Qingsongqiao, Qianhu Village, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province, China, 213000
+86 18516265665 master@zhrolls.com

product-banner-image

JBT-4120-2017 image

backup rools image

backup rools image

backup rools image

Back-up Rolls	Material	45Cr4NiMoV、50Cr5MoV、60CrMnMo、60CrNiMo、70Cr3Mo、70Cr3NiMo
	Diameter	¢450-¢1600*
	Length	450mm-1780mm
	Hardness	38-54HRC
	Thickness of the hardened layer	25-55mm
	Execution Standards	JB/T4120-2017

Various material chemistries

Cold Rolling Mill Work Rolls and Intermediate Rolls

9Cr2Mo	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
9Cr2Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	1.70-2.10	≤0.25	0.20-0.40	—	—	—
9Cr3Mo	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
9Cr3Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	2.50-3.50	≤0.25	0.20-0.40	—	—	—
9Cr5Mo	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
9Cr5Mo	0.85-0.95	0.25-0.45	0.20-0.35	≤0.025	≤0.025	4.80-5.50	≤0.25	0.20-0.40	—	—	—
8Cr3MoV	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
8Cr3MoV	0.78-1.10	0.40-1.10	0.20-0.50			2.80-3.20	≤0.80	0.20-0.60	0.05-0.15	—	—
8Cr5MoV	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
8Cr5MoV	0.78-0.90	0.40-1.10	0.20-0.50	≤0.020	≤0.020	4.80-5.50	≤0.80	0.20-0.60	0.10-0.20	—	—
M2	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
M2	0.80-0.90	0.20-0.45	0.15-0.40	≤0.025	≤0.025	3.80-4.40	—	4.50-5.50	1.75-2.20	5.50-6.75	—
Cr12Mo1V1	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
Cr12Mo1V1	1.40-1.60	≤0.60	≤0.60	≤0.020	≤0.010	11.00-13.00	≤0.15	0.90-1.10	0.75-0.95	≤0.15	—
Cr12Mo1V1+Co	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
Cr12Mo1V1+Co	1.40-1.60	≤0.60	≤0.60	≤0.020	≤0.010	11.00-13.00	≤0.15	0.90-1.10	0.75-0.95	≤0.15	0.35-0.50

Cluster Mill Work Rolls and Intermediate Rolls

5H12	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
5H12	0.48-0.55	0.80-1.20	0.20-0.50	≤0.025	≤0.010	4.80-5.50	—	1.0-1.50	0.30-0.60	1.0-1.50	—
8Cr5MoV	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
8Cr5MoV	0.78-0.90	0.40-1.10	0.20-0.50	≤0.020	≤0.020	4.80-5.50	≤0.80	0.20-0.60	0.10-0.20	—	—

45Cr4NiMoV	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
45Cr4NiMoV	0.40-0.50	0.40-0.80	0.60-0.80	≤0.020	≤0.020	3.50-4.50	0.40-0.80	0.40-0.80	0.05-0.15	—	—
50Cr5MoV	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
50Cr5MoV	0.40-0.60	0.40-0.80	0.50-0.80	≤0.020	≤0.020	4.50-5.50	≤0.60	0.40-0.80	≤0.30	—	—
70Cr3Mo	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
70Cr3Mo	0.60-0.75	0.40-0.70	0.50-0.90	≤0.025	≤0.025	2.0-3.50	≤0.60	0.25-0.60	—	—	—

Hot Strip Mill Work Rolls and Plate Mill Rolls

60CrMo	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	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
60CrMn	0.55-0.65	0.25-0.40	0.70-1.00	≤0.025	≤0.025	0.80-1.20	≤0.25	—	—	—	—
60CrMnMo	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
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	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
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	C	Si	Mn	P	S	Cr	Ni	Mo	V	W	Co
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	—	—