FORGED TUNGSTEN MOLYBDENUM

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Ta10W tantalum tungsten alloy rod

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  1. SUMMSTY OF TANTALUM TUNGSTEN ALLOY . Tantalum alloy was developed for elevated temperature uses and has multiple applications in the high temperature aerospace field. These uses include nozzles, inserts, directional devices and structural materials. Tantalum-10% tungsten has a combination of low temperature ductility and fabricability in both the recrystallized and the wrought condition and is a weldable alloy. Through the historical use of tantalum-10% tungsten and its varied fabri...


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1. SUMMSTY OF TANTALUM TUNGSTEN ALLOY .

Tantalum alloy was developed for elevated temperature uses and has multiple applications in the high temperature aerospace field. These uses include nozzles, inserts, directional devices and structural materials. Tantalum-10% tungsten has a combination of low temperature ductility and fabricability in both the recrystallized and the wrought condition and is a weldable alloy. Through the historical use of tantalum-10% tungsten and its varied fabrication techniques, sufficient data has been generated to insure confidence, allow relatively inexpensive processing and restrictive part applications. This alloy has excellent corrosion resistance in many media and is available in all commercial mill product forms, machined net-shaped components and assemblies are also available. The data presented here reflects a collection of previously published data on tantalum-10% tungsten.

2. TYPICAL COMPOSITION (WT.%)

Tungsten: 9-11%

Tantalum & Impurities: Balance

Table 1. Maximum Impurities, ppm
Grade I
Aluminum <40
Cadmium <10
Cobalt <20
Columbium <500
Chromium <40
Copper <50
Magnesium <40
Manganese <40
Molybdenum <200
Nickel <40
Lead <40
Silicon <50
Tin <40
Titanium <100
Vanadium <40
Carbon <50
Hydrogen <10
Nitrogen <50
Oxygen <150

 

3. PHYSICAL PROPERTIES

Table 2. Physical Properties
Density 0. 608 lbs/in3, 16. 9 gms/cm3
Melting Point 5495°F, 3035ºC
Recrystallization Temerature One hour at 2400–2800°F
Thermal Expansion See Table 6, Page 5 and Figure 3, Page 6
Thermal Conductivity See Table 7, Page 7
Hardness Ingot Hardness BHN 185-210 (3000 kg. load)

 

4. MECHANICAL PROPERTIES

Table 3. Nominal Tensile Properties – Recrystallized Sheet, .040” to .045” Thick
Temp. 0F Uts-psi YTS-PSI %Elongation in 1 inch
R. T. 80000-95000 70000-89000 20-40
2600 36200-37100 22300-28300 30-36
3000 15000-16000 10500-12300 35-50
3500 9600-10000 9400 50-64

 

Table 4. Nominal Tensile Properties – Recrystallized Sheet, .040” to .045” Thick
Temp. 0F Uts-psi YTS-PSI %Elongation in 1 inch
2000 60700 55100 11
400 39500 34700 19
Material stress relieverd for 3 hours at 22500F. Test at .05in/in/min

Figure 1. Tensile Properties of Tantalum-10% Tungsten


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