SAE AMS 4998C:2003 pdf download

SAE AMS 4998C:2003 pdf download Titanium Alloy Powder 6Al – 4V
1. SCOPE:
1.1 Form:
This specification covers a titanium alloy in the form of prealloyed powder.
1.2 Application:
This powder has been used typically for compaction into net or near net shapes and into forging stock in the form of billets or preforms, but usage is not limited to such applications.
1.3 Safety – Hazardous Materials: While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.
2. APPLICABLE DOCUMENTS: The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been canceled and no superseding document has been specified, the last published issue of that document shall apply.
2.1 SAE Publications:
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.
AMS 2249 Chemical Check Analysis Limits, Titanium and Titanium Alloys
2.2 ASTM Publications:
Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org.
ASTM B 214 Sieve Analysis of Metal Powders
ASTM B 215 Sampling Finished Lots of Metal Powders
ASTM B 311 Density Determination for Powder Metallurgy (P/M) Materials Containing Less than Two Percent Porosity
ASTM B 527 Determination of Tap Density of Metallic Powders and Compounds
ASTM E 120 Chemical Analysis of Titanium and Titanium Alloys
ASTM E 1409 Determination of Oxygen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique
ASTM E 1447 Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity Method
ASTM E 1742 Radiographic Examination
3. TECHNICAL REQUIREMENTS:
3.1 Composition: Shall conform to the percentages by weight shown in Table 1. Hydrogen shall be determined in accordance with ASTM E 1447, oxygen shall be determined in accordance with ASTM E 1409, and other elements in accordance with ASTM E 120, by spectrochemical methods, or by other analytical methods acceptable to purchaser. Oxygen shall be determined on the panels of 3.4.3.
3.1.1 Tin plus molybdenum plus copper plus manganese shall not exceed 0.20%.
3.1.2 Sample size may be as large as 0.35 gram.
3.1.3 Determination not required for routine acceptance.
3.1.4 Check Analysis: Composition variations shall meet the requirements of AMS 2249.
3.2 Powder Production: