Industrial Extension Springs
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Extension springs are coil springs designed to withstand axial tensile forces. When they are unloaded, each coil is close to the next. Extension springs can be applied in fitness equipment, garage doors, shock absorbers, and other mechanical components.
We can customize extension springs in different diameters according to customer demands, the diameter of which can range from 2mm to 20mm.
Springs applied into fitness equipmentOptional materials:
Stainless steel, piano steel, high-carbon steel, phosphorous copper, oil-tempered alloyed spring steel, etc.
Performance parameters for 70#steel extension spring:
Hardening temperature 830℃
Tempering temperature 480℃
Quenching medium: oil
Tensile strength ≥1029MPA
Yield strength ≥833MPA
Reduction of area ≥30%
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