51CRV4 Spring Steel Flat Bar

• Customization: Available
• Technique: Hot Rolled
• Standard: JIS, ASTM, GB
• Model NO.: 51CrV4 Spring Steel Flat Bar
• Transport Package: Bare in Bundles
• Specification: 5155, 55Cr3, 55CrMnA, SUP9, SUP9 Leaf Spring Bar
• Trademark: YONG YANG
• Origin: China
• HS Code: 722830
• Production Capacity: 20000ton/Month

Product Description

Our products includes:

Spring Steel, high carbon steel flat bar, mild carbon steel, cutting steel
 

Product Name	high carbon hot-rolled spring steel
high carbon steel flat barMaterial	SAE 9260/60Si2Mn/SUP6/SUP7 SUP9/SUP9A/SAE5160/SAE5160H/55Cr3/51CrV4/50CrV4 EN45/S45C/30CrMnB5/27MnCrB
Heat Treatment	Hot rolled/hot rolling
Standard	DIN GB ISO JIS ASTM SAE
Grade	Sae5160, sae 5160h, sae6150, sae9260
Width	50mm-130mm
Thickness	5mm-30mm
Application	Leaf Springs, Suspension, Agricultural Implement/harvester blades, rotary blades, tiller blades, cutting blades, Mining, Furniture, tools

1.Description

Spring steel refers to steel due to the elasticity in the quenched and tempered condition, and specifically for the manufacture of springs and elastic components. Spring steel depends on its ability to elastically deform, i.e., within the prescribed range, the ability to withstand a certain elastic deformation so that the load does not occur in the permanent deformation after the load is removed.

Back to Top

2.Application

Spring steel flat bars are widely used on auto fittings, auto manufacturing, hardware tools, chain manufacturing and other machinery manufacturing industry.  Automobile plate spring

Back to Top

3.Size Ranges

Width: 40mm-150mm; Thickness: 4mm-60mm

Back to Top

4.All Grades Comparison

GB	ASTM	JIS	ISO	DIN	BS	ANFR	GOST
65#	1065	/	TypeDC,SC	CK67	060A67	XC65	65
70#	1070	/	TypeDC,SC	/	070A72	XC70	70
85#	1086	SUP3	TypeDC,SC	CK85	060A86	XC85	85
65Mn	1066	/	/	/	080A67	/	65Γ
60Si2Mn	9260	SUP6,SUP7	61SiCr7	60SiCr7	Z51A60	60Si7	60C2
60Si2CrA	9254	SUP12	55SiCr63	/	/	/	60C2XA
55CrMnA	5155	SUP9	55Cr3	55Cr3	525A58	55Cr3	/
60CrMnBA	51B60	SUP11A	60CrB3	/	/	/	55XΓP
60CrMnMoA	4161	SUP13A	60CrMo33	60CrMo4	705A60	/	/
50CrVA	6150	SUP10A	51CrV4	50CrV4	735A51	51CrV4	50CrΦA

Back to Top

5.Quality Standard

GB/T 1222 Spring Steels
JIS G 4801 Spring Steels
EN 10089 Hot rolled steels for quenched and tempered springs

Back to Top

6.Chemical Composition(%)

Steel Grade	C	Mn	Si	P	S	Cr	Ni	B	Cu	Mo	V
65#	0.62-0.70	0.50-0.80	0.17-0.37	0.035 max	0.035 max	0.25 max	0.25 max	/	0.25 max	/	/
70#	0.62-0.75	0.50-0.80	0.17-0.37	0.035 max	0.035 max	0.25 max	0.25 max	/	0.25 max	/	/
85#	0.82-0.90	0.50-0.80	0.17-0.37	0.035 max	0.035 max	0.25 max	0.25 max	/	0.25 max	/	/
65Mn	0.62-0.70	0.90-1.20	0.17-0.37	0.035 max	0.035 max	0.25 max	0.25 max	/	0.25 max	/	/
60Si2Mn	0.56-0.64	0.70-1.00	1.50-2.00	0.035 max	0.035 max	0.35 max	0.25 max	/	0.25 max	/	/
60Si2CrA	0.56-0.64	0.40-0.70	1.40-1.80	0.025 max	0.025 max	0.70-1.00	0.25 max	/	0.25 max	/	/
55CrMnA	0.52-0.60	0.65-0.95	0.17-0.37	0.025 max	0.025 max	0.65-0.95	0.35 max	/	0.25 max	/	/
60CrMnBA	0.56-0.64	0.70-1.00	0.17-0.37	0.025 max	0.025 max	0.70-1.00	0.35 max	0.0005-0.0040	0.25 max	/	/
60CrMnMoA	0.56-0.64	0.70-1.00	0.17-0.37	0.025 max	0.025 max	0.70-0.90	0.35 max	/	0.25 max	0.25-0.35	/
50CrVA	0.46-0.54	0.50-0.80	0.17-0.37	0.025 max	0.025 max	0.80-1.10	0.35 max	/	0.25 max	/	0.10-0.20

Back to Top

7.Mechanical Properties(Quenched and Tempered Condition)(T=20°C if not differently stated)

Steel Grade	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation A5 (%)	Area Reduction Ratio C (%)
65#	980 min	785 min	9 min	35 min
70#	1030 min	835 min	8 min	30 min
85#	1130 min	980 min	6 min	30 min
65Mn	980 min	785 min	8 min	30 min
60Si2Mn	1275 min	1180 min	5 min	25 min
60Si2CrA	1765 min	1570 min	6 min	20 min
55CrMnA	1225 min	1080 min	9 min	20 min
60CrMnBA	1225 min	1080 min	9 min	20 min
50CrVA/td>	1275 min	1130 min	10 min	40 min

Back to Top

8.Heat Treatment

Steel Grade	Quenching Temperature (°C) (	Media	Tempering Temperature (°C)
65#	840	oil	500
70#	830	oil	480
85#	820	oil	480
65Mn	830	oil	540
60Si2Mn	870	oil	480
60Si2CrA	870	oil	420
55CrMnA	830-860	oil	460-510
60CrMnBA	830-860	oil	460-520
50CrVA	850	oil	500