Thickness: 5-30mm

Width: 30-300mm

Length: customized

Product Detail | Technical Information | Packaging

Product Detail

Spring steel, as its name suggests, is most commonly used in the manufacture of springs. When hardened and tempered (as supplied, or heat treated by the customer) it offer excellent spring characteristics. Spring steel flat bars are widely used on auto fittings, auto manufacturing, hardware tools, chain manufacturing and other machinery manufacturing industry. In order to meet the stable demand for different applications, Shanghai Metal Corporation has developed wide range of sizes to meet the requirements from customers. If you want to know more about our products, please feel free to contact us, we will reply you within 24 hours

Grade: 65Mn, ASTM 9260, ASTM 5155, ASTM 5160, ASTM 6150, SUP7, SUP9, SUP9A, SUP10, etc.
Thickness: 5-30mm
Width: 30-300mm
Length: Customized

The elasticity of steel depends on its ability to elastically deform, that is, within the specified range, the ability to elastically deform it to withstand a certain load, and no permanent deformation occurs after the load is removed.

1. Leaf spring
2. Cars
3. Railway Vehicles
4. Agricultural Machinery
5. Agricultural Implements
6. Components and parts

Grade of Spring Steel Flat Bar:

GB	ASTM	JIS	EN	C	Si	Mn	Cr	V	P	S	HB
65Mn	1566	S65C	C60E	0.62- 0.70	0.17- 0.37	0.90- 1.20	<0.25		0.035	0.035	302
60Si2Mn	9260	SUP7	61SiCr7	0.56- 0.64	1.50- 2.00	0.70-1.0	<0.35		0.025	0.025	321
60Si2MnA	9260	SUP7	61SiCr7	0.56- 0.64	1.60- 2.00	0.70-1.0	<0.35		0.025	0.025	321
55CrMnA	5155	SUP9	55Cr3	0.52- 0.60	0.17- 0.35	0.65- 0.95	0.65- 0.95		0.025	0.025	321
60CrMnA	5160	SUP9A	60Cr3	0.56- 0.64	0.17- 0.37	0.70- 1.00	0.70- 1.00		0.025	0.025	321
SOCrVA	6150	SUP10	51CrV4	0.46- 0.54	0.17- 0.37	0.50- 0.80	0.80- 1.10	0.10- 0.20	0.025	0.025	321
60Si2CrA			54SiCr6	0.56- 0.64	1.40- 1.80	0.40- 0.70	0.70- 1.00		0.025	0.025	321
28MnSiB				0.24- 0.32	0.60-1.2	1.2-1.6	B (0.0005-0.0035)		0.035	0.035

Steel Grade	GB	ISO	AISI	JIS	DIN	NF
20Cr	GB20Cr	20Cr4	5120	SCr22,SCrl20	20Cr4	-
30Cr	GB34Cr4	34Cr4	5130	SCr2,SCr430	34Cr4	34Cr4
35Cr	GB35Cr	34Cr4	5132	SCr3,SCr435	34Cr4	34Cr4
40Cr	GB40Cr	37Cr4	5140	SCr4,SCr440	41Cr4	41Cr4
45Cr	GB45Cr	41Cr4	5145	SCr5,SCr445	41Cr4	41Cr4
50Cr	GB50Cr	-	5150	SCr445	-	-
20CrMo	-	18CrMo4	-	SCM22.SCM430	-	25CrMo4
30CrMo	GB30CrMo	25CrMo4	4130	SCM2,SCM430	25CrMo4	25CrMo4
30CrMoA	GB30CrMoA	34CrMo4	4130	SCM430	34CrMo4	34CrMo4
35CrMo	GB35CrMo	34CrMo4	4137	SCM3,SCM435	34CrMo4	34CrMo4
42CrMo	GB42CrMo	42CrMo4	4140	SCM440	42CrMo4	42CrMo4

Chemical Composition of Spring Steel Flat Bar:

Steel Grade	Chemical Composition (%)
	C	Mn	Si	S	P	Cr	Cu	Ni
# 45	0.42-0.50	0.50-0.80	0.17-0.37	≤0.035	≤0.035	≤0.25	≤0.25	≤0.30
# 50	0.47-0.55	0.50-0.80	0.17-0.37	≤0.035	≤0.035	≤0.25	≤0.25	≤0.30
# 55	0.52-0.60	0.50-0.80	0.17-0.37	≤0.035	≤0.035	≤0.25	≤0.25	≤0.30
# 60	0.57-0.65	0.50-0.80	0.17-0.37	≤0.035	≤0.035	≤0.25	≤0.25	≤0.30
# 70	0.67-0.75	0.50-0.80	0.17-0.37	≤0.035	≤0.035	≤0.25	≤0.25	≤0.30
65Mn	0.62-0.70	0.90-1.20	0.17-0.37	≤0.035	≤0.035	≤0.25	-	-
55Si2Mn	0.52-0.60	0.60-0.90	1.50-2.00	≤0.035	≤0.035	≤0.35	-	-
60Si2Mn	0.56-0.64	0.60-0.90	1.50-2.00	≤0.035	≤0.035	≤0.35	-	-
60Si2MnA	0.56-0.64	0.60-0.90	1.60-2.00	≤0.03	≤0.03	≤0.35	-	-
55CrMnA	0.52-0.60	0.65-0.95	0.17-0.37	≤0.03	≤0.03	0.65-0.95	-	-
60CrMnA	0.56-0.64	0.70-1.00	0.17-0.37	≤0.03	≤0.03	0.70-1.00	-	-
50CrVA	0.46-0.54	0.50-0.80	0.17-0.37	≤0.03	≤0.03	0.80-1.10	-	-
60CrMnBA	0.56-0.64	0.70-1.00	0.17-0.37	≤0.03	≤0.03	0.70-1.00	-	-

Packaging of Spring Steel Flat Bar - Leaf Spring:

Shanghai Metal Corporation Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.

1)SMC Standard

2)Customization

Case Study

Products & Service

Spring Steel Flat Bar

Metal