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1.1 This specification covers powder metallurgy (P/M) structural components fabricated from commercially pure (CP) titanium powder mixed with master alloy powder and elemental powders in appropriate quantity to yield combined material chemistries 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.
18.104.22.168 Type I is comparable to I/M Ti-6A1-4V.
22.214.171.124 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:
126.96.36.199 Grade 1 is made from sponge fines with residual levels of chlorine and sodium.
188.8.131.52 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:
184.108.40.206 Class A density ratio is 94 % minimum.
220.127.116.11 Class B density ratio is 99 % minimum. (Warning—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 18.104.22.168.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B243 Terminology of Powder Metallurgy
B311 Test Method for Density of Powder Metallurgy (PM) Materials Containing Less Than Two Percent Porosity
B328 Test Method for Density, Oil Content, and Interconnected Porosity of Sintered Metal Structural Parts and Oil-Impregnated Bearings
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ICS Number Code 77.120.50 (Titanium and titanium alloys); 77.160 (Powder metallurgy)