Niobium rod
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Description
1. Introduction to niobium rods
- Grade number: R04200, R04210
- Purity: ≥99.95%, 99.99%
- Standard: ASTM B392
- Size: 3.0~95mm*L
- Status: hard, semi-hard, soft
2. Application fields of niobium rods
Used to produce niobium wire. Used to produce niobium processing parts. Internal structural parts of high-temperature furnace. Accessories in corrosion-resistant chemical equipment.
3. Chemical composition of niobium rods
| Chemical Constituents (%) | ||||||||||||
| Brand number | Main elements | Impurity content (≤) | ||||||||||
| Nb | Fe | And | In | W | Mo | Of | Facing | O | C | H | N | |
| Nb1 | Bal | 0.004 | 0.004 | 0.002 | 0.005 | 0.005 | 0.002 | 0.05 | 0.012 | 0.0035 | 0.0012 | 0.003 |
| Nb2 | Bal | 0.01 | 0.01 | 0.005 | 0.02 | 0.01 | 0.004 | 0.07 | 0.015 | 0.0050 | 0.0015 | 0.008 |
4. Mechanical properties of niobium rods
| Brand number | Minimum tensile strength (MPa) | Minimum yield strength (MPa)
(0.2% residual deformation) |
Minimum elongation (%)
(25.4mm metering) |
| R04200，R04210
Nb1，Nb2 |
125 | 85 | 25 |
V. Niobium rod tolerance (mm )
| diameter | Diameter tolerance | Length tolerance |
| 3～4.5 | 0.05 | ±2 |
| 4.5～6.5 | 0.05 | ±2 |
| 6.5～10.0 | 0.10 | ±2 |
| 10.0～16.0 | 0.15 | ±2 |
| 16.0～18.0 | 0.15 | ±2 |
| 18.0～25.0 | 0.30 | ±2 |
| 25.0～40.0 | 0.50 | ±2 |
| 40.0～50.0 | 0.60 | ±2 |
| 50.0～65.0 | 0.70 | ±2 |
| 65.0～95.0 | 1.00 | ±2 |
