S460 | High Strength Structural Steel
S460 | High Strength Structural Steel
S460 is a high-strength structural steel with a minimum yield strength of 460 MPa. The “S” denotes structural, while “460” indicates its yield strength. Equivalent grades include A572 Grade 65, SM570, SM520, SS540. Known for its excellent strength, toughness, and weldability, the S460 is ideal for construction, bridges, heavy machinery, and large structures. We offer S460N/NL products in 6–200mm thickness per EN 10025-3, S460M/ML in 6–120mm per EN 10025-4, and S460Q/QL1/QL2 in 6–150mm per EN 10025-6.
Description
What is S460 Steel?
S460 is a high-strength structural steel with about 98% iron and small amounts of carbon, manganese, and silicon. It is a weldable fine-grain steel, classified into S460N (normalized), S460M (thermo-mechanically rolled), and S460QL/QL1 (quenched and tempered), it offers excellent strength, toughness, and weldability. S460 is widely used in construction, bridges, machinery, harsh environments like offshore structures, and large structures requiring high strength and durability.Characteristics of S460 Steel
S460 steel offers high strength, toughness, weldability, and reliable performance in harsh environments. It withstands heavy loads, making it ideal for construction, bridges, offshore platforms, heavy machinery, large structures, and high-rise buildings. Its fine-grain structure enhances impact resistance. For higher strength or extreme conditions, grades like S690, S890, or Q690 are alternatives.Chemical Compositions
| Element | Content (%) |
|---|---|
| Iron, Fe | Balance |
| Carbon, C | 0.12 – 0.20 |
| Manganese, Mn | 1.00 – 1.60 |
| Silicon, Si | ≤ 0.60 |
| Phosphorus, P | ≤ 0.025 |
| Sulfur, S | ≤ 0.015 |
| Chromium, Cr | ≤ 0.30 |
| Nickel, Ni | ≤ 0.70 |
| Molybdenum, Mo | ≤ 0.10 |
| Vanadium, V | ≤ 0.12 |
| Copper, Cu | ≤ 0.55 |
Physical Properties
| Property | Metric | Imperial |
|---|---|---|
| Density | 7850 kg/m³ | 490 lb/ft³ |
| Melting Point | 1425-1540 °C | 2600-2800 °F |
| Boiling Point | / | / |
| Thermal Conductivity | 43 W/m·K | 25 BTU·in/(h·ft²·°F) |
| Electrical Conductivity | 1.0 x 10^6 S/m | 1.0 x 10^6 S/m |
| Specific Heat Capacity | 460 J/kg·K | 0.11 BTU/lb·°F |
| Thermal Expansion Coefficient | 12 x 10^-6/K | 6.7 x 10^-6/°F |
| Electrical Resistivity | 1.0 x 10^-6 Ω·m | 1.0 x 10^-6 Ω·m |
Mechanical Properties
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 460 MPa | 67,000 psi |
| Yield Strength | 350 MPa | 51,000 psi |
| Brinell Hardness | HB 175 | HB 175 |
| Rockwell Hardness | HRC 35 | HRC 35 |
| Vickers Hardness | HV 165 | HV 165 |
| Elongation | 20% | 20% |
| Elastic Modulus | 210 GPa | 30,500,000 psi |
Data After QT(Quenching and Tempering) Processing
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 650 – 780 MPa | 94,000 – 113,000 psi |
| Yield Strength | 520 – 600 MPa | 75,000 – 87,000 psi |
| Brinell Hardness | 220 – 280 HB | 220 – 280 HB |
| Rockwell Hardness | HRC 40 – 45 | HRC 40 – 45 |
| Vickers Hardness | 210 – 260 HV | 210 – 260 HV |
| Elongation | 15 – 18% | 15 – 18% |
| Elastic Modulus | 210 GPa | 30,500,000 psi |
Industries & Applications
| Industries | Products |
|---|---|
| Construction | Beams, Columns, Plates, Frames, Reinforcements |
| Automotive | Chassis, Axles, Suspension Components, Frames, Body Panels |
| Shipbuilding | Hull Structures, Decks, Bulkheads, Frames, Tanks |
| Energy | Wind Turbine Towers, Offshore Structures, Pipelines, Supports, Frames |
| Machinery Manufacturing | Machine Frames, Conveyor Systems, Tooling, Cranes, Lifting Equipment |
| Railways | Rail Tracks, Rolling Stock, Support Structures, Bridges, Signaling Equipment |
Machining
S460 Heat Treatment
S460 Surface Finish
- Galvanizing: Provides corrosion resistance by coating the steel with zinc.
- Painting: Enhances aesthetics and adds a protective layer against environmental factors.
- Powder Coating: Offers a durable, decorative finish that resists chipping, fading, and scratching.
- Shot Blasting: Cleans the surface and improves adhesion for subsequent coatings.
- Anodizing: Increases corrosion resistance and surface hardness (more common for aluminum but can apply to some steel alloys).
- Pickling: Removes oxides and scale, preparing the surface for further treatment or coating.
Custom surface treatment requirements can be accommodated upon request.
Disclaimer
The above heat treatment instructions and surface finish processing methods for S460 steel are provided for informational purposes only. Actual results may vary based on specific conditions and equipment used. Testing is recommended, and a metallurgical expert or material supplier should be consulted to ensure the processes are suitable for your specific application. The user assumes all risks and liability for the use of this information.
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