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Tungsten Alloy THA Standard

Heavy alloy is the generic name for tungsten-based, high-density alloy and contains nickel, copper and iron as additives for homogeneous sintering. The tungsten alloy THA Standard is classified according to composition, or tungsten content,and the sorts of additive. The alloy is widely used as the key material for nuclear devices because it excels in mechanical properties, radiation-shielding properties and thermal resistance. Unlike pure tungsten material, heavy alloy is easily machined and precision finished by turning, milling, boring, threading and grinding.

Material property of THA

properties

THA-17

THA-17N

THA-175

THA-175N

THA-175W

Composition(%)

90WNIFECU 

90WNICU

92.5WFeNiCu

92.5 WNiCu

95WMoNiFe

Density(gm/cc)

17.0

17.0

17.5

17.5

17.5

Magnetic Permeability

(Mu)

>7.0

1.03

7.0

1.03

3.0

Modulus of Elasticity

(GPa)

276

276

310

310

310

Tensile Strength(MPa)

827

758

827

758

862

Yield Strength(MPa)

586

620

620

586

620

Elongation(%)

10

6

12

6

8

Hardness(HRC)

26

25

27

26

30

properties

THA-18

THA-18N

THA-185

 

 

Composition(%)

90WNIFECU 

90WNICU

92.5WFeNiCu

 

 

Density(gm/cc)

18.0

18.0

18.5

 

 

Magnetic Permeability

(Mu)

5.0

1.03

3.0

 

 

Modulus of Elasticity

(GPa)

345

345

365

 

 

Tensile Strength(MPa)

827

758

793

 

 

Yield Strength(MPa)

620

586

586

 

 

Elongation(%)

8

5

6

 

 

Hardness(HRC)

28

27

30

 

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