20MnCr5

20MnCr5 EN 10084-1998, Number: 1.7147	Comparison of steel grades
	JUS	Č.4321
	DIN 17210	20MnCr5
	BS	-
	GOST	-
	AISI SAE	5120
	UNI 7846	20MnCr5
	NF A35-551-86	20MC5

Under EN 10084-1998 standard 20MnCr5 steel plate/sheet properties and heat treatment forgings, Including 20MnCr5 steel plate application and specifications,

We have all specifications，Including 20MnCr5 bars, rod, Plate, bar, square steel, rectangular steel,forgings

20MnCr5 steel plate Chemical composition (cast analysis)

Chemical elements	C	Si max	Mn	P max.	S	Cr	-	-
%, by mass	0,17-0,22	0,40	1,10-1,40	0,035	≤ 0,035	1,00-1,30	-
Permissible deviation	± 0,02	+ 0,03	± 0,05	+ 0,005	+ 0,005	± 0,05	-	-

20MnCr5 steel sheet Hardness limits for steel

Hardness HRC at a distance from quenched end of test piece (in milimetres) of
mm		1,5	3	5	7	9	11	13	15	20	25	30	35	40	45	50
+H	max.	49	49	48	46	43	42	41	39	37	35	34	33	32	-	-
+H	min.	41	39	36	33	30	28	26	25	23	21	-	-	-	-	-
+HH	max.	49	49	48	46	43	42	41	39	37	35	34	33	32	-	-
+HH	min.	44	42	40	37	34	33	31	30	28	26	25	24	23	-	-
+HL	max.	46	46	44	42	39	37	36	34	32	30	29	28	27	-	-
+HL	min.	41	39	36	33	30	28	26	25	23	21	-	-	-	-	-

Hardness requirements for products delivered in the conditions ’’treated to improve shearabilita’’ (+S), ’’anneled to maximum hardness requirements’’ (+A), ’’treated to hardness range’’ (+TH) or ’’treated to ferrite-pearlite structure and hardness range’’ (+FP)

Brinell hardness in the condition
+S max.	+A max.	+TH		+FP
		min.	max.	min.	max.
255	217	170	217	152	201

Non-metallic inclusions Requirements for microscopic degree of purity when tested in accordance with DIN 50 602 (method K) (valid for oxidic non-metallic inclusions)

D (mm) Bars Diameter d (mm)	K Total characteristic value K (oxides) for the individual cast
140 < d 200	K 4 ≤ 50
100 < d ≤ 140	K 4 ≤ 45
70 < d ≤ 100	K 4 ≤ 40
35 < d ≤ 70	K 4 ≤ 35
17 < d ≤ 35	K 3 ≤ 40
8 < d ≤ 17	K 3 ≤ 30
d ≤ 8	K 2≤ 35

Conditions for heat treating test bars and treatment of the steels

End quenchh test Quenching, 0C	Carbunnzing temperature, 0C	Core-hardening temperature, 0C	Case-hardening temperature, 0C	Tempering, 0C
870	880 to 980	860 to 900	780 to 820	150 to 200

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