Flat Spring Steel
Flat spring steel is a high-strength, flexible steel strip designed for applications requiring elastic deformation and fatigue resistance. It is widely used in manufacturing springs, clamps, clips, and other components that require repeated bending or load-bearing capacity. This material combines excellent toughness, wear resistance, and high yield strength to ensure long-lasting performance in demanding environments.
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Product Description

Specifications

Parameter

Description / Range

Material Grades

65Mn, 60Si2Mn, 55SiCr, SUP9, SAE1070, SAE1095

Standard

GB/T 4354, ASTM A228, DIN EN 10089

Shape

Flat strip / rectangular cross-section

Width

5mm – 100mm (customizable)

Thickness

0.3mm – 10mm (customizable)

Hardness

HRC 45 – 55 (after quenching & tempering)

Tensile Strength

1200 – 1800 MPa

Surface Finish

Polished, Black, Pickled

Length

1m – 6m (standard) or customized

Heat Treatment

Quenching + Tempering

Certification

ISO 9001, SGS


Applications:

  • Automotive suspension springs

  • Industrial machinery components

  • Agricultural equipment

  • Electrical contacts and clips

  • Precision mechanical devices


Features:

  • High elasticity and fatigue resistance

  • Excellent wear and abrasion resistance

  • Precise dimensions for easy processing

  • Suitable for repeated bending and load-bearing applications


Spring Flat Steel Product Display

flat bar


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