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Tungsten Heavy Alloy

Traditional tungsten based high density alloys include two categories: W-Ni Fe and W-Ni Co. It is a tungsten based high density alloy with tungsten as the matrix and adjustable density by adding a small amount of Ni, Fe, and Co elements.
Tungsten based high density alloys have the ability to absorb high-energy rays, while also possessing characteristics such as low coefficient of thermal expansion, good plasticity, high strength and elastic modulus, processability, and weldability

1、Overview of Material Specifications

Grade	Component content(wt%)		Density g·cm-3	Magnetism	Standard level (ASTM-B-777)
Grade	W	Ni、Fe/Cu	Density g·cm-3	Magnetism	Standard level (ASTM-B-777)
GWF90	90	margin（Ni、Fe）	16.85-17.30	weak	Class 1
GWF93	93	margin（Ni、Fe）	17.15-17.85	weak	Class 2
GWF95	95	margin（Ni、Fe）	17.75-18.35	weak	Class 3
GWF97	97	margin（Ni、Fe）	18.25-18.85	weak	Class 4
GWC90	90	margin（Ni、Fe）	16.85-17.30	nothing	Class 1
GWC93	93	margin（Ni、Fe）	17.15-17.85	nothing	Class 2
GWC95	95	margin（Ni、Fe）	17.75-18.35	nothing	Class 3

高比重-钨镍铁.jpg

2、Overview of material properties

Grade	Tensile strength MPa	Yield strength MPa	Elongation rate	Hardness (HRC/Max)	Minimum reference standard (ASTM-B-777)
Grade	Tensile strength MPa	Yield strength MPa	Elongation rate	Hardness (HRC/Max)	Minimum reference standard (ASTM-B-777)
GWF90	≥758	≥517	≥5%	32	Class 1
GWF93	≥758	≥517	≥5%	33	Class 2
GWF95	≥724	≥517	≥3%	34	Class 3
GWF97	≥689	≥517	≥2%	35	Class 4
GWC90	≥648	≥517	≥2%	32	Class 1
GWC93	≥648	≥517	≥2%	33	Class 2
GWC95	≥648	≥517	≥1%	34	Class 3

3、Production process

高比重合金制作工艺.png

4、Advantage

Tungsten based high density alloys have many excellent properties, with a density of up to 18.8 g/cm ³, sintered tensile strength of 700-1000 MPa,

and deformed tensile strength of 1000-1700 MPa; At the same thickness, the ability to shield radiation is 1.7 times that of lead;

The thermal conductivity is 5 times that of mold steel; The coefficient of thermal expansion is 4-6 × 10-6/K, which is only 1/2-1/3 of that of iron or steel.

Tungsten based high density alloys have high density (~18.8 g/cm ³) and excellent X-ray and gamma ray shielding capabilities,

4.1. As a shielding component, it is widely used in high-end medical, industrial radiographic testing and other fields;

4.2. Widely used in important fields such as aerospace, automotive, and nuclear industry.

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