1.1 This specification covers material requirements for high-purity dense yttria tetragonal zirconium oxide polycrystal (Y-TZP) for surgical implant applications.1.2 The values stated in SI units are to be regarded as the standard.

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8.1 This specification recognizes that the effectiveness of a sheet radiant barrier is dependent on proper installation. Practices C1743 and C1744 address use and installation of radiant barriers.8.2 This specification identifies the material properties that are important for sheet radiant barrier products. When appropriate, values for the properties have been stated.8.3 When specific material properties are required for a particular application the user shall consult the manufacturer.8.4 Radiant barriers shall be free of dust or other contaminants to remain effective.AbstractThis specification covers the general physical property requirements of radiant barrier materials for use in building construction. The scope is specifically limited to requirements for radiant barrier sheet materials that consist of at least one surface, such as metallic foils or metallic deposits mounted or unmounted on substrates. Sheet radiant barrier materials shall consist of low emittance surface(s) that may be in combination with any substrates and adhesives required to meet the specified physical material properties. The following test methods shall be performed: surface emittance; water vapor transmission; surface burning characteristics; corrosivity; tear resistance; and adhesive performance.1.1 This specification covers the general physical property requirements of radiant barrier materials for use in building construction. The scope is specifically limited to requirements for radiant barrier sheet materials that consist of at least one surface having a far-infrared emittance of 0.1 or less, such as metallic foils or metallic deposits mounted or unmounted on substrates.1.2 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 The following safety hazards caveat pertains only to the test methods (Section 10) described in 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.

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1.1 This is a material specification covering hybrid geosynthetic paving mats typically used for, but not limited to, use in joint and localized (spot) pavement repairs; and paving mats intended for curb-to-curb coverage to provide a moisture barrier for the pavement structure and retard reflective cracking in bituminous overlays. They are typically nonwoven in construction. This is a material purchasing specification, and design review of use is recommended.1.2 This is not a construction or design specification. This specification is based on hybrid geosynthetic paving mat survivability from installation stresses.1.3 For purposes of determining conformance to this specification, values for length or area shall be rounded to the nearest 0.1 m or 0.1 m2, respectively. Values for mass shall be rounded to the nearest gram, and for force to the nearest Newton, and volume to the nearest 0.01 L, in accordance with the rounding method in Practice E29.1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables) shall not be considered as requirements of the standard.1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 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 元 加购物车

This specification covers polyetherketoneetherketoneketone (PEKEKK) resins in virgin forms as supplied by a vendor, such as flakes, pellets, blocks, and so forth. It provides requirements and associated test methods for these thermoplastics when they are to be used in the manufacturing of intracorporeal devices, such as surgical implants or components of surgical or dental devices. The properties of fabricated forms of these resins should be evaluated using test methods that are appropriate to assure safety and efficacy. PEKEKK resins in the scope of this specification are pure semicrystalline homopolymers consisting of phenylene rings connected by either (E) and carbonyl (or ketone, K) groups along the polymer chain.1.1 This specification covers polyetherketoneetherketoneketone (PEKEKK) resins in virgin forms as supplied by a vendor, such as flakes, pellets, blocks, etc. It provides requirements and associated test methods for these thermoplastics when they are to be used in the manufacturing of intracorporeal devices, such as surgical implants or components of surgical or dental devices.1.2 As with any material, some characteristics may be altered by the processing techniques, such as molding, extrusion, machining, assembly, sterilization, etc. required for the production of a specific part or device; therefore, properties of fabricated forms of these resins should be evaluated using test methods that are appropriate to assure safety and efficacy as agreed upon by the vendor, purchaser, and regulating bodies.1.3 The properties included in this specification are those applicable for PEKEKK resins only. Fabricated forms, material or forms containing colorants, fillers, processing aids, or other additives, as well as polymer blends tht contain PEKEKK, are not covered by this specification.1.4 This specification is designed to recommend physical, chemical, and biological test methods to establish a reasonable level of confidence concerning the performance of virgin PEKEKK resins for use in medical devices. The properties listed should be considered in selecting material according to the specific end-use requirement.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 and health practices and determine the applicability of regulatory limitations prior to use.

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NOTE 1: This guide is consistent with NACE Standard RP0497.3.1 Observations and data derived from corrosion testing are used to determine the average rate of corrosion or other types of attack, or both (see Terminology G15), that occur during the exposure interval. The data may be used as part of an evaluation of candidate materials of construction for use in similar service or for replacement materials in existing facilities.3.2 The data developed from in-plant tests may also be used as guide lines to the behavior of existing plant materials for the purpose of scheduling maintenance and repairs.3.3 Corrosion rate data derived from a single exposure generally do not provide information on corrosion rate change versus time. Corrosion rates may increase, decrease, or remain constant, depending on the nature of the corrosion products and the effects of incubation time required at the onset of pitting or crevice corrosion.1.1 This guide covers procedures for conducting corrosion tests in plant equipment or systems under operating conditions to evaluate the corrosion resistance of engineering materials. It does not cover electrochemical methods for determining corrosion rates.1.1.1 While intended primarily for immersion tests, general guidelines provided can be applicable for exposure of test specimens in plant atmospheres, provided that placement and orientation of the test specimens is non-restrictive to air circulation.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are 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 and health practices and determine the applicability of regulatory limitations prior to use. See also 10.4.2.

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1.1 These test methods cover procedures for determining the gross camber of ceramic substrates in a free (nonclamped) state and for appraising the quality of a substrate lot by relating the deviation from flatness of faces due to curvature. 1.2 These test methods are applicable to substrates of sizes ranging up to 4 in. (102 mm) in the maximum dimension. 1.3 In principle, these test methods may be applied to larger dimensioned substrates. 1.4 The values stated in inch-pound units are to be regarded as 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 and health practices and determine the applicability of regulatory limitations prior to use.

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1.1 This classification system covers the properties of vulcanized rubber materials (natural rubber, reclaimed rubber, synthetic rubbers, alone or in combination) that are intended for, but not limited to, use in rubber products for automotive applications.NOTE 1: This classification system may serve many of the needs of other industries in much the same manner as SAE numbered steels. It must be remembered, however, that this system is subject to revision when required by automotive needs. It is recommended that the latest revision always be used.1.2 This classification system is based on the premise that the properties of all rubber products can be arranged into characteristic material designations. These designations are determined by types, based on resistance to heat aging, and classes, based on resistance to swelling in oil. Basic levels are thus established which, together with values describing additional requirements, permit complete description of the quality of all elastomeric materials.1.3 In all cases where the provisions of this classification system would conflict with those of the detailed specifications for a particular product, the latter shall take precedence.NOTE 2: When the rubber product is to be used for purposes where the requirements are too specific to be completely prescribed by this classification system, it is necessary for the purchaser to consult the supplier in advance, to establish the appropriate properties, test methods, and specification test limits.1.4 The values stated in SI units are to be regarded as standard.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： 918元 / 折扣价： 781 元 加购物车