CHEMETAL USA is a leading producer of tungsten heavy alloy rods including tungsten nickel iron alloy (W-Ni-Fe) rod, tungsten nickel copper alloy (W-Ni-Cu) rod. We offer tungsten heavy alloy rods with diameters ranging from 0.029″ to 4.0” or more. Tungsten heavy alloy rod contains tungsten content ranging from 80%-98% with small amounts of molybdenum, nickel, iron and copper elements. We can cut tungsten rod into varying lengths depending on the diameter of the rod chosen by the customer. Two surfaces tungsten rods have are polished and ground.

Tungsten Alloy Rod Specification

Rod Diameter
Centerless Ground Rod 0.029″ (0.75mm) – 1.574″ (40 mm)
Ground Rod0.029″ (0.75mm) – 5″ (127 mm)
Rod LengthVarious lengths available upon the special diameter
SurfaceGround, Chemical Cleaned, Polished
StandardMil-T-21014,  AMS-T-21014, ASTM B 777
CompositionW Ni Fe, W Ni Cu, W Cu

CHEMETAL USA is capable of offering various types of Tungsten rod, Tungsten heavy alloy rod, Tungsten Nickel Iron Alloy (W-Ni-Fe) rod, Tungsten Nickel Copper Alloy (W-Ni-Cu) rod, Copper Tungsten (W-Cu) rod that all meet a consistently high standard of diameter tolerance, roundness, straightness. and machinability.

Tungsten Heavy Alloy Rod Diameter

FormSize InchSize InchSize InchSize InchSize Inch
Rod0.030.250.571.02
1.33
Rod0.05
0.26
0.581.031.5
Rod0.06
0.29
0.6
1.04
1.6
Rod0.07
0.3
0.68
1.06
1.9
Rod0.1
0.31
0.7
1.07
2
Rod0.11
0.34
0.71
1.08
2.1
Rod0.12
0.35
0.78
1.09
2.2
Rod0.14
0.36
0.87
1.22
2.9
Rod0.15
0.37
0.88
1.23
3
Rod0.16
0.4
0.89
1.25
3.3
Rod0.18
0.41
0.9
1.27
3.8
Rod0.19
0.52
0.91
1.28
4
Rod0.2
0.53
0.92
1.3
4.2
Rod0.21
0.54
1
1.31
4.4
Rod0.24
0.55
1.01
1.32
5
Rod Diameters are drawn on prior sales. Please contact us for additional availability.

CHEMETAL USA specializes in the manufacturing of tungsten heavy alloy rod. We understand that top-quality control is essential to produce products that satisfy our clients. Thus, we have placed a great deal of emphasis on monitoring every step from the beginning of the forging process to the end of the inspection. Hot Isostatic Pressing ensures our tungsten alloy rods obtain a high density and fine grain size. These two properties are critical to the components fabricated with the rods since it will help the components have a long service lifespan. The ground rod has no cracks, burrs and oxidation phenomenon on its surface. Our tungsten alloy rod is also heat treated and thoroughly checked with NDT in order to identify and eliminate the crack lines, pores and various other defects. Additionally, the forging process refines the grain structure and improves the rigidity.

Properties

  • Low thermal expansion
  • High Density
  • Radiation Absorption
  • High thermal and electrical conductivity
  • High arc resistance
  • Hardness and Wear Resistance

Applications

  • Contact and electrode materials
  • High temperature furnace component
  • Head sink
  • EDM electrode
  • Arc contact

 

Tungsten Heavy Alloy Standards

ASTM B 777Class 1Class 2Class 3Class 4
Tungsten Nominal %9092.59597
Density (g/cc)16.85-17.25
17.15-17.85
17.75-18.35
18.25-18.85
Hardeness (HRC)32333435
Utimate Tensile Strengthksi110110105100
Mpa758758724689
Yield Strength at 0.2% off-setksi75757575
Mpa517517517517
Elongation (%)5532

AMS-T-21014
Class 1
Class 1
Class 2
Class 2
Class 3
Class 3
Class 4
Composition90W7Ni3Fe
91W6Ni3Fe
92W5Ni3Fe
93W4Ni3Fe95W3Ni2Fe
96W3Ni1Fe
97W2Ni1Fe
Density (g/cm3)17.1±0.15
17.25±0.15
17.50±0.15
17.60±0.15
18.10±0.15
18.30±0.15
18.50±0.15
Heat TreatmentSinteringSinteringSinteringSinteringSinteringSinteringSintering
Tensile Strength (Mpa)900-1000
900-1000
900-1000
900-1000
920-1100
920-1100
920-1100
Elongation (%)18-29
17-27
16-26
16-24
10-22
8-20
6-13
Hardness (HRC)24-2825-2925-2926-3027-3228-34
28-36

Mil-T-21014Class1Class1Class 2
Class 3
Class 3
Class 4
Composition90%W,
6%Ni4%Cu
90%W,
7%Ni3%Fe
92.5%W,
5.25%Ni
2.25%Fe
95%W,
3.5%Ni
1.5% Cu
95%W,
3.5%Ni
1.5%Fe
97%W,
2.1%Ni
0.9%Fe
Density (gm/cc; lbs/in3)17;0.61417;0.614
17.5;0.632
18;0.65
18;0.65
18.5;0.668
Hardness (RC)242526
272728
Ultimate Tensile Strength (PSI)110,000
120,000
114,000
110,000
120,000
123,000
Yield Strength, . 2% Offset (PSI)80,000
88,000
84,000
85,000
90,000
85,000
Elongation (% In 1“)6107775
Proportional Elastic Limit (PSI)45,000
52,00046,000
45,000
44,00045,000
Magnetic ProperitiesNilSlightly
Magnetic
Slightly
Magnetic
NilSlightly
Magnetic
Slightly
Magnetic
ASTM-B-459-67
Grade1
Type Ⅱ && Ⅲ
Grade1
Type Ⅱ && Ⅲ
Grade2
Type Ⅱ && Ⅲ
Grade3
Type Ⅱ && Ⅲ
Grade3
Type Ⅱ && Ⅲ
Grade4
Type Ⅱ && Ⅲ
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