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Home  >  Cold drawn steel  >  Bearing steel
Product Details
Product Name: Supply of quality, 65MN spring steel in Suzhou delivery, cash on delivery outside the cities, manufa
Product Type: Supply of quality, 65MN spring steel in Suzhou delivery, cash on delivery outside the cities, manufacturers sell 8 yuan / kg
Product Brand: Japan sus Series U.S. Series Swedish series Baosteel, Changcheng Special Steel Guiyang Steel
On a:
Under a: GCR15 bearing steel
Product Description  

Features and Scope:
After the hardening heat treatment and cold drawing, a high strength, toughness and plasticity certain; surface in the same state and a fully hardenability, the fatigue limit of the alloy spring considerable. But poor hardenability, mainly for the smaller size of the spring, such as voltage control spring force of the spring, usually circular machinery, or pull into a square coil spring steel wire for springs on small machines.
● Chemical Composition:
Carbon C: 0.62 ~ 0.70
Si Si: 0.17 ~ 0.37
Mn Mn: 0.50 ~ 0.80
Sulfur S: ≤0.035
Phosphorus P: ≤0.035
Chromium Cr: ≤0.25
Ni Ni: ≤0.25
Copper Cu: ≤0.25
● Mechanical Properties:
Tensile strength σb (MPa): ≥980 (100)
Yield strength σs (MPa): ≥784 (80)
Elongation δ10 (%): ≥9
Reduction of ψ (%): ≥35
Hardness: hot, ≤285HB; Cold Drawn + heat ≤321HB
● Heat treatment and microstructure specifications:
Heat treatment specifications: quenching 840 ℃ ± 20 ℃, oil cooling; tempering 500 ℃ ± 50 ℃ (when the special needs of ± 30 ℃).
● Delivery status: hot-rolled steel to heat treatment or heat treatment delivery, cold drawn steel to heat treatment delivery.

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GCR15 bearing steel
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