描述
For more than 10 years, Hoau has been a leading supplier of rare metals such as tantalum, niobium and its alloys. Relying on China’s abundant non-ferrous metal mine resources, we use exquisite metal processing technology to meet the needs of customers in the fields of chemical industry, optoelectronics, aviation and other fields for non-ferrous metal materials.
| Niobium & Niobium Alloy Bar & Bar Chemical Composition (wt%≤) | ||||
| element | Niobium R04200 | Niobium R04210 | Nb-1% Zirconium R04251 | Nb-1% Zirconium R04261 |
| C | 0.01 | 0.01 | 0.01 | 0.01 |
| N | 0.01 | 0.01 | 0.01 | 0.01 |
| O | 0.015 | 0.025 | 0.015 | 0.025 |
| H | 0.0015 | 0.0015 | 0.0015 | 0.0015 |
| zirconium | 0.02 | 0.02 | 0.8 to 1.2 | 0.8 to 1.2 |
| Cyanide | 0.1 | 0.3 | 0.1 | 0.5 |
| iron | 0.005 | 0.01 | 0.005 | 0.01 |
| S | 0.005 | 0.005 | 0.005 | 0.005 |
| W | 0.03 | 0.05 | 0.03 | 0.05 |
| nickel | 0.005 | 0.005 | 0.005 | 0.005 |
| mo | 0.010 | 0.020 | 0.010 | 0.050 |
| high frequency | 0.02 | 0.02 | 0.02 | 0.02 |
| titanium | 0.02 | 0.03 | 0.02 | 0.03 |
| B | 2ppm | – | 2ppm | – |
| aluminium | 0.002 | 0.005 | 0.002 | 0.005 |
| be | 0.005 | – | 0.005 | – |
| chromium | 0.002 | – | 0.002 | – |
| C | 0.002 | – | 0.002 | – |
| Mechanical properties of niobium and niobium alloy rods and rods | |||
| grade | Ultimate Tensile Strength, Min, psi(MPa) | Yield Strength, psi(MPa) | Elongation min., mm |
| Types 1 and 2 | 18 000 (125) | 10 500 (73) | 20 |
| Types 3 and 4 | 28 000 (195) | 18 000 (125) | 15 |
| Diameter inch (mm) | Tolerance +/- inch (mm) |
| 0.030 ~ 0.060 （0.76 ~ 1.52） | 0.01 (0.025) |
| 0.060 ~ 0.090 （1.52 ~ 2.29） | 0.015 (0.038) |
| 0.090 ~ 0.125 （2.29 ~ 3.18） | 0.02 (0.051) |
| 0.125 ~ 0.187 （3.18 ~ 4.75） | 0.003 (0.076) |
| 0.187 ~ 0.375 （4.75 ~ 9.53） | 0.004 (0.102) |
| 0.375 ~ 0.500 （9.53 ~ 12.7） | 0.005 (0.127) |
| The tolerances can be adjusted according to the customer’s requirements. | |
Niobium rod and niobium rod application
Niobium and niobium alloy bars are used as structural materials for aircraft engines and rocket nozzles, internal components of reactors, coating materials, and various parts resistant to nitric, hydrochloric or sulfuric acid.
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