12Cr2Ni4A Steel round bar

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11-May-2024

12Cr2Ni4A Steel round bar is a kind of structural alloy steel round bar and which under GB/T 3077-1988 standard. 12Cr2Ni4A steel round bar has high quality and it has high strength,toughness and good hardenability.
12Cr2Ni4A is widely used for large carburized parts that is to work under high load and alternating stress, such as the high load of all kinds of gear, worm gear, worm, shaft and other mechanical structure.

12Cr2Ni4A Steel round bar chemical composition %:

Grade	Chemical composition %:
Grade	C	Si	Mn	P	S	Cr	Ni	Cu
20Cr2Ni4A	0.10-0.16	0.17-0.37	0.30-0.60	≤0.035	≤0.035	1.25-1.65	3.25-3.65	≤0.030

12Cr2Ni4A Steel round bar mechanical properties:

Grade	Mechanical properties:
	Tensile strength σb (Mpa)	Yield strength σ0.2 (Mpa)	Elongation σ5 (%)	reduction of area ψ (%)	Hardness	Notched bar impact strength αkv (J/cm2)
	min	min	min	min	max	min
12Cr2Ni4A	1080	835	10	50	269HB	71

12Cr2Ni4A steel round bar condition of delivery: heat treatment(Normalizing, Annealing, or high temperature tempering) or do not heat treatment state.

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