From blending of the powder to forming, materials testing, mix, sintering, vacuum, inspecting and shipping the finished product - it all comes from our plant in Xi'an, China. For about 25 years, Kefeng has been producing tungsten products for a variety of versatile applications. We produced many sizes cube, such as 1.94mm, 3.085mm, 3.85mm, 4.5mm cube, 5.55mm, 6.2mm,6.2mm, crush test 50%min, density 17.6g/cm3, UTS: 850Mpa, YS: 680Mpa, EL:15% Min, these properties are higher than ASTM B777 standard.
Below is our production steps:


At Xi'an Kefeng Powder Metallurg Co., we manufacture a wide range of tungsten products which includes powder, rod, sheet, blank, tube, block, wire and more. Specific to tungsten cubes, we manufacture finished products that are either: cubed, rounded cubes. Elmet manufactures the following common sizes of cubes of ASTM B777:
Product Size (mm) WNiFe | Unit Weight (gr.) | Class |
4.85x4.85x4.85 | 2.0 | 2 |
4.84x4.84x4.84 | 2.0 | 2 |
5.55x5.55x5.55 | 3.0 | 2 |
6.1x6.1x6.1 | 4.0 | 2 |
3.1x3.1x3.1 | 0.5 | 2 |
2.45x2.45x2.45 | 0.25 | 2 |
3.85x3.85x3.85 | 1.0 | 2 |
Product Size (mm) WNiFe | Unit Weight (gr.) | Class |
4.5x4.5x4.5 | 1.6 | 2 |
1.94x1.94x1.94 | 0.128 | 2 |

Technical parameters




