodic coating on aluminum alloys. Chemical conversion coatings are too thin to be measured by this test method.1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 加购物车

5.1 This test method is designed to produce through-thickness failure data for structural design and analysis, quality assurance, and research and development. Factors that influence the through-thickness tensile strength, and should therefore be reported, include the following: material and fabric reinforcement, methods of material and fabric preparation, methods of processing and specimen fabrication, specimen stacking sequence, specimen conditioning, environment of testing, specimen alignment, speed of testing, time at temperature, void content, and volume reinforcement content.1.1 This test method determines the through-thickness “flatwise” tensile strength and elastic modulus of fiber reinforced polymer matrix composite materials. A tensile force is applied normal to the plane of the composite laminate using adhesively bonded thick metal end-tabs. The composite material forms are limited to continuous fiber (unidirectional reinforcement or two-dimensional fabric) or discontinuous fiber (nonwoven or chopped) reinforced composites.1.2 The through-thickness strength results using this test method will in general not be comparable to Test Method D6415 since this method subjects a relatively large volume of material to an almost uniform stress field while Test Method D6415 subjects a small volume of material to a non-uniform stress field.1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.1.3.1 Within the text, the inch-pound units are shown in brackets.1.4 This standard may involve hazardous materials, operations, and equipment.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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4.1 Coating film thickness plays a critical role in the performance of the final product. This includes physical properties (abrasion/scratch resistance, color, gloss), chemical properties (solvent resistance), corrosion resistance, and long-term durability (color change, chalk, fade).4.2 The non-destructive measurement system based on ruggedized optical interference transforms signal outputs in coating film thickness using digital formulas (or “recipes”) which are reproducible from one instrument to another.4.3 The ROI measurement unit takes a significant number of measurements which can be read in a determined period of time and each of these data points is recorded and reportable.4.4 Due to the number of variables that can affect film thickness during application and the number of variables that must be set in the measurement unit while determining a recipe, it is important for the producer and the user to agree upon recipe settings depending on the coating system.1.1 This test method encompasses measuring the film thickness of a coil coated organic coating layer. Operators can use this method in process during the coating application or in a laboratory setting.1.2 This test method does not specify the expected film thickness/test results for a coating, nor the specific “recipe” file needed to measure a coating.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 加购物车

定价： 590元 加购物车

3.1 Measurement of dry film thickness of organic coatings by physically cutting through the film and optically observing and measuring the thickness offers the advantage of direct measurement as compared with nondestructive means.3.2 Constituent coating layers of an overall thickness of a coating system can usually be measured individually by this test method, provide adhesion between each layer is sufficient. (However, this can be difficult in cases where the primer, topcoat, or multiple coating layers have the same, or very similar, appearance.)FIG. 1 Typical Crater Formed by Boring DeviceNOTE 1: The drawing is not to scale. It is for illustration purposes only.NOTE 2: θ  = 5.710593°  Tan θ = A/B = 0.1   A = 0.1B1.1 This test method covers the measurement of dry film thickness (DFT) of coating films by microscopic observation of a precision-cut, shallow-angle crater bored into the coating film. This crater reveals cross sectional layers appearing as rings, whose width is proportional to the depth of the coating layer(s) and allows for direct calculation of dry film thickness.1.1.1 The Apparatus, Procedure, and Precision and Bias discussions include Method A and Method B. Method A involves the use of an optical measurement apparatus which is no longer commercially available, but remains a valid method of dry film measurement. Method B is a software driven measurement procedure that supersedes Method A.1.2 The substrate may be any rigid, metallic material, such as cold-rolled steel, hot-dipped galvanized steel, aluminum, etc. The substrate must be planar with the exception of substrates exhibiting “coil set,” which may be held level by the use of the clamping tool on the drilling device.NOTE 1: Variations in the surface profile of the substrate may result in misrepresentative organic coating thickness readings. This condition may exist over substrates such as hot-dipped, coated steel sheet. This is true of all “precision cut” methods that are used to determine dry film thickness of organic coatings. This is why several measurements across the strip may be useful if substrate surface profile is suspect.1.3 The range of thickness measurement is 0 to 3.5 mils (0 to 89 μm).NOTE 2: For DFT measurements of films greater than 3.5 mils (89μm), but less than 63 mils (1600 μm), a 45° borer may be used in accordance with this test method, with the exception of 6.8, where the micrometer reading would provide a direct read-out, and division by ten would be unnecessary per 4.3.1 Method A.1.4 Measurements may be made on coil-coated sheet, certain formed products, or on test panels.1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 加购物车