For welding – zirconium and zirconium alloy wire
Brand：ERZr2
ERZr4
Size：Φ（0.5-6）✕ Lmm
Shape：Straight wire；Wire rod
Standard: AWS A5.24/A5.24M:2005
ASME SFA-5.24/SFA-5.24M
Chemical composition%
| AWS category | Brand | Zr+Hf | Hf(max) | Fe+Cr(max) | O | H(max) | N(max) | C(max) | Nb |
| ERZr2 | R60702 | ≥99.0 | 4.5 | 0.2 | 0.11-0.15 | 0.005 | 0.015 | 0.03 | / |
| ERZr4 | R60705 | ≥95.5 | 4.5 | 0.2 | 0.11-0.16 | 0.005 | 0.015 | 0.03 | 2.0-3.0 |
Zirconium wire for plasma cutting or evaporation
Brand：R60702
Size：Φ（0.5-6）✕ Lmm
Shape：Particle；Wire rod
Standard: ASTM B550/B550M-07(2012)
GB/T 8769-2010
Chemical composition%
| Brand | Zr+Hf | Hf（max） | Fe+Cr（max） | O(max） | H(max） | N(max） | C(max） |
| R60702 | ≥99.2 | 4.5 | 0.2 | 0.16 | 0.005 | 0.025 | 0.05 |
1. The corrosion rate of industrial pure zirconium in all boiling concentrations of hydrochloric acid is less than 0.025mm/a.
Table 1 comparison of corrosion rates of zirconium and other metallic materials in 20% hydrochloric acid
| material | The experimental time/h | Corrosion rate |
| zirconium | 28 | 0.018 |
| 304 | 0.5 | ＞8890 |
| 316 | 0.5 | 1145 |
| B-2 | 28 | 0.43 |
| C-276 | 28 | 0.9 |
2. Zirconium has excellent corrosion resistance in sulfuric acid with a concentration of less than 70%.In addition, because stainless steel and nickel alloy can not be used in high temperature, 20% sulfuric acid and 40-60% of the boiling temperature of sulfuric acid range, zirconium in sulfuric acid environment has an irreplaceable role.
Table 2 comparison of corrosion rates between zirconium and stainless steel and nickel alloys
| H₂SO₄Percent content | centigrade temperature | corrosion rate(mm/a) | ||||
| Zr | 304 | 316 | B-2 | C-276 | ||
| 10 | 102 | 0.0025 | 52 | 14.2 | 0.025 | 0.018 |
| 30 | 108 | 0.0025 | ＞127 | ＞127 | 0.053 | 1.4 |
| 55 | 132 | 0.0025 | ＞104 | ＞104 | 0.048 | 7.5 |
| 55 | 168 | 0.5 | / | / | 0.94 | 54 |
| 2 | 225 | 0 | / | / | 0.38 | 1 |
| 5 | 232 | 0.0025 | / | / | 2.8 | 3.9 |
| 10 | 225 | 0.018 | / | / | 26 | 16.8 |
| 15 | 225 | 0.06 | / | / | / | / |
3.below 200℃, not more than 90% of nitric acid, zirconium has good corrosion resistance.
4.Zirconium is more resistant to corrosion in all concentrations, even boiling caustic solutions, than tantalum, niobium, and titanium
Crystallization of hafnium
Crystalline hafnium is a high purity hafnium produced by iodization
Purity Hf+Zr≥99.99%, diameter 20-40mm.The length can be cut according to customer’s request
| Chemical composition | ||||||||
| Element | Fe | Cr | Mo | Al | Ti | Mn | Ni | U |
| Max(ppm) | 100 | 5 | 10 | 5 | 10 | 5 | 12 | 1 |
| Element | Cu | Sn | Sb | W | Pb | Bi | Mg | P |
| Max(ppm) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Element | Si | S | Nb | B | Cd | Be | Ca | Li |
| Max(ppm) | 10 | 5 | 5 | 5 | 1 | 5 | 5 | 5 |
| Element | Zn | Na | V | K | N | C | H | O |
| Max(ppm) | 5 | 5 | 5 | 5 | 50 | 50 | 20 | 100 |
| Element | Zr | |||||||
| Max(ppm) | Zr≤0.2% or Zr≤0.3% or Zr≤0.5% | |||||||