GB/T11251 1345 Alloy Structural Steel Coil
Classification :
PRODUCT DETAILS
GB/T11251 1345 is a national standard hot-rolled alloy structural steel coil, belonging to medium carbon manganese steel. It has high strength, high wear resistance, high hardenability, moderate cold deformation plasticity, good machinability, and little decrease in toughness after heat treatment. It can still maintain high toughness under water cooling conditions, but it has the tendency to be sensitive to overheating, white spot, and temper brittleness.
Product parameters
| Product name | Production process | Material standards | Width | length | Thickness |
| GB/T11251 1345 alloy structural steel coil | Hot rolling, cold rolling | GB/T 11251-2020, and also complies with international standards such as AISI, ASTM, DIN, EN, and JIS | 45mm-2200mm | Customized size, regular 3000mm-12000mm | 4mm-200mm (hot rolled), ≤12mm (cold rolled) |
| EN 10083-3 4135 Alloy Structural Steel Coil | Hot rolling, cold rolling, annealing, normalizing + quenching and tempering | EN 10083-3:2006, and also complies with ASTM A29, GB/T 3077, JIS G4053 and other standards | 1000mm-1800mm, can be customized | 3000mm-12000mm, customized size | 5mm-100mm |
| EN 10083-3 4140 Alloy Structural Steel Coil | Hot rolling, cold rolling, annealing, quenching and tempering | EN 10083-3:2006, and also complies with international standards such as ASTM A29, GB/T 3077, JIS G4053 | 1000mm-1800mm, can be customized | 3000mm-12000mm, customized size | 5mm-100mm |
| EN 10083-3 4142 Alloy Structural Steel Coil | Hot rolling, cold rolling, annealing, normalizing + quenching and tempering | EN 10083-3:2006, and also complies with ASTM A29, GB/T 3077, JIS G4053 and other standards | 1000mm-1800mm, can be customized | 3000mm-12000mm, customized size | 5mm-100mm |
| EN 10083-3 6150 Alloy Structural Steel Coil | Hot rolling, cold rolling, annealing, quenching + medium temperature tempering | EN 10083-3:2006, and also complies with ASTM A29, GB/T 1222, JIS G4053 and other standards | 1000mm-1800mm, can be customized | 3000mm-12000mm, customized size | 5mm-80mm |
Material Standards
| Product name | Surface technology | chemical composition | Application scope | Equivalent material |
| GB/T11251 1345 alloy structural steel coil | Hot rolled black leather, pickled white and bright, cold rolled bright and polished | C:0.43-0.48%, Si:0.15-0.35%, Mn:1.60-1.90%, P:≤0.035%, S:≤0.040% | Bearings, gears, rotating machinery transmission parts, automobile universal joint shafts, axles, connecting rods, high-strength bolts, wear-resistant mechanical parts | AISI 1345, SAE 1345, GB/T 45Mn2, JIS SCM440, DIN 1.7225 |
| EN 10083-3 4135 Alloy Structural Steel Coil | Hot rolled black skin, pickling passivation, cold rolling finishing, sand blasting | C:0.33-0.38%, Mn:0.70-0.90%, Si:0.15-0.35%, Cr:0.80-1.10%, Mo:0.15-0.25%, P:≤0.035%, S:≤0.040% | Heavy machinery drive shafts, turbine blades, gears, bolts, nuts, spindles, oil drilling tools, pressure vessel components | AISI 4135, 34CrMo4 (EN 10083-3), GB/T 35CrMo, JIS SCM435, DIN 34CrMo4 |
| EN 10083-3 4140 Alloy Structural Steel Coil | Hot-rolled black leather, pickled white and bright, cold-rolled bright, polished, sandblasted | C:0.38-0.43%, Mn:0.75-1.00%, Si:0.15-0.35%, Cr:0.80-1.10%, Mo:0.15-0.25%, P:≤0.035%, S:≤0.040% | Auto parts, engineering machinery, mining machinery, gears, shaft parts, high-strength bolts, pressure vessels, military equipment, mold accessories | AISI 4140, 42CrMo4 (EN 10083-3), GB/T 42CrMo, JIS SCM440, DIN 42CrMo4 |
| EN 10083-3 4142 Alloy Structural Steel Coil | Hot-rolled black leather, pickling and passivation, cold-rolled finishing, sandblasting, and polishing | C:0.40-0.45%, Mn:0.75-1.00%, Si:0.15-0.35%, Cr:0.80-1.10%, Mo:0.15-0.25%, B:0.001-0.005%, P:≤0.035%, S:≤0.040% | High-load gears, heavy-duty drive shafts, bolts, nuts, spindles, oil drilling pipe joints, fishing tools, bending dies, high-strength components of engineering machinery | AISI 4142, 42CrMoS4 (EN 10083-3), GB/T 40CrMnMo, JIS SCM440, DIN 1.7225 |
| EN 10083-3 6150 Alloy Structural Steel Coil | Hot rolled black leather, pickled white and bright, cold rolled bright, polished, oxidized | C:0.48-0.53%, Mn:0.70-0.90%, Si:0.15-0.40%, Cr:0.80-1.10%, V:0.15-0.25%, P:≤0.035%, S:≤0.040% | Springs, gears, pinions, shaft parts, pins, bolts, hand tools, high-strength components of engineering machinery, automotive suspension system components | AISI 6150, 51CrV4 (EN 10083-3), GB/T 50CrVA, JIS SUP10, DIN 51CrV4 |
Customer Praise
All products comply with global mainstream standards: API 5L/5CT, ASTM A106/A53/A335, EN 10216, ISO 3183, JIS and GB standards. Complete MTC and third-party inspection certificates are available.
APPLICATION FIELD
Agricultural Machinery
Aerospace
Shipbuilding
Bridge
Oil pipeline
Chemical industry
Steel structure
Architecture
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