Product Details

Spring Steel Flat Bar

SMC are suppliers of spring steel flat bar, we also offer spring steel round bar, plate and sheet, and spring steel strip. Bar is available in carbon, chrome vanadium and silicon manganese spring steel types. Supplied in full bar lengths or cut as one offs or multiple cut pieces.We welcome enquiries for spring flat steel bar. Please contact our sales team who may be able to assist you with your enquiry.

Specification of Spring Steel Flat Bar:
1.Grade: 45, 50, 55, 60, 70, 65Mn, 55SiMnV, 60Si2MnA, 60Si2CrA, etc.
2.Dimension:
Thickness: 5-25mm
Width: 50-150mm
Length: customized.
3.Features: The chemical compositions helps spring steel to endure significant bending or twisting and return to its original shape without deforming.
4.We can offer a sample for your testing.

Grade of Spring Steel Flat Bar:

GB	ASTM	JIS	DIN	BS	NF
#45	1045	S45C S48C	C45	-	-
#50	1050	S50C S53C	CK53	060A52	XC48TS
#55	1055	S55C	C55E	-	-
#60	1060	S58C	CK60	-	-
#70	1070	S70C	CK67	070A72	-
65Mn	1066	-	-	-	-
55Si2Mn	9255	-	55Si7	-	-
60Si2Mn	9260	SUP6	60Si7	-	-
60Si2MnA	9260	SUP6	60Si7	-	-
55CrMnA	5155	SUP9	55Cr3	-	-
60CrMnA	5160	SUP9A		-	-
50CrVA	6150	SUP10A	51CrV4	-	-
60CrMnBA	51B60	SUS11	58CrMnB4	-	-

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	-	-

Application of Spring Steel Flat Bar:

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.

- Leaf

- Automobile leaf(plate)spring

- Anchor Plate

- Agricultural machinery &implements

Types of Leaf Springs:

-Mono-leaf/single leaf Springs

-Multi-leaf Springs

-Leaf Spring Ends

-Double-eye Leaf Springs

This type of spring has top plates that have their ends curved into a circle. The ends make two holes that you can hook up to your trailer's bottom frame. This type of leaf spring is recommended only for medium utility duty application (less than 7,000 lbs).
-One-eye Leaf Spring

This type of spring only has one "eye" or open hole, with its other side coming in the form of either a hook end or a flat end. This type of spring is highly beneficial because it requires you to maintain only one mounting point, and it can withstand light to heavy duty loads.

-Radius End Slipper Trailer Leaf Springs

Flat End Slipper Trailer Leaf Springs