ASTM A105 is a standard established by the American Society for Testing and Materials (ASTM), primarily applicable to carbon steel forged fittings used in high-temperature and high-pressure environments, including threaded couplings, elbows, tees, etc. This standard specifies the performance requirements for ASTM A105 threaded couplings under high-temperature and high-pressure conditions, covering the entire process from raw material procurement to finished product inspection. With its extensive and targeted scope, it provides critical assurance for the safe operation of pipeline systems.
ASTM A105 Material Properties
ASTM A105 material exhibits excellent comprehensive performance. In terms of mechanical properties:
Tensile strength ≥ 485 MPa
Yield strength ≥ 250 MPa
Elongation ≥ 20%
It demonstrates good toughness and tensile resistance, effectively withstanding pressure and external impacts during pipeline operation.
In corrosion resistance, the material performs well in ambient and moderate-temperature environments against neutral aqueous solutions, steam, and other media, reducing the risk of corrosion damage and extending service life. Additionally, it offers superior ** forgeability and machinability**, enabling the production of complex-shaped fittings to meet diverse pipeline connection requirements.
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Cu | Ni | Cr | Mo | V |
| ASTM A105 | MIN | 0.60 | 0.10 | ||||||||
| MAX | 0.35 | 1.05 | 0.035 | 0.040 | 0.35 | 0.40 | 0.40 | 0.30 | 0.12 | 0.08 |
Mechanical properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % | HARDNESS |
| ASTM A105 | 485 min | 250 min | 22 min | 30 min | 197 max |
