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ASTM B817-2008 粉末冶金(P/M)钛合金结构元件的标准规范

ASTM B817-2008 粉末冶金(P/M)钛合金结构元件的标准规范

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【英文标准名称】: Standard Specification for Powder Metallurgy (P/M) Titanium Alloy Structural Components
【原文标准名称】: 粉末冶金(P/M)钛合金结构元件的标准规范
【标准号】: ASTM B817-2008
【标准状态】: 现行
【国别】: 美国
【发布日期】: 2008
【实施或试行日期】:
【发布单位】: 美国材料与试验协会(US-ASTM)
【起草单位】: B09.11
【标准类型】: (Specification)
【标准水平】: ()
【中文主题词】:
【英文主题词】: compaction; cold isostatic pressing (CIP); ELCL titanium; HDH titanium powder; hot isostatic pressing (HIP); powder metallurgy; x201C;sponge finesx201D; titanium powder; structural components; Ti-6
【摘要】: 1.1 This specification covers powder metallurgy (PM) structural components fabricated from commercially pure (CP) titanium powder mixed with master alloy powder and elemental powders in appropriate quantity to yield combined material chemical compositions comparable to ingot metallurgy (I/M) alloys Titanium 6A1-4V and Titanium 6A1-6V-2Sn. 1.2 This specification covers the following materials: 1.2.1 Two types depending on alloy composition as detailed in Table 1. 1.2.1.1 Type I is comparable to I/M Ti-6A1-4V. 1.2.1.2 Type II is comparable to I/M Ti-6A1-6V-2Sn. 1.2.2 Two grades of each type that result from the specific titanium powder used are as follows: 1.2.2.1 Grade 1 is made from sponge fines with residual levels of chlorine and sodium. 1.2.2.2 Grade 2 is made from hydride/dehydride (HDH) or other process titanium with significantly lower chlorine and sodium content. 1.2.3 Two classes as a function of density (see Table 2) are as follows: 1.2.3.1 Class A density ratio is 94 % minimum. 1.2.3.2 Class B density ratio is 99 % minimum. (Warning8212;CP titanium powder may be pyrophoric; its use may involve an explosion hazard.) 1.3 The values stated in inch-pound units are to be regarded as the standard. The SI units 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 1.2.3.2. TABLE 1 Chemical Composition Requirements Element Composition, Weight %A Grade 1Grade 2 Type I Type II Type I Type II Aluminum
5.50/6.75
5.0/6.0
5.50/6.75
5.0/6.0
Vanadium
3.50/4.50
5.0/6.0
3.50/4.50
5.0/6.0
Tin
N/AB
1.5/2.5
N/AB
1.5/2.5
Iron
0.40 max
0.35/1.0
0.40 max
0.35/1.0
Copper
N/AB
0.35/1.0
N/AB

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ASTM[1] B817-2[1]

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