Material 51CrV4 (1.8159)

Nitrided steel with high elasticity and wear resistance

51CrV4 is the right choice when high elasticity combined with good toughness is required. This heat-treatable spring steel is primarily used for heavily stressed components that must operate reliably under varying and dynamic loads – for example, in suspension springs, clutch and brake springs, or heavily loaded machine components. It offers impressive long-term strength, excellent spring performance and very good resistance to wear and fatigue.

Material designations and standards

Material number:

1.8159

Standard designation (EN):

51CrV4

Standards:

DIN EN 10089
DIN EN 10132-4
DIN EN 10250-3
DIN EN 10277
DIN EN 10343

AISI/SAE:

6154

Similar materials:

–

Specifications and details

Material name & material no.	Comparable materials or standards					Main elements of material analysis (mass fraction in %)										Physical and mechanical properties								General heat treatment, unless otherwise agreed
acc. to DIN EN 10293	acc. to	acc. to ASTM	acc. to SAE/AISI	acc. to JIS	acc. to China	C	Si	Mn	Cr	Mo	Ni	N	Cu	Nb	Other elements	Density in kg/dm3	Type of heat treatment	Rp0.2 min	Rm min	Hardness values in HB (approx.)	A % min	KV2 J min	Temperature °C
GS200 & 1.0449	DIN EN 10340 or SEL	A 216 Grade WCA		SC360	ZG200-400	≤ 0,18	≤ 0,60	≤ 1,20	_	_	_	_	_	_	_	_	+N	200	380 - 530	110 - 155	25	35	RT	Normalizing
GS240 & 1.0455	DIN EN 10340 or SEL	A 414 Grade F A 445	1012	SB450 SB480	_	≤ 0,23	≤ 0,60	≤ 1,20	_	_	_	_	_	_	_	_	+N	240	450 - 600	130 - 180	22	31	RT	Normalizing
G20Mn5 & 1.6220	DIN EN 10213, DIN EN 10340 or SEL	A 352 Grade LCC	_	SCC 3 SCPH 11-CF	ZG300-500	0,17 - 0,23	≤ 0,60	1,00 -1,60	_	_	≤ 0,80	_	_	_	_	7,8	+N \| +QT	300 \| 300	480 - 620 \| 500 - 650	140 - 185 \| 150 - 190	20 \| 22	27 \| 50 \| 27 \| 60	-30 \| RT \| -40 \| RT	Normalizing \| Quenched and tempered
G24Mn6 & 1.1118	DIN EN 10213, DIN EN 10340 or SEL	_	_	_	_	0,20 - 0,25	≤ 0,60	1,50 - 1,80	_	_	_	_	_	_	_	7,8	+QT1 \| +QT2 \| +QT3	550 \| 500 \| 400	700 - 800 \| 650 - 800 \| 600 - 800	210 - 240 \| 190 - 240 \| 180 - 240	12 \| 15 \| 18	27 \| 27 \| 27	-20 \| -30 \| -30	Quenched and tempered
G20Mo5 & 1.5419	DIN EN 10213 or SEL	A 217 Grade WC1 A 217 J12524	4422	SCPH 11 SCPL 11	ZG19MoG	0,15 - 0,23	≤ 0,60	0,50 - 1,00	_	0,40 - 0,60	_	_	_	_	_	7,85	+QT	245	440 - 590	130 - 175	22	27	RT	Quenched and tempered
G15CrMoV6-9 & 1.7710	1.7711 acc. to DIN EN 10269 or SEL	_	_	_	_	0,12 - 0,18	≤ 0,60	0,60 - 1,00	1,30 - 1,80	0,80 - 1,00	_	_	_	_	V 0,15 - 0,25	7,85	+QT1 \| +QT2	700 \| 930	850 - 1000 \| 980 - 1150	250 - 300 \| 290 - 340	10 \| 6	27	RT	Quenched and tempered
G17CrMo9-10 & 1.7379	DIN EN 10213 or SEL	A 217 Grade WC9 A 487 Grade 8 Class A	4118	SCPH 32-CF	ZG17Cr2Mo1 ZG12Cr2Mo1G	0,13 - 0,20	≤ 0,60	0,50 - 0,90	2,00 - 2,50	0,90 - 1,20	_	_	_	_	_	7,85	+QT	400	590 - 740	175 - 220	18	40	RT	Quenched and tempered
G26CrMo4 & 1.7221	SEW 658 or SEL	A 148 Grade 105-85	4118	SCCrM 1	25CrMo	0,22 - 0,29	≤ 0,60	0,50 - 0,80	0,08 - 1,20	0,15 - 0,30	_	_	_	_	_	7,85	+QT1 \| +QT2	300 - 450 \| 550	550 - 750 \| 700 - 850	160 - 220 \| 210 - 250	14 - 16 \| 10	27 - 40 \| 18	RT	Quenched and tempered
G42CrMo4 & 1.7231	1.7225 acc. to DIN EN 10250	_	4140 4142	SCM440	42Cr1Mo 40CrMnMo	0,38 - 0,45	≤ 0,60	0,60 - 1,00	0,08 - 1,20	0,15 - 0,30	_	_	_	_	_	7,85	+QT1 \| +QT2	350 - 600 \| 700	650 - 950 \| 850 - 1000	190 - 280 \| 250 - 300	10 - 12 \| 10	16 - 31 \| 27	RT	Quenched and tempered
G35CrNiMo6-6 & 1.6579	_	_	4337 4330	SNCM447	_	0,32 - 0,38	≤ 0,60	0,60 - 1,00	1,40 -1,70	0,15 - 0,35	1,40 - 1,70	_	_	_	_	_	+N \| +QT1 \| +QT2	500 - 550 \| 650 - 700 \| 800	750 - 950 \| 800 - 1000 \| 900 - 1050	220 - 280 \| 240 - 300 \| 265 - 310	12 \| 12 \| 10	31 \| 30 - 45 \| 35	RT	Annealed \| Quenched and tempered
GX9Ni5 & 1.5681	_	_	_	_	_	0,06 - 0,12	≤ 0,60	0,50 - 0,80	_	_	4,50 - 5,50	_	_	_	_		+QT	380	550 - 700	160 - 210	18	100	RT	Quenched and tempered
G17NiCrMo13-6 & 1.6781	DIN EN 10213 or SEW520	A 352 Grade LC2-1 A 352 J42215	_	_	ZG17Ni3Cr2Mo	0,15 - 0,19	≤ 0,50	0,55 - 0,80	1,30 - 1,80	0,45 - 0,60	3,00 - 3,50	_	_	_	_	7,85	+QT	600	750 - 900	220 - 265	15	27	-80	Quenched and tempered
GX3CrNi3-4 & 1.6982	DIN EN 10213 or SEL	A 217 Grade CA15 A 743 J91540		SCS 1	ZG05Cr13Ni4Mo	≤ 0,05	≤ 1,00	≤ 1,00	12,00 - 13,00	≤ 0,70	3,50 - 5,00	_	_	_	_	7,7	+QT	500	700 - 900	210 - 265	15	27	120	Quenched and tempered

The advantages of 51CrV4 (1.8159)

High surface hardness – for maximum wear resistance

Enhanced fatigue strength – Resists vibrations and dynamic loads

Good dimensional stability – minimal warping during nitriding

Tough core, hard outer layer – the ideal combination for components subjected to high loads

Long service life – Cost-effective thanks to reduced maintenance and fewer replacements

Enquire now

Areas of application

Mechanical Engineering

Vehicle manufacturing

Aerospace

Energy and Power Station Technology

Chemical composition and mechanical properties.

C (Carbon):

0,47 - 0,55 %

Si (Silicon):

≤0,40 %

Mn (Manganese):

0,70 - 1,10 %

Cr (Chromium):

0,90 - 1,20 %

Density in kg/dm³:

7.85

Hardness (HB):

≤ 300 HB

Why 51CrV4?

Cost-effectiveness
51CrV4 is easy to machine and forge, but is only weldable to a limited extent and requires pre- and post-weld heat treatment.

Machining
The material is easy to machine and weld. Alternatively, 51CrV4 is also well suited to forging.

Applications
51CrV4 is a popular choice in various industrial sectors, for example for heavy-duty axles, gears or chassis components.