SAE AMS 4971F pdf download

SAE AMS 4971F pdf download.Titanium Alloy,Bars, Wire,Forgings, and Rings 6Al – 6v – 2sn Annealed, Heat Treatable.
2.1 SAE Publications:
Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.
AMS 2241 Tolerances, Corrosion and Heat Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy ears and Wire
MAM 2241 Tolerances, Metric, Corrosion and Heat Resistant Steel. Iron Alloy. Titanium, and Titanium Alloy Bars and Wire
AMS 2368 Sampling and Testing of Wrought Titanium Raw Materials, Except Forgings and
Forging Stock
Pyrometry
Identification, Forgings
Identification, Titanium and Titanium Alloy Wrought Products
Rings, Flash Welded. Titanium and Titanium Alloys
ARP982 Minimizing Stress-Corrosion Cracking in Wrought Titanium Alloy Products
2.2 ASTM Publications:
Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or http:llwww,astm.org.
ASTM E 8
ASTM E 8M
ASTM E 120
ASTM E 1409
ASTM E 1447
Tension Testing of Metallic Materials
Tension Testing of Metallic Materials (Metric)
Chemical Analysis of Titanium and Titanium Alloys
Determination of Oxygen in Titanium and Titanium Alloys by the Inert Gas Fusion
Technique
Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion
Thermal Conductivity Method
3. TECHNICAL REQUIREMENTS:
3.1 Composition:
Shall conform to the percentages by weight shown in Table 1; oxygen shall be determined in accordance with ASTM E 1409, hydrogen in accordance with ASTM E 1447, and other elements by wet chemical methods in accordance with ASTM E 120. by spectroctiemical methods, or by other analytical methods acceptable to purchaser.
AMS 2750
AMS 2808
AMS 2809
AMS 7498
3.3.3.1 Flash welded rings shall not be supplied unless specified or permitted on purchaser’s part drawing. When supplied, rings shall be manufactured in accordance with AMS 7498.
3.3.4 Stock for Forging or Flash Welded Rings: As ordered by the forging or flash welded ring manufacturer.
3.4 Annealing:
Bars, wire, forgings. and flash welded rings shall be annealed by heating to 1300 °F ± 25
(704 °C ± 14), holding at heat for 2 hours ± 0.25, and cooling as required. Pyrometry shall be in
accordance with AMS 2750.
3.5 Properties:
The product shall conform to the following requirements:
3.5.1 Bars, Wire, Forgings, and Flash Welded Rings: The product shall have the following properties
after being soluton heat treated by heating to 1650 F ± 25(899 °C ± 14). holding at heat for
60 minutes ± 5, and quenching in agitated water and precipitation heat treated by heating to
1000 °F ± 15 (538 °C ± 8), holding at heat for 4 hours ± 0.25, and cooling in air. The precipitation
heat treatment temperature for fastener stock shall be not less than 1000 0F (538 C); the
temperature used shall be reported (See 4.5).
3.5.1.1 Tensile Properties: Shall be as specified in Table 2, determined in accordance with ASTM E 8 or ASTM E 8M with the rate of strain maintained at 0.003 to 0.007 inch/inch/minute (0.003 to 0.007 mmlmm/minute) through the yield strength and then increased so as to produce failure in approximately one additional minute. When a dispute occurs between purchaser and vendor over the yield strength values, a referee test shall be performed on a machine having a strain-rate pacer using a rate of 0.005 inch/inch/minute (0.005 mm/mmiminute) through the yield strength and a minimum cross head speed of 0.10 inch per minute (0.04 mm/s) above the yield strength.
3.5.1.1.1 Tensile property requirements apply in both the longitudinal and transverse directions. Transverse tensile properties of Table 2 apply only to product from which a test specimen not less than 2.50 inch (63.5 mm) in length can be obtained.
3.5.1.1.2 Longitudinal requirements in Table 2 apply to specimens from bars and wire taken with the axis of the specimen approximately parallel to the grain flow and to specimens from flash welded rings taken in the circumferential direction.
3.5.1.1.3 YIeld strength and reduction of area requirements in Table 2 do not apply to wire under
0.125 inch (3.18 mm) in nominal diameter.
3.5.1.2 Microstructure: Shall be that structure resulting from processing within the alpha-beta phase field. Microstructure shall conform to 3.5.1.2.1 or 3.5.1.2.2 (See 8.3.1).
3.5.1.2.1 Equiaxed and/or elongated primary alpha in a transformed beta matrix with no continuous network of alpha at prior beta grain boundaries.