12CrMo alloy structural steel

12CrMo is a pearlitic heat-strength steel with good cold strain plasticity and machinability, and acceptable weldability.

The two digits at the beginning of the steel number indicate the carbon content of the steel, expressed in ten thousandths of the average carbon content, such as 40Cr alloy pipes, 25Cr2MoVA alloy pipes.

12Crmo steel plate Chemical composition:

C	Si	Mn	S	P	Cr	Cu	Mo	Ni
0.1-0.15	≤0.30	0.6-0.9	≤0.025	≤0.025	0.9-102	≤0.25	0.15-0.25	≤0.025

12Crmo mechanical properties:
Tensile strength σb (MPa): ≥410(42)
Yield strength σs (MPa): ≥265(27)
Elongation δ5 (%): ≥24
Area shrinkage ψ (%): ≥60 Impact energy Akv (J): ≥110
Impact toughness value αkv (J/cm²): ≥137(14)
Hardness: ≤179HB
Sample size: sample blank size is 30mm

It is used to manufacture main pipes with steam parameters up to 510°C, superheated pipes with pipe wall temperature up to 540°C, etc. It can also be used to manufacture various elastic elements that work at high temperatures.

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