Best quality Purity Tungsten Dart Billet Wolfram Alloy Rod Block

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We thinks what buyers think, the urgency of urgency to act during the interests of a purchaser position of theory, allowing for much better high-quality, reduced processing costs, charges are more reasonable, won the new and outdated consumers the support and affirmation for Best quality Purity Tungsten Dart Billet Wolfram Alloy Rod Block, We sincerely welcome overseas buyers to refer to for your long-term cooperation and also the mutual development.We strongly think that we can do better and far better.
We thinks what buyers think, the urgency of urgency to act during the interests of a purchaser position of theory, allowing for much better high-quality, reduced processing costs, charges are more reasonable, won the new and outdated consumers the support and affirmation for 99.95% Polished Tungsten Rod Bar, Pure Tungsten Rod Suqare Bar, Tungsten Round Billets, In order to meet our market demands, we’ve paied more attention to the quality of our solutions and services. Now we can meet customers’ special requirements for special designs. We persistently develop our enterprise spirit “quality lives the enterprise, credit assures cooperation and keep the motto in our minds: customers first.
Chemical composition:

Main and minor components Min.content(%) ASTM B760
W balance balance
La 0.77-0.94%  
La2O3 0.90-1.10%  
Impurities Max.values (μg/g) Max.values (μg/g)
Al 15 -
Cu 10 -
Cr 20 -
Fe 30 100
K 10 -
Ni 20 100
Si 20 100
Mo 100 -
C 30 100
H 5 -
N 5 100
Cd 5 -
Hg 1 -
Pb 5 -

Diameter and tolerances:

Diameter (mm) Tolerance
  Forged Turned Ground
1.20-1.99 -   ±0.010
2.00-2.99 -   ±0.015
3.00-15.9 -   ±0.020
16.0-24.9 ±0.30   ±0.030
25.0-34.9 ±0.40   ±0.050
35.0-39.9 ±0.40 ±0.30 ±0.060
40.0-50.0 ±0.40 ±0.30 ±0.20
50.0-80.0 ±1.00 ±0.40 -

Length and straightness:

Diameter (mm) Production length (mm) Stiraightness/Meter (mm)
Cleaned Ground/turned
1.20-10.0 ≥500 <2.5 <2.5
10.1-50.0 ≥300 <2.0 <1.5
50.1-80.0 ≥100 <2.0 <1.5

Length tolerance:

Diameter 1.20-30.0 mm

Nominal length (mm) ≥15 15-120 120-400 400-1000 1000-2000 >2000
Length tolerance(mm) ±0.2 ±0.3 ±0.5 ±2.0 ±3.0 ±4.0

Diameter >30.0 mm

Nominal length (mm) ≥30 30-120 120-400 400-1000 1000-2000 >2000
Length tolerance(mm) ±0.5 ±0.8 ±1.2 ±4.0 ±6.0 ±8.0

Density: 

Diameter (mm) Density (g/cm³)
1.20-6.0 18.85
6.0-40.0 18.75
40.0-80.0 18.65

Nondestructive testing: For diameters>15.00 mm: 100% ultrasonic testing. For diameters of 1.2-50.0mm: Eddy curent tests fro ground products visual inspection.

Diameter(mm) Hardness(HV 30)
3.0-10.0 >420
10.0-30.0 >400
30.0-50.0 >380
≥50 >350

Surface condition:

Diameter (mm) Surface condition
≤2.50 ground Ra≤0.8μm
2.50-30.0 ground Ra≤1.0μm
30.0-50.0 ground Ra≤1.2μm
≥50.0 Turned Ra≤3.2μm

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