微信公众号随时随地查标准

QQ交流1群(已满)

QQ群标准在线咨询2

QQ交流2群

购买标准后,可去我的标准下载或阅读

4.1 The performance and quality of electroplated or conversion-coated zinc alloy die casting depends upon the surface cleanliness and condition. Various metals are electroplated or conversion coatings are established on zinc alloys for decorative or engineering finish. The common electroplates applied are usually copper, nickel, and chromium for decorative and functional uses. The common conversion coatings applied are phosphates, chromates, and anodized coatings. Electroplated zinc die castings and conversion coatings on zinc die castings are used in many industries such as the marine, automotive, plumbing fixtures, and appliance industries.1.1 This guide is intended as an aid in establishing and maintaining a procedure for preparing zinc alloy die castings for electroplating and conversion coatings. It is primarily intended for the preparation of Alloys UNS Z33521 (AG-40A) and UNS Z35530 (AC-41A) (Specification B86) for electroplating with copper, nickel, and chromium (Specification B456).1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.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 / 折扣价: 502 加购物车

在线阅读 收 藏

This practice covers a system for designating cast and wrought nonferrous metals and alloys. It was originally adopted for light metals and alloys that are cast and wrought and later extended to heavier base-metal die-casting alloys. Chemical composition limits serve as the basis for the Unified Numbering System (UNS) designations. The temper designations used for all metal forms, except for ingots, follow the alloy designation.1.1 This practice covers a system for designating die casting alloys of zinc, tin and lead. Those designations currently being used in specifications under the jurisdiction of Committees B02 on Nonferrous Metals are listed in  Table X2.1 in Appendix X2.NOTE 1: The alloy designations now being used in Committee B07 specifications for aluminum and aluminum-alloy wrought and cast products conform to ANSI H35.1. Alloys formerly codified by this practice and the corresponding ANSI designations are shown in Tables X3.1 and X3.2 of Appendix X3 for legacy purposes.NOTE 2: The alloy designations now being used in Committee B07 specifications for magnesium and magnesium-alloy wrought and cast products conform to Practice B951, as indicated in Appendix X4. Alloy designations formerly codified by this practice are no longer relevant.1.2 The equivalent Unified Numbering System (UNS) alloy designations shown in the appendixes are in accordance with Practice E527.

定价: 0元 / 折扣价: 0

在线阅读 收 藏
ASTM B85/B85M-18e1 Standard Specification for Aluminum-Alloy Die Castings Active 发布日期 :  1970-01-01 实施日期 : 

This specification covers aluminum-alloy die castings of all compositions. Unless otherwise specified, only aluminum alloy conforming to the requirements of Specification B 179 or producer's foundry scrap shall be used in the remelting furnace from which molten metal is taken for pouring directly into castings. Additions of small amounts of modifiers and grain refining elements or alloys are permitted. Pure materials, recycled materials, and master alloys and material not conforming to Specification B 179 may be used to make alloys conforming to this specification, provided chemical analysis can be taken and adjusted to conform to the chemical requirements prior to pouring any castings. The castings shall be supplied such that they can be laid out and machined to the final dimensions specified on the blueprints or drawings.1.1 This specification covers aluminum-alloy die castings designated as shown in Table 1.1.2 This specification is for aluminum-alloy die castings used in general purpose applications. It may not address the mechanical properties, integrity testing, and verification required for highly loaded or safety critical applications.1.3 Alloy and temper designations are in accordance with ANSI H35.1/H35.1(M).1.4 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units.1.5 For acceptance criteria for inclusion of new aluminum and aluminum alloys and their properties in this specification, see Annex A1 and Annex A2.1.6 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 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.1.7 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.1.8 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 / 折扣价: 502 加购物车

在线阅读 收 藏

This specification establishes the requirements for copper and copper die forgings produced by hot pressing method. The forgings included here are designated with the following Copper or Copper Alloy UNS Nos.: C11000 (copper), C14500 (copper-tellurium alloy), C14700 (copper-sulfur alloy), C36500 (leaded Muntz metal), C37000 (free-cutting Muntz metal), C37700 (forging brass), C46400 (naval brass), C48200 (medium leaded naval brass), C48500 (leaded naval brass), C61900 (aluminum bronze), C62300 (9% aluminum bronze), C63000 and C63200 (aluminum-nickel bronze), C64200 (aluminum-silicon bronze), C64210 (6.7% aluminum-silicon bronze), C65500 (high-silicon bronze), C67500 (manganese bronze), C67600, C69300 (copper-zinc-silicon alloy), C70620 (90% copper-10% nickel alloy), C71520 (70% copper-30% nickel alloy), and C77400 (45% nickel-10% silver alloy). The materials for manufacture shall be rods, billets, or blanks of such purity and soundness as to be suitable for processing by hot pressing. Products shall be tested to examine their conformance to mechanical (tensile and yield strengths, and elongation), dimensional, and chemical composition requirements.1.1 This specification establishes the requirements for copper and copper alloy die forgings produced by the hot pressing method. The following copper and copper alloys are included:Copper or Copper Alloy UNS No. NameC11000     copperC14500     copper-telluriumC14700     copper-sulfurC27450     plumbing brassC27451     plumbing brassC27453     copper zinc alloyC28500     copper-zinc brassC35330     leaded brassC36300     copper-zinc-leadC36500     leaded Muntz metalC37000     free-cutting Muntz metalC37700     forging brassC46400     naval brassC46500     naval brass, arsenicalC46750     tin brassC48200     medium leaded naval brassC48500     leaded naval brassC48600     naval brassC48640     DZR brassC48645     DZR tin brassC49250     copper-zinc-bismuth alloyC49255     copper-zinc-bismuth-nickel alloyC49260     copper-zinc-bismuth alloyC49265     copper-zinc-tin-bismuth, low leadedC49300     copper-zinc-tin-bismuth alloyC49340     copper-zinc-tin-bismuth alloyC49345     copper-zinc-tin-bismuth, low leadedC49350     copper-zinc-tin-bismuth alloyC49355     bismuth brassC61900     aluminum bronzeC62300     aluminum bronze, 9 %C63000     aluminum-nickel bronzeC63200     aluminum-nickel bronzeC64200     aluminum-silicon bronzeC64210     aluminum-silicon bronze, 6.7 %C65500     high-silicon bronze (A)C65680     high-silicon bronzeC67500     manganese bronze (A)C67600     . . .C69300     copper-zinc-siliconC69410     copper-zinc-siliconCopper or Copper Alloy UNS No. NameC69850     copper-zinc-siliconC70620     copper-nickel 90-10C71520     copper-nickel 70-30C77400     nickel silver, 45-10C87700     silicon bronzeC87710     silicon bronze   Copper Alloy EN 1412 Nos. NameCW612N     forging brassCW617N     forging brass1.2 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.NOTE 1: Nominal composition and relative forgeability ratings are given in Appendix X1. Copper-nickel alloys C70620 and C71520 are intended for welded applications with seawater exposure.NOTE 2: Guidelines for design and development of forgings are included in Appendix X2.NOTE 3: Wrought product intended for hot forging is described in Specification B124/B124M.1.3 The following safety caveat pertains only to Section 10 of this specification. 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: 646元 / 折扣价: 550 加购物车

在线阅读 收 藏

5.1 Dimensional Change When Compacting and Sintering Metal Powders:5.1.1 The dimensional change value obtained under specified conditions of compacting and sintering is a material characteristic inherent in the powder.5.1.2 The test is useful for quality control of the dimensional change of a metal powder mixture, to measure compositional and processing changes and to guide in the production of PM parts.5.1.3 The absolute dimensional change may be used to classify powders or differentiate one type or grade from another, to evaluate additions to a powder mixture or to measure process changes, and to guide in the design of tooling.5.1.4 The comparative dimensional change is mainly used as a quality control test to measure variations between a lot or shipment of metal powder and a reference powder of the same material composition.5.1.5 Factors known to affect size change are the base metal powder grade; type and lot; particle size distribution; level and types of additions to the base metal powder; amount and type of lubricant, green density, as well as processing conditions of the test specimen; heating rate; sintering time and temperature; sintering atmosphere; and cooling rate.5.2 Dimensional Change of Various PM Processing Steps:5.2.1 The general procedure of measuring the die or a test compact before and after a PM processing step, and calculating a percent dimensional change, is also adapted for use as an internal process evaluation test to quantify green expansion, repressing size change, heat treatment changes, or other changes in dimensions that result from a manufacturing operation.1.1 This standard covers a test method that may be used to measure the sum of the changes in dimensions that occur when a metal powder is first compacted into a test specimen and then sintered.1.2 The dimensional change is determined by a quantitative laboratory procedure in which the arithmetic difference between the dimensions of a die cavity and the dimensions of a sintered test specimen produced from that die is calculated and expressed as a percent growth or shrinkage.1.3 With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3) and gram (g) units is the long-standing industry practice, the values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.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 / 折扣价: 438 加购物车

在线阅读 收 藏

This specification covers commercial zinc, zinc-aluminum castings and continuous cast bar stock. Seven alloy compositions are specified and designated: Alloy 3; Alloy 7; Alloy 5; Alloy 2; ZA-8; ZA-12; ZA-27. The metal used in the manufacture of die castings shall be zinc alloy of a specified chemical composition conforming to the requirements specified. Impact test and tension test shall be made to conform to the specified requirements.1.1 This specification covers commercial zinc, zinc-aluminum castings and continuous cast bar stock, as designated and specified in Table 1. Eight alloy compositions are specified and designated as follows:Common Traditional ASTM A UNS       Alloy 3 Zamak 3 AG 40A B Z33525Alloy 7 Zamak 7 AG 40B Z33527Alloy 5 Zamak 5 AC 41A B Z35533Alloy 2 Zamak 2 AC 43A Z35545ZA-8 ZA-8  ... Z35638ZA-12 ZA-12  ... Z35633ZA-27 ZA-27  ... Z35841ACuZinc 5C    ... Z465411.2 Zinc Alloys Z33525, Z33527, Z35533, and Z35545 are used primarily in the manufacture of pressure die castings. Zinc-Aluminum Alloys Z35638, Z35633, and Z35841 are used in the manufacture of both foundry and pressure die castings. These alloys are also fabricated into continuous cast bar stock used for prototyping and screw machine stock.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described in Appendix X1.1.5 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, 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: 590元 / 折扣价: 502 加购物车

在线阅读 收 藏

This specification covers aluminum-base and zinc-base master alloys used to make zinc die-casting alloys. The material may be made by any suitable process. The material covered by this specification shall be of uniform quality and shall be free of dross, flux, or other harmful contamination. If the material is in shot form, it shall be sound, uniform size, and free of a heavily oxidized surface coating, stringers, and moisture. Aluminum-base master alloys (hardeners) shall be tested and conform to the required chemical composition for aluminum, copper, iron, silicon, manganese, magnesium, zinc, chromium, nickel, tin, lead, and cadmium. Zinc-base master alloys shall conform to the color code requirements and to the required alloy composition for aluminum, magnesium, iron, copper, lead, cadmium, tin, and zinc. The weight of jumbo ingots shall conform to the required weight limits. 1.1 This specification covers aluminum-base and zinc-base master alloys used to make zinc die-casting alloys. Alloy compositions specified for aluminum-base master alloys (hardeners) are designated as shown in Table 1. Alloy compositions specified for the zinc-base master alloys are designated as shown in Table 2. 1.2 Aluminum alloy hardeners are added to Special High Grade zinc (per Specification B6) in the proper alloying ratios, as shown in Table 1, to produce zinc alloys for die casting. 1.3 Zinc-base master alloy is added to Special High Grade zinc (per Specification B6) in the proper alloying ratio, as shown in Table 3, to produce zinc alloy for die casting. 1.4 Master alloys may be supplied in the form of shot, bar, ingot, or jumbo ingot as specified by the purchaser. Specification B897 covers configuration of jumbo, block, half block, and slab ingot. 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, 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: 515元 / 折扣价: 438 加购物车

在线阅读 收 藏

5.1 Trending the wear, contamination, consistency, and oxidative properties of a lubricating grease is a crucial part of condition-monitoring programs. Changes in these properties or deviations from the new grease can be indicative of problems within the lubricated component, such as the mixing of incompatible thickener types, excessive wear or contaminant levels, or significant depletion of antioxidant levels. These test methods also makes it possible to develop trends that can be used to predict failures before they occur and allow for corrective action to be taken.1.1 This test method covers the determination and evaluation of flow properties, wear levels, contaminants, and oxidative condition of new and in-service lubricating grease.1.2 This test method provides guidance on evaluating in-service grease samples, NLGI grades 00 to 3, for wear, consistency, contamination, and oxidation.1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3.1 Exception—The exception to this will be where units of references were developed by the developers of the test equipment and necessary to report the results of the test.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: 590元 / 折扣价: 502 加购物车

在线阅读 收 藏
ASTM B94-18 Standard Specification for Magnesium-Alloy Die Castings Active 发布日期 :  1970-01-01 实施日期 : 

This specification covers magnesium-alloy die castings. The magnesium alloys used for the manufacture of die castings shall conform to the chemical composition requirements of this specification. The producer or supplier is responsible for the performance of all inspection and test requirements when specified in the contract or purchase order. Samples for chemical analysis shall be taken from the material by drilling, sawing, milling, turning, or clipping a representative piece or pieces to obtain a weight of prepared sample the soundness of die castings which shall conform to standards or requirements agreed upon between the producer or supplier and the purchaser. Die castings shall have uniform quality that is free from injurious discontinuities that will adversely affect their serviceability. All castings shall be properly marked for identification with the part number, name or brand of the producer, as agreed upon the contract.1.1 This specification covers magnesium-alloy die castings. Current alloy compositions are specified under the designations shown in Table 1.2(A) Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements is suspected or indicated in the course of routine analysis, further analysis shall be made to determine that these other elements are not in excess of 0.3 %.(B) The following applies to all specified limits in this table: For purposes of acceptance and rejection an observed value or a calculated value obtained from analysis should be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit in accordance with the rounding procedure prescribed in Section 3 of Practice E29.(C) Where single units are shown, these indicate the maximum amounts permitted.(D) ASTM alloy designations were established in accordance with Practice B951, UNS designations were established in accordance with Practice E527.(E) In alloys AS41B, AM50A, AJ52A, AM60B, AJ62A, and AZ91D, if either the minimum manganese limit or the maximum iron limit is not met, then the iron/manganese ratio shall not exceed 0.010, 0.015, 0.015, 0.021, 0.021, and 0.032, respectively.(F) Alloys AJ52A, AJ62A, and AS21B are patented compositions for elevated temperature applications. Interested parties are invited to submit information regarding the identification of alternatives to these compositions to ASTM International. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.1.2 The values stated in inch-pound units are standard. The SI values in parentheses are provided for information only.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 / 折扣价: 502 加购物车

在线阅读 收 藏
26 条记录,每页 10 条,当前第 1 / 3 页 第一页 | 上一页 | 下一页 | 最末页  |     转到第   页