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No. 20 round steel belongs to high-quality low-carbon carbon steel, cold-extruded, carburized and hardened steel.
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9SiCr hot rolled steel round bars
9 sicr steel is low alloy cutting steel, but also often make cold work mould parts, the effect is very good. It than chrome steel (Cr2 or 9 Cr2) have higher hardenability and hardenability and have high tempering stability. The steel quotations from the former Soviet union as early as 9 xc, once known as 9 crsi steel. Composition and performance with 9 xc are exactly the same.
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20CrMnMo hot rolled steel round bars
Carbon C: 0.17 ~ 0.23
Si Si: 1.17 ~ 1.37
Mn Mn: 0.90 ~ 1.20
Sulfur S: to allow the residual content ≤0.035
Phosphorus P: to allow the residual content ≤0.035
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Si Si: 1.17 ~ 1.37
Mn Mn: 0.90 ~ 1.20
Sulfur S: to allow the residual content ≤0.035
Phosphorus P: to allow the residual content ≤0.035
60Si2Mn hot rolled steel round bars
60Si2Mn spring steel is a widely used silico-manganese spring steel with slightly higher strength, elasticity and hardenability than 55Si2Mn. GB 60SI2MN Steel is a high quality Alloy Spring Steel, It belong to the high quality high carbon alloy Spring Steel. Quenched & Tempered Hardness is 28-34 HRc. 60SI2MN steel Annealing delivery hardenss less than 250HB.
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GCr15 hot rolled steel round bars
GCr15 is a common steel which is used to produce balls and rings of bearing.GB GCr15 bearing steel is GB standard Alloy Bearing steel, It belong to the high quality high carbon, alloy chromium,manganese steel.
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27SiMn hot rolled steel round bars
GB standard material 27SiMn belongs to the China, from the steel to the finished product, we have the perfect technology and many years of accumulation of experience, we can now produce products include steel coil, sheet, plate,round bar, square steel, steel wire, steel pipe, forgings, other...
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