AMS 4902 Titanium Sheet, Strip, And Plate
1. Grade: UNS R50540/Grade 1
2. Thickness: ≤25.4mm
3. Tensile Strength: 276MPa min.
Description
AMS 4902 Titanium Sheet, Strip, and Plate Commercially-Pure Annealed 40.0 ksi (276 MPa) Yield Strength
1. SCOPE
1.1 Form
This specification covers one grade of commercially pure titanium in the form of a sheet, strip, and plate.
1.2 Application
This material typically has been used for parts requiring aqueous corrosion resistance, moderate strength up to 400 °F (204 °C), and oxidation resistance up to 600 °F (316 °C), but usage is not limited to such applications.
3.1 Composition
Shall conform to the percentages by weight shown in Table 1; carbon shall be determined in accordance with ASTM E1941, hydrogen in accordance with ASTM E1447, oxygen and nitrogen in accordance with ASTM E1409, and other elements in accordance with ASTM E2371. Other analytical methods may be used if acceptable to the purchaser.
3.1.1 Determination not required for routine acceptance.
3.1.2 Check Analysis
Composition variations shall meet the applicable requirements of AMS 2249.
3.2 Melting Practice
3.2.1 Alloy shall be produced by electron beam cold hearth or plasma arc cold hearth melting method or shall be
multiple melted with the final melting cycle under vacuum. When multiple melted, the first melt shall be made
using a vacuum consumable electrode, non-consumable electrode, electron beam cold hearth, or plasma arc cold hearth melting practice. The final melting shall be made under vacuum using vacuum arc remelting (VAR) with no alloy additions permitted.
3.2.1.1 The atmosphere for non-consumable electrode melting shall be vacuum or shall be argon and/or helium at an absolute pressure not higher than 1000 mm of mercury.
3.2.1.2 The electrode tip for non-consumable electrode melting shall be water-cooled copper.
3.3 Condition
The product shall be supplied under the following conditions:
3.3.1 Sheet and Strip
Hot rolled with or without subsequent cold reduction, annealed, descaled, and leveled, having a surface appearance comparable to commercial corrosion-resistant steel No. 2D finish (See 8.2).
3.3.2 Plate
Hot rolled, annealed, descaled, and flattened, having a surface appearance comparable to commercial corrosion-
resistant steel No. 1 finish (see 8.2).
3.4 Annealing
The product shall be annealed by heating to a temperature within the range of 1200 to 1500 °F (649 to 816 °C), holding at the selected temperature for a time commensurate with the thickness and the heating equipment and procedure used, and cooling at a rate which will produce a product meeting the requirements of 3.5. Pyrometry shall be in accordance with AMS 2750. Furnace uniformity shall be ± 25 °F (±14 °C).
3.5 Properties
The product shall conform to the following requirements:
3.5.1 Tensile Properties
Shall be as shown in Table 2 on product 1.000 inches (25.40 mm) and under in nominal thickness, determined in
accordance with ASTM E 8 with the rate of strain maintained at 0.003 to 0.007 inch/inch/minute (0.003 to 0.007
mm/mm/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/mm/minute) through the yield strength and a minimum crosshead speed of 0.10 inch (2.5 mm) per minute above the yield strength.
3.5.1.1 Elongation requirement applies only to product 0.025 inches (0.64 mm) and over in nominal thickness.
3.5.2 Bending
Product under 0.1875 inch (4.76 mm) in nominal thickness shall withstand, without evidence of cracking when examined at 20X magnification, bending in accordance with ASTM E 290 through an angle of 105 degrees around a diameter equal to the bend factor shown in Table 3 times the nominal thickness of the product with the axis of bend parallel to the direction of rolling. In case of dispute, results of bend tests using the end-supported guided bend test procedure shall govern.
| Packing & Shipping |
1. Accept the request/customized packing | |
2. Normally, goods will packed in poly bags, drawstring bags, carrying bags, and cartons | |
3. For the sample, we will use TNT, Fedex, UPS, DHL, etc to ship it, | |
4. For bulk, it depends on the qty, by air, by train or by sea are all available. |
