Tungsten Heavy Alloy

Tungsten heavy alloys are made of tungsten-based with two-phase composites of NiFe or Cu as an addition to form a ductile matrix. Tungsten heavy alloys have good machining properties, excellent radiation resistance, lower expansion coefficient, high strength and modulus of elasticity which make it extensively used in military equipment, balance weights for submarine and vehicles, aircraft components, nuclear and medical shields, fishing and sport tackles.
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Stanford Advanced Materials (SAM) supplies a wide range of tungsten heavy alloys, including Tungsten Nickel Iron Alloy (W-Ni-Fe Alloy), Tungsten Nickel Copper Alloy (W-Ni-Cu Alloy), Tungsten Bucking Bar (W Bucking Bar), Tungsten Alloy Counterweight Parts, Tungsten Alloy Crankshaft Weight, Tungsten Penetrator (W Penetrator).

Stanford advanced materials (SAM) can provide various big-size tungsten heavy alloy parts by CIP, various small parts by mold pressing, extruding or MIM, various high-strength plates, bars, and shafts by forging, rolling, or hot extruding. Our products have high density and could be a reliable shielding material.

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Tungsten Heavy Alloy

Description & Application of Tungsten Heavy Alloy

Tungsten heavy alloys are made of tungsten-based with two-phase composites of NiFe or Cu as an addition to form a ductile matrix. Tungsten heavy alloys have good machining properties, excellent radiation resistance, lower expansion coefficient, high strength and modulus of elasticity which make it extensively used in military equipment, balance weights for submarine and vehicles, aircraft components, nuclear and medical shields, fishing and sport tackles.

Tungsten Alloy (aka Mallory 1000, Densalloy, Fansteel 77, Densimet)

Tungsten Alloys

EFI Grade EF17 EF175 EF18 EF185
ASTM B 777-07 1 2 3 4
Nominal % Tungsten 90 92.5 95 97
Nominal Density GM/CC 17 17.5 18 18.5
Minimum* Ultimate Tensile Strength UTS (KSI) 110 110 105 100
Minimum* Elongation % 5 5 3 2
Modulus of Elasticity (KSI) 45,000 48,000 50,000 52,000
*Note: non-magnetic compositions (N) conforming to EF17, EF175 and EF18 shall have minimum properties of 94 KSI minimum ultimate tensile strength. Minimum elongation shall be 2 percent on EF17 and EF175, and 1 percent on EF18.

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