Flat spring steel (shees, strips, bars)

Choose the desired thickness:

Those products are flat spring steel with a thickness of less than 3 or 4 mm:

carbon spring steel strip (annealed)
Material C75S/C85S+LC
Standard tensile strengths 490-640 N/mm²
Dimensions From 0,05 mm thickness to max. 4 x 200 mm
If you need wider Dimensions maybe 75Cr1 is an alternative
Product Strips and sheets
Optional: round Edges

 

carbon spring steel strip (hardened & tempered)
Material C75S/C85S+QT
Standard tensile strengths 1320-1520 N/mm²
1570-1770 N/mm²
not that common but possible:
1100-1300 N/mm² and further ranges
Dimensions From 0,02 mm thickness to max. 3 x 230 mm and 4 x 30 mm
If you need wider Dimensions maybe 75Cr1 is an alternative
Product Strips and sheets
Optional: round Edges

 

spring steel strip (stainless)
Material 1.4310 (X10CrNi18-8)
Standard tensile strengths 1100-1300 N/mm²
1300-1500 N/mm²
1500-1700 N/mm²
Dimensions From 0,05 mm thickness to max. 3 x 300 mm
Product Strips and sheets
Optional: round Edges

Those products are flat spring steel with a thickness of more than 3 mm:

Spring bar steel (hot rolled)
Material Code 56Si7 (previous: 55Si7)
Properties hot rolled (covered in scale)
standard tensile strengths 900-1100 N/mm²
Dimensions 4 x 20 mm to 20 x 150 mm
Form flat bars of a length of 5-6 m
tool steel (low alloyed) - 75Cr1
Material 75Cr1
Properties Similar to C75S +QT und +LC
Hardening grades:

1. Hot rolled, annealed (+AC)
Dimensions
Thickness: 1,80-8,30 mm
Width: 310-2010 mm
Length: 895-2080 mm


This version can be offered as "afterwards hardened", too.

2. Cold rolled, bright hardened and tempered (75Cr1+QT)
Dimensions
Thickness: 1-4,2 mm
Width: 210-710 mm
Length: max. 2500 mm
Available are two different Hardnesses:
42-44 HRC and 48-50 HRC


Conversion of hardness into tensile strength

 

Product Blanks/Sheets