56Si7 Hot Rolled Spring Steel Flat Bar

Categories	Spring Steel Flat Bars
Brand	fushun
Model	56Si7
Width	40-160mm
Thickness	6-30mm
Delivery Condition	Hot rolled only, Quenched and Tempered
Surface Condition	Black surface
FOB port	Tianjin port,China
Terms of Payment	L/C, D/A, D/P, T/T
Update Time	Apr 30,2025

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Detail Information

Products Details

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.Spring steel flat bar is especially used for laminated leaf spring,Agricultural machinery springs,Chain products.

Quality Standard

BS EN 10089-2002 Hot rolled steels for quenched and tempered springs

Chemical Composition(%)

Steel Grade	C	Si	Mn	P	S
56Si7	0.52-0.60	1.60-2.00	0.60-0.90	0.025 max	0.025 max

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 (%)
56Si7	1275 min	1180 min	5 min	25 min

Heat Treatment

Steel Grade	Quenching Temperature (°C)	Media	Tempering Temperature (°C)
56Si7	870	oil	480