SAE AMS 4959D:2003 pdf download

SAE AMS 4959D:2003 pdf download Titanium Alloy Wire 13.5V – 11Cr – 3Al Spring Temper
\1. SCOPE:
1.1 Form:
This specification covers a titanium alloy in the form of cold drawn wire.
1.2 Application:
This wire has been used typically for springs requiring corrosion resistance and high tensile strength,but usage is not limited to such applications.
1.2.1 Certain processing procedures and service conditions may cause this wire to become subject to stress-corrosion cracking; ARP982 recommends practices to minimize such conditions.
1.3 Classification:
Wire shall be classified as follows:
Type 1 – Centerless ground
Type 2 – As drawn
1.3.1 Either Type 1 or Type 2 may be supplied unless a specific type is ordered.
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 cancelled 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 2241 Tolerances, Corrosion and Heat Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire
AMS 2249 Chemical Check Analysis Limits, Titanium and Titanium Alloys
AMS 2809 Identification, Titanium and Titanium Alloy Wrought Products
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 www.astm.org.
ASTM E 8 Tension Testing of Metallic Materials
ASTM E 8M Tension Testing of Metallic Materials (Metric)
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 1447 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 spectrochemical methods, or by other analytical methods acceptable to the purchaser.
3.1.1 Determination not required for routine acceptance.
3.1.2 When ASTM E 1447 is used, sample size may be as large as 0.35 gram.
3.1.3 Hydrogen shall be determined on the finished wire.
3.1.4 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2249.
3.2 Melting Practice:
Alloy shall be multiple melted. Melting cycle(s) prior to the final melting cycle shall be made using consumable electrode, nonconsumable electrode, electron beam, or plasma arc melting practice(s). The final melting cycle shall be made under vacuum using consumable electrode practice with no alloy additions permitted.