40CrMnMo steel commonly used in the manufacture of heavy duty, larger cross-section of the gear shaft, gear, truck rear axle axle, shaft, eccentric shaft, connecting rod, turbine similar parts, can also be used instead of 40CrNiMo.

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40CrMnMo hot rolled steel round bars

After quenching and tempering, 40CrMnMo round steel has good comprehensive mechanical properties, good hardenability, and high tempering stability. Mostly used in quenched and tempered state. 40CrMnMo round steel is often used to manufacture heavy-duty, large cross-section gear shafts, gears, rear axle axles, shafts, eccentric shafts, connecting rods, and similar parts of steam turbines. It can also be used instead of 40CrNiMo round steel.

Chemical and Mechanical

Chemical composition (wt.%)

C(％)	Si(％)	Mn(％)	Cr(％)	Mo(％)
0.37-0.45	0.17-0.37	0.90-1.20	0.90-1.20	0.20-0.30

Mechanical Properties

Rp0.2 (MPa)	Rm (MPa)	Impact KV (J)	Elongation A (%)	A Z (%)	Delivery	Hardness HB
823 (≥)	834 (≥)	41	33	12	Solution & Aging, Ann, Ausaging, Q+T	233

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Shandong Chengshun Metal Materials Co., Ltd. is located in Jinan City, Shandong Province. It is a comprehensive company dealing in high-quality steel products, with a superior geographical location and very convenient transportation. The company has a complete and scientific quality system, and has been recognized by the industry for its integrity, strength and product quality.

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Steel Round Bars