GB/T11251 1345 Alloy Structural Steel Coil
Prime Mill Grade | Certified China Exporter & Factory Direct Supply
GB/T11251 1345 Alloy Structural Steel Coil - Technical Overview & Specifications
GB/T 11251 alloy steel is one of the common hot-rolled alloy structural steel coils. GB/T 11251 Hot-rolled coil has high strength and wear resistance, high hardenability, moderate cold deformation plasticity, good cutting performance and good welding performance. During the heat treatment, the toughness of the steel decreases less. GB/T 11251 alloy steel can still maintain high toughness under water cooling conditions, but it has a tendency of overheating sensitivity, white spot sensitivity and temper brittleness.
Product Parameters
| Product Name | GB/T11251 1345 Alloy Structural Steel Coil |
| Production Process | Hot Rolling, Cold Rolling |
| Material Standards | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, etc. |
| Width | 45mm-2200mm |
| Length | Custom Size |
| Thickness | Hot Rolling: 2.75mm-100mm Cold Rolling: 0.2mm-3mm |
| Delivery Conditions | Rolling, Annealing, Quenching, Tempered or Standard |
| Surface Process | Ordinary, Wire Drawing, Laminated Film |
Mechanical Properties
| Brand | Yield Strength MPa min. | Elongation min.% |
|---|---|---|
| 45Mn2 | 600 | 13 |
| 27SiMn | 550 | 18 |
| 40B | 500 | 20 |
| 45B | 550 | 18 |
| 50B | 550 | 16 |
International Standard Grade Comparison
| China | United States | Germany | Japan | France |
|---|---|---|---|---|
| 45Mn2 | 1345 | 46Mn7 | SMn3 | 45M5 |
| 27SiMn | - | 27MnSi5 | - | |
| 40B | 14B35 | 35B2 | - | - |
| 45B | 50B46H | 45B2 | - | - |
| 50B | 14B50 | - | - | - |
Product Features & Advantages
- Manufactured to ASTM, AISI, JIS, GB, DIN, EN, etc. with strict dimensional tolerance and surface quality
- Reliable Carbon Steel Coil solution for construction, machinery and industrial projects
- Custom processing available: cutting, bending, decoiling, slitting and surface polishing
- Mill Test Certificate (MTC) and full inspection provided
Applications & Industries
Customer Reviews & Mill Quality Audits
Overall Satisfaction from Global EPC & Steel Buyers
EN 10204 3.1 Chemical & Tensile Verification Passed
SGS, BV & Cotecna Third-Party Audits Supported
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