| Material | Special Alloy Steel |
| Heat-treatment Method | Quenched and tempered + Induction Case Hardened |
| Suitable Application and Environment | Extreme Heavy Load, Non-corrosive Wells |
| Rod | Steel | Heat Treatment | Tensile Strength | Yield | Yield | Elongation | Reduction | Hardness | |
| ksi | Mpa | ksi | Mpa | 8″, % | % | RC | |||
| EH | 25CrMoA | Induction Case Hardened | 140-180 | 993/1241 | – | – | – | – | – |
| C | Mn | Mo | Cr | Ni | Cu | P | S | Si | V | Al |
| 0.25/0.28 | 0.40/0.70 | 0.15/0.25 | 0.80/1.10 | 0.30 max | 0.20 max | 0.025 max | 0.025 max | 0.17/0.37 | – | – |
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