39NiCrMo3

39NiCrMo3 EN 10083-3:2002	Comparasion of steel grades
	JUS	-
	DIN	39NiCrMo3
	BS	-
	GOST	-
	AISI	-
	UNI	-
	NF	-

Under EN10083-3:2002 standard, the 39NiCrMo3 Alloy steel is one of the most widely used precipitation hardening

grades in the business. While soft and ductile in the solution annealed condition, the 39NiCrMo3 Alloy steel is capable of high properties with a single precipitation or aging treatment.

39NiCrMo3 steel plate Chemical analysis -% by mass

Chemical elements	C	Si	Mn	P	S	Cr	Mo	Ni
%, by mass	0,35 - 0,43	£ 0,40	0,50 - 0,80	max 0.025	max 0,035	0,60-1,00	0,15-0,25	0,70-1,00
Permissible deviation	± 0.02	± 0,03	± 0,04	+ 0.005	+ 0.005	± 0.05	± 0.03	± 0.05

Mechanical properties in the quenchedand tempered condition

	d ≤ 16mm oder t ≤ 8mm	16mm < d ≤ 40mm 8mm < t ≤ 20mm	40mm < d ≤ 100mm 20mm < t ≤ 60mm	100mm < d ≤ 160mm 60mm < t ≤ 100mm	160mm < d ≤ 250mm 100mm < t ≤ 160mm
Re min (MPa)	785	735	685	635	540
Rm (MPa)	980-1180	930-1130	880-1080	830-980	740-880
A min. (%)	11	11	12	12	13
Z min. (%)	40	40	45	50	50
KV min. (J)	35	35	40	40	40

Jominy’s hardenability band

Distance in mm from quenched end Hardness in HRC (mm)
mm		1,5	3	5	7	9	11	13	15	20	25	30	35	40	45	50
+H	max.	60	60	59	58	58	57	57	56	55	52	51	49	48	46	45
+H	min.	52	51	50	49	48	46	44	43	39	36	34	33	32	31	30
+HH*	max.	60	60	59	58	58	57	57	56	55	52	51	49	48	46	45
+HH*	min.	55	54	53	52	51	50	48	47	44	41	40	38	37	36	35
+HL*	max.	57	57	56	55	55	53	53	52	50	47	45	44	43	41	40
+HL*	min.	52	51	50	49	48	46	44	43	39	36	34	33	32	31	30

Heat treatment conditions – informative

Hardening temperature in the end quench test	Quenching temperature	Quenching in	Tempering temperature
8500±50C	830-850 0C	Oil	550-650 0C

Maximum hardness for products to be supplied in the ’’treated to improve shearability (+S)’’ or ’’soft annealed (+A)’’ condition

+S HB max.	+A HB max.
Where the shearability is of importance, this steel should be ordered in the ‘’soft-annealed’’ condition	240

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