30CrNiMo8

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Chemical composition %   of   steel   30CrNiMo8 

C	Si	Mn	Ni	P	S	Cr	Mo
0.26 - 0.34	max   0.4	0.5 - 0.8	1.8 - 2.2	max   0.025	max   0.035	1.8 - 2.2	0.3 - 0.5

Mechanical properties of   steel   30CrNiMo8

Nominal diameter (mm):	to 16	16 - 40	40 - 100	100 - 160	160 - 250	250 - 330	330 - 660
Rm - Tensile strength (MPa) (+QT)	1250-1450	1250-1450	1000-1300	1000-1200	850-1100	850	800

Nominal diameter(mm):   or for flat products thickness: to 8; 8-20; 20-60; 60-100; 100-160;	to 16	16 - 40	40 - 100	100 - 160	160 - 250
Re - Upper yield strength or  Rp0.2 - 0.2% proof strength (MPa) (+QT)	1050	1050	900	800	700

Nominal thickness(mm):	to 160	160 - 330	330 - 660
Re - Upper yield strength (MPa) (+QT)	700	630	590

KV - Impact energy (J) longitud., (+QT)	+20° 30-45

KV - Impact energy (J) transverse, (+QT)	+20° 20-27

A - Min. elongation at fracture (%) transverse, (+QT)	8-14

Nominal thickness (mm):	to 16	16 - 40	40 - 100	100 - 160	160 - 250
A - Min. elongation Lo = 5,65 √ So (%) (+QT), round products	9	9	10	11	12

Nominal diameter (mm):     or for flat products thickness: to 8; 8-20; 20-60; 60-100; 100-160;	to 16	16 - 40	40 - 100	100 - 160	160 - 250
Z - Reduction in cross section on fracture (%) (+QT)	40	40	45	50	50

Brinell hardness   (HBW):   (+A)

248 - 255