JIS G 3106 SM400-570(ABCYAYB) wind turbine tower steel plate
JIS G 3106 SM400-570 (ABCYAYB) plates are carbon steel materials used in wind turbine tower construction. We offer certified industrial supply.
1. High Strength and Superior Weldability
2.Multiple Grade Options with Custom Thicknesses
3.Fully Compliant with JIS and International Specifications
JIS G 3106 SM400-570(ABCYAYB) wind turbine tower steel description
We are a leading China-based manufacturer and bulk exporter of JIS G 3106 SM400A, SM400B, SM400C, SM490YA, and SM490YB steel plates, specially designed for wind turbine tower construction. Our high-strength, low-alloy structural steel plates offer excellent weldability, impact toughness, and fatigue resistance, making them ideal for renewable energy applications.
Key Features:
Grades Available: SM400A, SM400B, SM400C, SM490YA, SM490YB
Thickness Range: 6mm to 120mm (custom sizes available)
Standards Compliance: JIS G 3106 (Japanese Industrial Standard)
Applications: Wind turbine towers, structural supports, heavy machinery, and construction
Our SM400/SM490 series plates ensure superior performance in extreme weather conditions, meeting the stringent demands of wind energy projects. Suitable for EPC contractors, fabricators, and OEMs, we provide mill-certified plates with guaranteed mechanical properties.
JIS G 3106 SM400-570(ABCYAYB)-Chemical Composition/Tensile Requirements
| JIS G 3106 SM400-570(ABCYAYB) Chemical Composition | ||||||
| Grade | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Other Requirements |
| SM400A | 0.30% | 0.35% | – | 0.05% | 0.05% | – |
| SM400B | 0.30% | 0.35% | – | 0.04% | 0.04% | – |
| SM400C | 0.25% | 0.35% | 0.60% | 0.04% | 0.04% | – |
| SM490A | 0.30% | 0.55% | 1.60% | 0.05% | 0.05% | – |
| SM490B | 0.30% | 0.55% | 1.60% | 0.04% | 0.04% | – |
| SM490C | 0.25% | 0.55% | 1.60% | 0.04% | 0.04% | – |
| SM490YA | 0.20% | 0.55% | 1.60% | 0.05% | 0.05% | CE ≤ 0.38% (Carbon Equivalent) |
| SM490YB | 0.20% | 0.55% | 1.60% | 0.04% | 0.04% | CE ≤ 0.38% (Carbon Equivalent) |
| SM570 | 0.30% | 0.55% | 1.60% | 0.04% | 0.04% | CE ≤ 0.44% (Carbon Equivalent) |
| JIS G 3106 SM400-570(ABCYAYB) – Tensile Requirements | ||||
| Grade | Yield Strength (min) | Tensile Strength (MPa) | Elongation (min) | Impact Test (Optional) |
| SM400A | 245 MPa | 400–510 MPa | 17% (t ≤ 16mm) | Not required |
| SM400B | 245 MPa | 400–510 MPa | 17% (t ≤ 16mm) | Not required |
| SM400C | 235 MPa | 400–510 MPa | 21% (t ≤ 16mm) | Required (Charpy V-notch, 0°C) |
| SM490A | 325 MPa | 490–610 MPa | 17% (t ≤ 16mm) | Not required |
| SM490B | 325 MPa | 490–610 MPa | 17% (t ≤ 16mm) | Not required |
| SM490C | 315 MPa | 490–610 MPa | 21% (t ≤ 16mm) | Required (Charpy V-notch, 0°C) |
| SM490YA | 365 MPa | 490–610 MPa | 17% (t ≤ 16mm) | Required (Charpy V-notch, 0°C) |
| SM490YB | 365 MPa | 490–610 MPa | 17% (t ≤ 16mm) | Required (Charpy V-notch, 0°C) |
| SM570 | 460 MPa | 570–720 MPa | 16% (t ≤ 16mm) | Required (Charpy V-notch, 0°C) |
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JIS G 3106 SM400-570(ABCYAYB) wind turbine tower steel Application
JIS G 3106 SM400-570 (A/B/C/YA/YB) steel plates are extensively used in wind energy infrastructure, particularly for fabricating tower sections, flanges, and transition pieces due to their high strength, structural stability, and weather resistance. In onshore wind farms, SM490YA/YB grades are preferred for their excellent low-temperature toughness in cold climates, while SM570 plates provide load-bearing capacity for taller towers. Offshore turbine projects utilize SM400C and SM490C for their corrosion resistance in harsh marine environments. These plates also serve in substations, nacelle frames, and offshore platform supports, meeting strict welding and fatigue performance requirements. Their reliability in dynamic wind loads and seismic conditions makes them a top choice for EPC contractors and renewable energy manufacturers globally.
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