Alloy steel structure
Core application scenarios:
Automotive: automotive transmission gears, drive shafts, crankshafts, connecting rods, and steering knuckles; railway axles.
Heavy machinery: rolling mill gears, large electric motor spindles, excavator bucket teeth, crane hooks, and structural components.
Energy and Power: Steam turbine main shafts, oil‑field perforating guns, high‑pressure boiler bolts, and pressure vessel nozzles.
General-purpose components: high-strength bolts, nuts, splined shafts, camshafts, and wear-resistant spindles.
Commonly stocked grades: SCM415H, SCM435H, SCM440H, 8620H, 16MnCr5, 42CrMo4 15CrMo, 20CrMoH, S20CF, SS400, S45CL, ...
Steel mills: Japan’s Daido, Japan’s JFE, Northeast Special Steel, Baosteel, Jiangyin Xingcheng, Fushun Steel, Shijiazhuang Iron & Steel
Automotive: automotive transmission gears, drive shafts, crankshafts, connecting rods, and steering knuckles; railway axles.
Heavy machinery: rolling mill gears, large electric motor spindles, excavator bucket teeth, crane hooks, and structural components.
Energy and Power: Steam turbine main shafts, oil‑field perforating guns, high‑pressure boiler bolts, and pressure vessel nozzles.
General-purpose components: high-strength bolts, nuts, splined shafts, camshafts, and wear-resistant spindles.
Commonly stocked grades: SCM415H, SCM435H, SCM440H, 8620H, 16MnCr5, 42CrMo4 15CrMo, 20CrMoH, S20CF, SS400, S45CL, ...
Steel mills: Japan’s Daido, Japan’s JFE, Northeast Special Steel, Baosteel, Jiangyin Xingcheng, Fushun Steel, Shijiazhuang Iron & Steel
Keywords:
Alloy steel structure
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Product Description
Mainstream Material Series
| Low-alloy high-strength structural steel (commonly used) Representative grades: Q355B / Q355D, S355JR/J0/J2 Characteristics: high strength, good weldability, and excellent cost-effectiveness; Grade D is suitable for low-temperature service conditions. Applications: Steel structures for industrial plants, equipment bases, platform walkways, and support trusses. |
Chromium-molybdenum alloy high-strength steel (for heavy-load extreme operating conditions) Representative: 42CrMo and 15CrMo series components (welded / forged fittings) Properties: high strength, excellent hardenability, resistance to high-temperature creep, and fatigue resistance. Applications: heavy-duty hinged supports, high-temperature equipment frames, and load-bearing joints of large machinery. Yield Strength: ≥355 MPa (standard high-strength) / Customized with enhanced wear resistance Tensile strength: mainstream range of 470–630 MPa Low-Temperature Impact: -20°C / -40°C V-notch impact (Grade D, mandatory for extreme cold environments) Weldability: Low crack sensitivity, suitable for field assembly. Corrosion protection grade: C2/C3 for standard applications; C4/C5 for heavy marine corrosion resistance—customizable. Tolerance requirements: Length, end-face flatness, and perpendicularity shall comply with GB/T 10947 and the Code for Acceptance of Steel Structure Engineering. |
| Wear-resistant alloy structural steel Representative: NM450/NM500 wear-resistant plate + alloy profile combination Features: impact and abrasion resistance, cut‑resistant wear performance, and a service life far exceeding that of standard carbon steel. Applications: silo liners, chutes, crusher frames, and steel structures for mine discharge systems. |
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