Manufacturer of Tungsten Rod Manufacture
We emphasize growth and introduce new goods into the market every year for Manufacturer of Tungsten Rod Manufacture, We welcome new and outdated consumers from all walks of existence to speak to us for long run enterprise relationships and acquiring mutual success!
We emphasize growth and introduce new goods into the market every year for Low Tungsten Alloy Rod, Solid Metal Rod, Tungsten Rods At, Our items are widely recognized and trusted by users and can meet continuously changing economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
Chemical composition:
| Main and minor components | Min.content(%) | ASTM B760 |
| W | 99.95 | balance |
| 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 |
| O | 20 | 100 |
| Cd | 5 | - |
| Hg | 1 | - |
| Pb | 5 | - |
Diameter and tolerances:
| Diameter (mm) | Tolerance | |||
| Straightened | Forged | Turned | Ground | |
| 0.50-0.99 | - | - | ±0.007 | |
| 1.00-1.99 | - | - | ±0.010 | |
| 2.00-2.99 | ±2.0 % | - | ±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 |
| 40.0-49.9 | - | ±0.40 | ±0.30 | ±0.20 |
| 50.0-90.0 | - | ±1.00 | ±0.40 | - |
Length and straightness:
| Diameter (mm) | Production length (mm) | Stiraightness/Meter (mm) | |
| Cleaned | Ground/turned | ||
| 0.50-10.0 | ≥500 | ＜2.5 | ＜2.5 |
| 10.1-50.0 | ≥300 | ＜2.0 | ＜1.5 |
| 50.1-90.0 | ≥100 | ＜2.0 | ＜1.5 |
Length tolerance:
| Diameter 0.50-30.0 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: ≥19.1g/cm³
Nondestructive testing: For diameters＞15.00 mm:100% ultrasonic testing. For diameters of 0.50-50.0mm:Eddy curent tests on rods with ground surface.
| Diameter(mm) | Hardness (HV 10) |
| 0.50-2.99 | — |
| 3.00-9.99 | 420-500 |
| 10.0-29.9 | 420-480 |
| 30.0-49.9 | 380-460 |
| ≥50 | ＞350 |
Surface condition:
| Diameter (mm) | Surface condition |
| 0.50-90.0 | Chemical cleaned |
| ≥40.0 | Turned Ra ≤3.2μm |
| 0.50-30 | Centerless ground Ra≤1.0μm |
| ≥40.0 | - Centerless ground Ra≤1.2μm |
