A105 hot rolled steel round bars

ASTM A105 (also known as ASME SA 105) covers seamless forged carbon steel piping components for use in pressure systems at ambient and high-temperature service.
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20MnCr5 hot rolled steel round bars

20MnCr5 steel is a low alloyed engineering case hardening steel for parts which require core tensile strength of 1000 – 1300 N/mm² and good wearing resistance. This steel is carburising steel used for components requiring high wear resistance surface, coupled with tough cores to resist shock loads and strength to give large service life.
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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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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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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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CrWMn hot rolled steel round bars

CrWMn die steel plate is alloy tool steel, oil quenching low deformation cold working die steel.The steel wearability
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