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Back-up Rolls

Work Rolls

Back-up Rolls & Work Rolls	Material	60CrMo、60CrMn、60CrMnMo、50Cr5MoV、65Cr5MoV
	Diameter	¢450-¢1600*
	Length	450mm-1780mm
	Hardness of Barrel	33-50HSD(Cast iron Rolls) 50-70HSD(Alloy Cast Iron Rolls) 35-55HSD(Carbon Cast Steel Rolls) 50-80HSD(Alloy Cast Steel Rolls) 50-70HSD(Forged Steel) 80-90HSD(HSS)
	Hardness of Neck	25-40HSD(Cast iron Rolls) 30-45HSD(Alloy Cast Iron Rolls) 30-50HSD(Carbon Cast Steel Rolls) 35-55HSD(Alloy Cast Steel Rolls) 35-50HSD(Forged Steel) 40-60HSD(HSS)
	Thickness of hardened layer Harden depth	25-55mm

Various material chemistries

Hot Strip Rolling Mill Work Rolls

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
60CrMo	0.55-0.65	0.17-0.30	0.50-0.80	≤0.025	≤0.025	0.50-0.80	≤0.25	0.20-0.40	—	—	—
60CrMn	0.55-0.65	0.25-0.40	0.70-1.00	≤0.025	≤0.025	0.80-1.20	≤0.25	—	—	—	—
60CrMnMo	0.55-0.65	0.25-0.40	0.70-1.00	≤0.025	≤0.025	0.80-1.20	≤0.25	0.20-0.30	—	—	—
50Cr5MoV	0.40-0.55	0.20-0.60	0.20-0.60	≤0.025	≤0.025	4.00-5.50	≤0.60	0.25-0.60	≤0.30	—	—
65Cr5MoV	0.60-0.70	0.30-0.70	0.20-0.60	≤0.025	≤0.025	4.00-5.50	≤0.25	0.50-1.00	0.05-0.10	—	—

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
AS 60 I	0.55-.065	0.20-0.60	0.50-1.00	≤0.035	≤0.030	0.80-1.20	0.20-0.50	0.20-0.60	≤1.00
AS 65 I	0.60-0.70	0.20-0.60	0.50-0.80	≤0.035	≤0.030	0.80-1.20	0.20-0.50	0.20-0.45
AS 70	0.65-0.75	0.20-0.45	0.90-1.20	≤0.035	≤0.030	0.80-1.20	0.20-0.50	0.20-0.45
AS 70 I	0.65-0.75	0.20-0.45	1.40-1.80	≤0.035	≤0.030	0.80-1.20	0.20-0.50	0.20-0.45
AS 70 II	0.65-0.75	0.20-0.45	1.40-1.80	≤0.035	≤0.030	0.80-1.20	0.20-0.50	0.20-0.45
AS 75	0.70-0.80	0.20-0.45	0.60-0.90	≤0.035	≤0.030	0.75-1.00	0.20-0.50	0.20-0.45
AS 70 I	0.70-0.80	0.20-0.70	0.70-1.10	≤0.035	≤0.030	0.80-1.50	0.20-0.50	0.20-0.60

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
IC	2.90-3.60	0.60-1.20	0.40-1.20	≤0.025	≤0.080	0.60-1.20		0.20-0.60
IC I	2.90-3.60	0.60-1.20	0.40-1.20	≤0.025	≤0.080	0.70-1.20	0.50-1.00	0.20-0.60
IC II	2.90-3.60	0.60-1.20	0.40-1.20	≤0.025	≤0.080	0.70-1.20	1.01-2.00	0.20-0.60
IC III	2.90-3.60	0.60-1.20	0.40-1.20	≤0.025	≤0.080	0.70-1.20	2.01-3.00	0.20-1.00
IC IV	2.90-3.60	0.60-1.50	0.40-1.20	≤0.025	≤0.080	1.00-2.00	3.01-4.80	0.20-1.00
IC V	2.90-3.60	0.60-1.50	0.40-1.20	≤0.025	≤0.080	1.00-2.00	3.01-4.80	0.20-2.00

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
HSS	1.50-2.20	0.30-1.00	0.40-1.20			3.00-8.00	0.00-1.50	2.00-8.00		0.00-8.00	2.00-9.00
S-HSS	0.60-1.20	0.80-1.50	0.50-1.00			3.00-9.00	0.20-1.20	2.00-5.00		0.00-3.00	0.40-3.00

Material	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
GS 140	1.30-1.50	1.30-1.60	0.50-1.00	≤0.035	≤0.030	0.40-1.00	0.20-0.50	0.20-0.50
GS 150	1.40-1.60	1.00-1.70	0.60-1.00	≤0.035	≤0.030	0.60-1.00	0.20-0.50	0.20-0.50
GS 160	1.50-1.70	0.80-1.50	0.60-1.00	≤0.035	≤0.030	0.50-1.50	0.20-0.50	0.20-0.80
GS 190	1.80-2.00	0.80-1.50	0.60-1.00	≤0.035	≤0.030	0.50-2.00	0.20-0.50	0.20-0.80

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