41CrS4 / 1.7039 Steel 

41CrS4 / 1.7039 Steel Chemical Composition per EN 10083-3

 

GRADE	NUMBER	C	Si	Mn	P	S	Cr
41CrS4	1.7039	0.38-0.45	≤ 0.40	0.60-0.90	≤ 0.025	0.02-0.04	0.90-1.20

41CrS4 / 1.7039 Steel Description

Special structural steel.

41CrS4 / 1.7039 Steel Applications

Low and moderately stressed parts for vehicles, engines and machines where hard, wear resisting surface is needed.

Hardness as surface hardened about 54 HRC.

41CrS4 / 1.7039 Steel Physical properties (average values) at ambient temperature

Modulus of elasticity [103 x N/mm2]: 210 Density [g/cm3]: 7.80

41CrS4 / 1.7039 Steel Soft Annealing

Heat to 680-720oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 241.

41CrS4 / 1.7039 Steel Normalizing

Temperatue: 840-880oC.

41CrS4 / 1.7039 Steel Hardening

Harden from a temperature of 820-860oC followed by oil or water quenching.

41CrS4 / 1.7039 Steel Tempering

Tempering temperature: 540-680oC.

41CrS4 / 1.7039 Steel Mechanical Properties in Quenched and Tempered Condition

Diameter (mm)	0.2 proof stress (N/mm2)	Tensile stregth (N/mm2)	Elongation (%)	Reduction (%)	Impact energy (J)
Up to 16	800	1000-1200	11	30	30
17-40	660	900-110	12	35	35
41-100	560	800-950	14	40	35

41CrS4 / 1.7039 Steel Hardenability in the end-quench test

Quenching temperature in the end-quench test is 850oC

Hardness	1.5	3	5	7	9	11	13	15	20	25	30	35	40	45	50
H max.	61	61	60	59	58	56	54	52	46	42	40	38	37	36	35
H min.	53	52	50	47	41	37	34	32	29	26	23	21	–	–	–
HH max.	61	61	60	59	58	56	54	52	46	42	40	38	37	36	35
HH min.	58	55	53	51	47	43	41	39	35	31	29	27	26	25	24
HL max.	58	58	57	55	52	50	47	45	40	37	34	32	31	30	29
HL min.	53	52	50	47	41	37	34	32	29	26	23	21	–	–	–

 41CrS4 / 1.7039 Steel Forging

Hot forming temperature: 1050-850oC.