China Hight Quality High Hardness Strut 20# A36 Q195 Q235D Q345b S355jr Carbon Steel Round Bars

1.Material: CK45, 1020, 1045, C45, Q235-Q345, 20Cr-40Cr, 20Mn-65Mn, 15CrMo-42CrMo, 20Mn2-40Mn2
2.Tech: forged, hot rolled, cold rolled, cold drawn
3.Application: automotive engine or conveying
4.Material: 20Cr-40Cr, 20Mn-65Mn, 15CrMo-42CrMo, 20Mn2-40Mn2, Q195-Q345

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(1) Low carbon steel Also known as mild steel, carbon content from 0.10% to 0.30% low carbon steel is easy to accept a variety of processing such as forging, welding and cutting, commonly used in the manufacture of chains, rivets, bolts, shafts and so on.

(2)Medium carbon steel Carbon steel with a carbon content of 0.25% to 0.60%. There are a variety of products such as killed steel, semi-killed steel, boiling steel. In addition to carbon, it may contain a small amount of manganese (0.70% to 1.20%).

(3) High carbon steel Often referred to as tool steel, carbon content from 0.60% to 1.70%, can be hardened and tempered. Hammers, crowbars,etc. are made of steel with a carbon content of 0.75%; cutting tools such as drill bits, wire taps, reamers, etc. are made of
steel with a carbon content of 0.90% to 1.00%.
Product Paramenters
CategoryGradeDiameterStandard
High speed steel6542,M2,M35,M421mm-600mmGB/T3077-1999
Mold steelCr12,Cr12MoV,Cr12Mo1V1,D2,SKD11,DC531mm-600mmGB/T3077-1999
Carbon structure steelQ195, Q215, Q235, Q2751mm-600mmGB/T700-2006
Low alloy high strength structure steelQ295, Q345, Q390, Q420, Q4601mm-600mmGB/T1591-2006
Prime Carbon structure steel10#, 20#, 35#, 45#, 60#, 20Mn, 65Mn, B2, B3, JM20, SH45,S45C, C451mm-600mmGB/T699-1999
Alloy structure steel30Mn2, 40Mn2, 27SiMn, 42Crmo,20Cr, 40Cr, 20CrMo, 35CrMo, 20CrMnTi, 30CrMnTi,20MnVB, 20MnTiB, 20CrNiMo, Q345B, 35MnBM,
40MnB,36Mn2V, 45MnV,		1mm-600mmGB/T3077-1999
Spring Steel65Mn, 60Si2Mn, 50CrVA1mm-600mmGB/T1222-2002
Bearing SteelGCr15, GCr15GD,55SiMoV1mm-600mmGB/T18254-2002
Structural steels subject to end-quench hardenability requirements20CrMnTi, 30CrMnTi, 20Cr, 40Cr, 30CrMo, 42CrMoA, 27SiMn, 40Mn2H, 20CrNiMo, 40Mn2, q345b, 35MnBM, 40MnB,45MnV.1mm-600mmGB/T5216-2002

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