Standard: GB / T 3077-1988
Characteristics and scope of application:
Is a strong pearlite steel heat, cold and cutting the plastic strain of all good, good weldability. Parameters used in the manufacture of steam leading up to 510 ℃ tube wall temperature of 540 ℃ overheating of tubes, etc., may also be made to work under a variety of high-temperature elastic element.
Mechanical Properties:
Tensile strength σb (MPa): ≥ 410 (42)
Yield strength σs (MPa): ≥ 265 (27)
Elongation δ5 (%): ≥ 24
Shrinkage section ψ (%): ≥ 60
Impact energy Akv (J): ≥ 110
Impact toughness values αkv (J/cm2): ≥ 137 (14)
Hardness: ≤ 179HB
Sample size: the sample size of 30mm rough
Heat treatment and microstructure norms:
Regulate heat treatment: quenching 900 ℃, air-cooled; tempering 650 ℃, air-cooled.
Material specifications of origin
12CrMo 76-114x4-30 GB8193 Baosteel / import
12CrMo 133-168x4-30 GB8163 Baosteel / import
12CrMo 219-820x10-70 GB8163 Chengdu / import |
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