30MnCrB5 hot rolled steel flat for blade and coulter We are Tianjin Daqiang Steel Co.,Ltd. We are the leading factory of hot rolled steel flat bar in North China. We're making production for spring steel, alloy steel and carbon steel. We're exporting hot rolled flat steel to over 22 countries.
Type: round angle, right angle, double groove, single groove, T shape.
Specification: 4mm x 40mm - 35mm x 150mm
Dimension: Thickness 4mm - 35mm, Width 40mm - 150mm, Length 3m - 6m.
Carbon Steel, especially for 45# / C45 / S45C / 1045
Complex alloy steel, especially for EN10083-3: 2006, grade 30MnCrB5
China Standard GB/T1222-2007, Grade 65Mn, 55Si2Mn, 60Si2Mn, 55CrMnA, 60CrMnA, 50CrVA
Japan Standard JIS G4801-2005, Grade SUP6, SUP7, SUP9, SUP9A, SUP10A, SUS11
Germany Standard DIN17221-1988, Grade 60Si7, 55Si7, 55Cr3, 50CrV4, 51CrV4
American Standard ASTM A322, Grade SAE1066, SAE1070, SAE5155, SAE5160, SAE6150, SAE9255, SAE9260
European Standard EN10089-2002
| Grade | C | Si | Mn | P | S | Cr | B | Ni | Cu |
| 27MnCrB5 | 0.24-0.30 | ≤0.40 | 1.10-1.40 | ≤0.035 | ≤0.035 | 0.30-0.60 | 0.001-0.003 | ≤0.20 | ≤0.20 |
| 30MnCrB5 | 0.30-0.35 | ≤0.40 | 1.10-1.40 | ≤0.035 | ≤0.035 | 0.40-0.70 | 0.001-0.003 | ≤0.20 | ≤0.20 |