20MnCr5 / 1.7149 Steel

20MnCrS5 / 1.7149 Steel manufacturers and suppliers, supplied in round rods,square/flat bars,rollers,shafts,blocks and forging pieces.

20MnCrS5 / 1.7149 Steel a Chromium-Manganese steel according to DIN standard which has tensile strength and wearing resistance after QT heat treatment.It is widely used in piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling parts.

20MnCrS5 / 1.7149 Steel Chemical Composition per EN 10084 (Case Hardening Steel)

GRADE	NUMBER	C	Si	Mn	P	S	Cr
20MnCr5	1.7149	0.17-0.22	≤ 0.40	1.10-1.40	≤ 0.025	0.020-0.040	1.00-1.30

20MnCrS5 / 1.7149 Steel Mechanical Property

Tensile strength	Yield strength	Elongation	Reduction of area
1400Mpa	1200MPa	13	57

20MnCrS5 / 1.7149 Steel Related Specifications

DIN	AFNOR	BS	ASTM/SAE
16MnCr5	16MC5	590M17	5115
20MnCr5	20MC5	–	5120

20MnCrS5 / 1.7149 Steel Heat Treatment & Mechanical Property

	20MnCr5/20MnCrS5
Normalizing,°C	840-870
Annealing,°C	650-700
Carburizing,°C	880-980
Core Hardening,°C	860-900
Case Hardening,°C	780-820
Tempering,°C	150-200

20MnCrS5 / 1.7149 Steel Hardness requirements for delivery conditions

Conditions	16MnCr5/16MnCrS5	20MnCr5/20MnCrS5
Treated to improve shearability(+S)	–	≤255
Soft annealed(+A)	≤207	≤217
Treated to Hardness range(+TH)	156-207	170-217
Treated to ferrite-pearlite structure and hardness range(+FP)	140-187	152-201
Normalized(+N)	138-187	140-201

20MnCrS5 / 1.7149 Steel Hardenability Limits

Distance from quenched end mm		1.5	3.0	5.0	7.0	9.0	11	13	15	20	25	30	35	40
16MnCr5+H 16MnCrS5+H	Min	39	36	31	28	24	21	–	–	–	–	–	–	–
	Max	47	46	44	41	39	37	35	33	31	30	29	28	27
20MnCr5+H 20MnCrS5+H	Min	41	39	36	33	30	28	26	25	23	21	–	–	–
	Max	49	49	48	46	43	42	41	39	37	35	34	33	32
16MnCr5+HH 16MnCrS5+HH	Min	42	39	35	32	29	26	24	22	20	–	–	–	–
	Max	47	46	44	41	39	37	35	33	31	30	29	28	27
20MnCr5+HH 20MnCrS5+HH	Min	44	42	40	37	34	33	31	30	28	26	25	24	23
	Max	49	49	48	46	43	42	41	39	37	35	34	33	32
16MnCr5+HL 16MnCrS5+HL	Min	39	36	31	28	24	21	–	–	–	–	–	–	–
	Max	44	43	40	37	34	32	30	28	26	25	24	23	22
20MnCr5+HL 20MnCrS5+HL	Min	41	39	36	33	30	28	26	25	23	21	–	–	–
	Max	46	46	44	42	39	37	36	34	32	30	29	28	27

20MnCrS5 / 1.7149 Steel Supply Form & Size

• Round Bars:  Dia.80 – 1,000mm as Forged
• Flat / Square Bars:  Thickness Max.800mm
• Shafts, Rollers, Blocks:  Customized or According to Drawing
• Rolled Round Bars:  Dia.16 – 130mm with UT Assurance

Heat treatment: Normalizing (+N), Annealing (+A)
Surface finish:Black / Rough turned / Peeled