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StandardsGB/T81 62 Chinese national standardASTM A53 Standard of American Society of Testing MaterialsASME SA53 Boiler and pressure vessel--c-Ojrde of ASME
Diamensional tolerances:
Mechanical properties:
Standard codes | Models of steel tubes | Tensite strengthMPa | Yield strengthMPa | Elongation |
GB/T8162 | 10 | ≥335 | ≥205 | ≥24 |
20 | ≥390 | ≥245 | ≥20 | |
35 | ≥510 | ≥305 | ≥17 | |
45 | ≥590 | ≥335 | ≥14 | |
Q345 | ≥490 | ≥325 | ≥21 | |
15CrMo | ≥440 | ≥295 | ≥22 | |
12Cr1MoV | ≥490 | ≥245 | ≥22 | |
ASTM A53 ASME SA53 | A | ≥330 | ≥205 | Check the table in ASTM A 53Check the table in ASME SA53 |
Chemical composition:
Standard codes | Models of steel tubes | Chemical compositions | |||||||||
C | Si | Mn | P | S | Cu | Ni | Mo | Cr | V | ||
GB/T8162 | 10 | 0.07∼0.14 | 0.17∼0.37 | 0.35∼0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.15 | / |
20 | 0.17∼0.24 | 0.17∼0.37 | 0.35∼0.65 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | / | |
35 | 0.32∼0.40 | 0.17∼0.37 | 0.50∼0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | / | |
45 | 0.42∼0.50 | 0.17∼0.37 | 0.50∼0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | / | |
Q345 | 0.12∼0.20 | 0.20∼0.55 | 1.20∼1.60 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 | / | ≤0.25 | / | |
15CrMo | 0.12∼0.18 | 0.17∼0.37 | 0.40∼0.70 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | 0.40∼0.55 | 0.80∼1.10 | / | |
12Cr1MoV | 0.08∼0.15 | 0.17∼0.37 | 0.40∼0.70 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | 0.25∼0.35 | 0.90∼1.20 | 0.15∼0.30 | |
ASTMA53 ASMESA53 | A | ≤0.25 | / | ≤0.95 | ≤0.05 | ≤0.06 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 |
B | ≤0.30 | / | ≤1.20 | ≤0.05 | ≤0.06 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.40 | ≤0.08 | |
GB/T8162 seamless steel pipes
