27SiMn steel bar

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11-May-2024

The material 27SiMn has high hardenability. 27SiMn teel’s toughness decreases not much as heat treatment, but material 27SiMn has very high strength and abrasion resistance, especially when water quench, grade 27SiMn still has high toughness. However 27SiMn steel is sensitivity to the white dots very much and 27SiMn is sensitivity to temper brittleness tendency and overheating when heat treatment.
27SiMn is mainly used under tempering condition and used in the manufacture of high toughness and wear resistance of hot stamping.27SiMn can also used under fire or hot rolling using supply condition, such as the tractor caterpillar pin, etc.
27SiMn chemical composition %:

Grade	Chemical composition %:
Grade	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
27SiMn	0.24-0.32	1.1-1.4	1.1-1.4	≤0.035	≤0.035	≤0.30	≤0.30	≤0.030	≤0.15

27SiMn mechanical properties:

Grade	Mechanical properties:
	Tensile strength σb (Mpa)	Yield strength σ0.2 (Mpa)	Elongation σ5 (%)	reduction of area ψ (%)	Hardness	impact absorbing energy (Aku2/J)
	min	min	min	min	max	min
27SiMn	980	835	12	40	217HB	39

27SiMn condition of delivery: heat treatment(Normalizing, Annealing, or high temperature tempering) or do not heat treatment state.
If you have need for 27SiMn forged round bar, 27SiMn forged square bar, 27SiMn forged square bar, 27SiMn forged shafts and 27SiMn forged blocks. Please contact with us freely. KUNFENG will offer you more than your expect.