优特钢棒材产品一览表 Quality and Special Steel Round Bars List
| 序号 No | 钢种大类 Category | 典型牌号 Grade | 规格/mm Sizes | 执行标准 Specifications / Standards | 主要用途 Application |
| 1 | 优质碳素结构钢 High quality carbon structural steel | 20～45 50Mn A105 S20Ti C45E C45R C45RCr S45Cr S45Ti | φ20～350 | GB/T 699 JIS G4051 技术协议 Technical protocol | 用于制作机械、液压、机床、船舶、起重设备等的轴、连杆、曲轴、曲柄销、齿轮、轧辊、回转支承、阀体等。 Used to make shafts, connecting rods, crankshafts, crankpins, gears, rolls, slewing bearings and valve bodies of machinery, hydraulic pressure, machine tools, ships, lifting equipment ,etc. |
| 2 | 低合金高强度钢 Low alloy high strength steel | Q355 LF2 S355J2 | Ф20～350 | GB/T 1591 EN 10025 EN 10021 技术协议 Technical protocol | 用于制作机械零件、齿轮轴、热作模具、阀体、压力容器、辊套等。 Used to make mechanical parts, gear shaft, hot work mold, valve body, pressure vessel, roller sleeve, etc. |
| 3 | 合金结构钢 Structural alloy Steel | 20～45Mn2 20～45Cr 15～42CrMo 37CrMnMo 40CrMnMo 38CrMoAl 20～40CrNiMo SCM415～440 SNCM431 42～50CrMo4 AISI4130 AISI4140 AISI4137H AISI4145H AISI4340 AISI8630 LF6 | Ф20～350 | GB/T 3077 JIS G4053 ISO 643 ASTM A29 技术协议 Technical protocol | 用于制作矿山机械、工程机械、石油机械、液压、机床、汽车、起重设备等的轴、齿轮、连接件、结构件。 Used to make shafts, gears, connectors and structural parts of mining machinery, engineering machinery, petroleum machinery， hydraulic pressure, machine tools, automobiles, lifting equipment, etc. |
| 4 | 管坯钢 Tube billet steel | 20G SA106B/C 15CrMoG 25CrMo 27CrMo-F 27CrMo44 29CrMoVNb 30CrMo 12Cr1MoVG 12Cr5Mo T11 T22 WB36 15Ni1MnMoNbCu T5 10Cr9Mo1VNbN T91 | Ф20～350 | YB/T 5137 GB 5310 YB/T 5221 API 5CT 技术协议 | 用于制作石油开采、天然气传输、火力发电等工业领域的钢管。 Used to make steel pipes for oil exploitation, natural gas transmission, thermal power generation and other industrial fields. |
| 5 | 磨球钢 Grinding ball steel | B2 B3 S550A S550C S650A S-704 S-901 R25 XK5062 XK5095 X2K5170 XK51105 X3K5140H | Ф20～120 | 技术协议 Technical protocol | 用于制作冶金、矿山、水泥等领域的磨球。 Used to make grinding balls in metallurgy, mining, cement and other fields. |
| 6 | 齿轮钢 Gear steel | 20CrMnTiH 20CrMnMoH 22CrMoH 16-28MnCr5 18CrNiMo7-6 17CrNiMo6 SCM420H SAE8620 | Ф20～350 | GB/T 5216 ISO 683-3 EN 10084 ASTM A304 技术协议 Technical protocol | 用于制作汽车、风电、机械行业的齿轮零部件。 Used to make gear parts of automobile, wind power and various machinery industries. |
| 7 | 轴承钢 Bearing steel | GCr15 GCr15SiMn 100Cr6 SAE52100 | Ф20～200 | GB/T 18254 技术协议 Technical protocol | 用于制作汽车、风电、机械行业的齿轮零部件。 Used to make Rolling elements and rings. |
| 8 | 非调质钢 Non quenched and tempered steel | C38+N2 38MnVS6 49MnVS3 HDFT45 45MnSiVSQ HY4520 YG1401 | Ф20～260 | 技术协议 Technical protocol | 用于制作机械设备活塞杆、拉杆、推杆、注塑机拉杆（哥林柱）及汽车曲轴、半轴等机械零件。 Used to make manufacture mechanical equipment piston rod, pull rod, push rod, injection molding machine pull rod (Colin column) and automobile crankshaft, halfshaft, etc machine parts. |
| 9 | 车轴钢 Axle steel | LZ50 EA1N AAR M-101F | 230*230 250*250 280*280 | TB/T 2945 EN 13261 AAR M-101 技术协议 Technical protocol | 用于制作铁路货车、铁路客车、地铁、轻轨等轨道交通车辆的车轴。 Used to make axles of railway passenger and freight cars, subways, light rail and other rail transit vehicles. |
| 10 | 工程机械用钢 Steel for engineering machinery | 35MnB 40Mn2 40CrBM 15B35Cr | Ф20～180 | 技术协议 Technical protocol | 用于制作工程机械的链轨节、销轴、销套、支撑轮。 Used To make the chain link, pin shaft, pin sleeve and support wheel of construction machinery. |
优特钢棒材产品一览表 Quality and Special Steel Round Bars Application
