16MnCr5 Forged Steel Round Bar

EN 1.7131 Steel 16MnCr5 Material EN 1.7131 steel (16MnCr5 material) is an European standard carburized steel (case hardening steel) with good hardenability and machinability. For larger cross-section parts, high surface hardness and wear resistance can be obtained after heat treatment, and...

EN 1.7131 Steel 16MnCr5 Material

EN 1.7131 steel (16MnCr5 material) is an European standard carburized steel (case hardening steel) with good hardenability and machinability. For larger cross-section parts, high surface hardness and wear resistance can be obtained after heat treatment, and low-temperaature impact toughness is also high. For specification and datasheet, please see the tables below.

16MnCr5 steel is generally used after carburizing and quenching, and is mainly used for manufacturing gears, worms, sealing bushings and other components.

(DIN EN 1.7131 Material) 16MnCr5 Steel Chemical Composition

The following table shows chemical composition of 16MnCr5 material (1.7131 steel).

	Chemical Composition %
Standard	Steel Name (Steel Number)	C	Si ≤	Mn	P ≤	S	Cr
EN 10084	16MnCr5 (1.7131)	0.14-0.19	0.40	1.00-1.30	0.025	≤ 0.035	0.80-1.10
EN 10084	16MnCrS5 (1.7139)	0.14-0.19	0.40	1.00-1.30	0.025	0.020-0.040	0.80-1.10

Mechanical Properties of 1.7131 Steel (16MnCr5 Material)

1.7131 material, 16MnCr5 steel Brinell hardness

●Soft annealed: ≤ 207 HBW
●Treated to hardness: 156-207 HBW
●Treated to ferrite-pearlite structure and hardness: 140-187 HBW
●Normalized: 138-187 HBW

●EN 1.7131, 16MnCr5 Tensile strength (after hardening and tempering at 200 °C)

●Dia. ≤ 16mm: Min. 1000 MPa
●16 < Dia. ≤ 40mm: Min. 800 Mpa
●40 < Dia. ≤ 100mm: Min. 600 Mpa

Heat Treatment Specification of 16MnCr5 (1.7131 Steel)

●End quench test Austenitizing temperature: 870℃ (30-35 minutes)
●Carburizing temperature: 880-980 ℃
●Core-hardening temperature: 860-900 ℃
●Case-hardening temperature: 780-820 ℃
●Tempering: 150 – 200 ℃ (≥ 1 hour)

Equivalent Grade

EN 1.7131 material (16MnCr5 steel) equivalent to ISO, US ASTM AISI SAE, Japanese JIS and Chinese GB standard. (For reference)

Region	Standard	Grade (Steel Number)	Remarks
European	EN 10084	16MnCr5 (1.7131)	European carburizing steel standard, suitable for case hardening with excellent machinability and hardenability.
ISO	ISO 683-11	16MnCr5	Internationally standardized grade identical to EN 10084, with equivalent chemical composition and property requirements.
USA	AISI SAE / ASTM A29	5115	US grade, belonging to chromium-manganese low-alloy carburizing steel. Slightly lower carbon content (0.13-0.18%) with slightly weaker hardenability.
Japan	JIS G4053	SCr415	Japanese grade, emphasizing chromium content (0.90-1.20%). Carbon content (0.13-0.18%) is similar to the European standard.
China	GB/T 5216	16CrMnH (a)/(b)	Chinese standard for gear steel. Grades (a)/(b) represent different hardenability groups, with significant differences in chemical composition (e.g., Mn, Cr content) compared to EN 10084-always verify with specific GB/T 5216 sub-standards.

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