| Customization: | Available |
|---|---|
| Type: | Alloy Steel Bar |
| Standard: | AISI, ASTM, GB, JIS, DIN, BS |
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This is a controlled yield strength material that manufactured to API specification 5ct. L80 is usually used in wells with sour (hydrogen sulfide) environments, casing, production tubing, coupling stock, pup joints, and various downhole accessories. L80 (API 5CT) is a medium carbon steel and is equivalent to SAE 4140.
Process: Cold Drawn+Stress Relieved+Quenched and Tempered
Surface: Black Surface
End: paint as your marks
| Carbon % | 0.38 - 0.43 |
| Manganese % | 0.75 - 1.00 |
| Phosphorus, max % | 0.04 |
| Sulfur, max % | 0.04 |
| Silicon % | 0.15 - 0.35 |
| Chromium % | 0.80 - 1.10 |
| Molybdenum % | 0.15 - 0.25 |
| Condition | Grade | Medium |
| Annealed or normalized | A519-4140 | Air |
| Quenched and tempered | A519-4140 | Polymer or oil |
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A |
B | C | D | Macroscopic Structure: | ||||||
|
Heavy |
Thin | Heavy | Thin | Heavy | Thin | Heavy | Thin | Ordinary Porosity | Centre Porosity |
Segregation |
| 0 | 0.5 | 0 | 0.5 | 0 | 0 | 0.0 | 1.0 | 1.0 | 0.5 |
0.5 |
| Tensile Strength | 655 MPa min | 95,000 psi min |
| Yield Strength | 552 MPa min | 655 MPa max |
| 80,000 psi min | 95,000 psi max | |
| Total Elongation Under Load | 0.500 % | - |
| Hardness | 23 Max HRC | 241 Max HBW |
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