4. Widely used in manufacturing various kinds of alloy steel, high-temperature alloy, optical glass, cutting tool, electronics, superconducting materials, and other industries.
We can supply seamless or welding niobium rods with good quality. Below are most of the standard sizes. If you do not find the niobium rod's required size, please feel free to contact us.
Sizes/Tolerance(mm.max)
| Diameter | Diameter Tolerance | Length | Tolerance | ||
|---|---|---|---|---|---|
| Rotary Forging Bar | Pull Rod | Car Rod | |||
| 2.0-4.0 | - | ±0.5 | - | 500-3000 | ±0.2 |
| ≥4.0-8.0 | ±0.06 | - | - | 50-3000 | ±0.2 |
| ≥8.0-12.0 | ±0.08 | - | - | 50-3000 | ±0.2 |
| ≥12.0-36 | ±0.1 | - | - | 50-1600 | ±0.2 |
| ≥36-50 | - | - | ±0.5 | 50-1400 | ±0.2 |
| ≥50-65 | - | - | ±0.5 | 50-1400 | ±0.2 |
Special requirements to be agreed upon by the supplier and buyer
| Grade | Chemical Composition, Max | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fe | Si | Mo | W | Ti | Cr | Ta | Ni | O | C | H | N | Nb | |
| Nb1 | 0.005 | 0.005 | 0.010 | 0.001 | 0.002 | 0.002 | 0.1 | 0.005 | 0.015 | 0.010 | 0.001 | 0.010 | Balance |
| Nb2 | 0.010 | 0.005 | 0.010 | 0.020 | 0.005 | 0.005 | 0.250 | 0.005 | 0.025 | 0.030 | 0.005 | 0.025 | Balance |
| Grade | Tensile Strength δbpsi (MPa) ≥ | Yield Strength δ0.2, psi (MPa) ≥ | Elongation in 1″/2″ Gage Length, ％, ≥ | |
|---|---|---|---|---|
| >=0.010 | <0.010 | |||
| RO4200-1 | 18000 (125) | 12000 (85) | 25 | 20 |
| RO4210-2 | ||||