40CrMn forged steel round bar

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31-May-2024

KUNFENG offer and 40CrMn hot rolled round bar. 40CrMn with high toughness, high hardenability, oil cooling can be completely Φ 150 mm parts hardening. Creep resistance is stability when at 450 °. Impact toughness in low-temperature of 40CrMn is good. Within the range of 450 ~ 550 ℃ tempering with the second category of temper brittleness, forming points tend to be larger. As good hardenability, normalizing and high temperature tempering must be used to reduce the hardness, improving cutting processability. It is common used in quenched and tempered condition.

40CrMn Chemical analysis -% by mass*

Grade	C	Si	Mn	P	S	Cr	Ni	Cu
Grade	max	max	max	max.	max.	max	max	max
40CrMn	0.37-0.45	0.17-0.37	0.90-1.20	0.035	0.035	0.90-1.20	0.030	0.030

40CrMn Merchanical Propertites

Grade	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation in 100-150 mm(%)	Impact(Akv(J)	Hardness
40CrMn	≥980(100)	≥835(85)	≥9	≥47	≤229HB

Standard: DIN 7527-6,EN 10204, EN 10228-3,EN 10250,N10083,SEW 550
Delivery Condition: Hot forged +Normalized+ Rough turned
Q/T:Quench+ Temper Annealing
Steelmaking Process: electric furnace + LF refining furnace + argon protection casting + VD vacuum degassing furnace ingot (bottom gating)
Diameter: 5mm-1200mm ,the forged round bar is from 80mm-1200mm:
Length: 1000-12000mm
Inspecting: SEP1921 CLASS C/C，D/D，E/E
Min qty: 1pcs
Tolerance for forged round bar: OD: 0/+3.0mm Length: 0/+20.0mm Straightness: 3mm/1000mm

steel round bar

KUNFENG can offer 40CrMn forged and hot rolled round bar in carbon, alloy, stainless steel material, Our Company through quality, environment, occupational health and safety management system, etc. Products have passed the ISO9001:2000 quality management system certification, China CCS, South Korea KR, Italy RINA, Japan NK, France BV, the United States ABS, Russia RS, Lloyd's LR, Germany Lloyd's GL classification society certification.