Is spring steel stronger than mild steel?
"Spring steel" is a generic term for steel that has been processed, usually but not always by cold working, to achieve a really high yield strength. Hence it will be able to resist "taking a set" when you load it heavily- or at least more so, by a wide margin, than mild steel.
Supply Form & Size
Form of Supply | Size(mm) | Length(mm) |
Round bar | 6.0mm-1200mm | 2.5m-10m |
Chemical Composition&Related Specifications
Grade | C | Si | Mn | S | P |
9260 | 0.56~0.64 | 1.80~2.20 | 0.75~1.00 | ≤0.040 | ≤0.035 |
Brand comparison table
AISI/SAE | DIN/EN | BS | JIS/KS | China |
9260 | 61SiCr7(1.7108) | 61SiCr7(1.7108) | SUP6,SUP7 | 60Si2Mn |
Mechanical Property
tensile strength σb (MPa) | ≥1274(130) |
yield strength σs (MPa | ≥1176(120) |
elongation δ5 (%) | ≥5 |
Reduction of area ψ (%) | ≥25 |
hardness | hot-rolling≤321HB; Cold drawing+heat treatment≤321HB |