EN10219 S460MH SHS/RSH Pipe
EN10219 S460MH SHS/RSH Pipe: High-Strength Thermomechanical Rolled Hollow Sections
Detailed material data page for S460MH cold-formed welded structural hollow sections according to EN 10219, featuring chemical composition & mechanical properties for rigorous structural design.
Cold-forming, High-frequency welding, SAW welding, Cutting, Drilling, Machining, Welding, Coating
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EN10219 S460MH SHS/RSH Pipe Introduction
EN10219 S460MH SHS/RSH pipe refers to cold-formed welded structural hollow sections (Square Hollow Sections and Rectangular Hollow Sections) manufactured from thermomechanically rolled steel (grade S460MH) under the European standard EN 10219-1. This grade achieves its high minimum yield strength of 460 MPa through a controlled rolling process with accelerated cooling rather than through heat treatment, resulting in excellent weldability and toughness. It is designed for high-load-bearing structures where weight reduction and material strength are critical. The "M" designation signifies thermomechanical rolling, while "H" specifies hollow sections. It offers a balanced combination of high strength, good ductility, and low-temperature impact resistance, making it suitable for demanding structural applications.
EN10219 S460MH SHS/RSH Pipe Chemical Composition per EN 10219-1
The chemical composition for S460MH is strictly controlled to ensure structural integrity and weldability. It features a low Carbon Equivalent Value (CEV) to prevent cold cracking during welding. Niobium, Vanadium, and Titanium are added as micro-alloying elements for grain refinement and precipitation strengthening.
| Element | Standard Value (%) | Remarks |
|---|---|---|
| Carbon (C) | ≤ 0.16 | Max |
| Silicon (Si) | ≤ 0.60 | Max |
| Manganese (Mn) | ≤ 1.70 | Max |
| Phosphorus (P) | ≤ 0.030 | Max |
| Sulfur (S) | ≤ 0.025 | Max |
| Niobium (Nb) | ≤ 0.05 | Max |
| Vanadium (V) | ≤ 0.12 | Max |
| Aluminium (Al total) | ≥ 0.020 | Minimum |
| Titanium (Ti) | ≤ 0.05 | Max |
| Chromium (Cr) | ≤ 0.30 | Max |
| Nickel (Ni) | ≤ 0.80 | Max |
| Molybdenum (Mo) | ≤ 0.20 | Max |
| Copper (Cu) | ≤ 0.55 | Max |
| Nitrogen (N) | ≤ 0.025 | Max |
| CEV (Carbon Equivalent) | ≤ 0.45 / ≤ 0.47 | t ≤ 16 mm / 16 < t ≤ 40 mm |
EN10219 S460MH SHS/RSH Pipe Thermal and Electrical Physical Properties
The following physical properties are typical reference values for S460 grade structural steels at ambient temperature and can be used for general engineering calculations. Thermal properties may vary slightly depending on the exact chemical composition and manufacturing parameters.
| Property | Standard Value | Unit | Test Condition |
|---|---|---|---|
| Density (ρ) | ~7850 | kg/m³ | Ambient temperature |
| Modulus of Elasticity (E) | ~210 | GPa | Ambient temperature |
| Shear Modulus (G) | ~81 | GPa | Calculated |
| Poisson's Ratio (ν) | ~0.3 | - | Ambient temperature |
| Thermal Expansion (α) | ~12.0 | 10⁻⁶/K | 20-100°C |
| Thermal Conductivity (λ) | ~42 | W/m·K | Ambient temperature |
| Specific Heat Capacity (c) | ~460 | J/kg·K | Ambient temperature |
| Electrical Resistivity (ρ_e) | ~0.22 | Ω·mm²/m | Ambient temperature |
EN10219 S460MH SHS/RSH Pipe Mechanical Properties per EN 10219-1
The mechanical properties listed below apply to testing carried out in the longitudinal direction on base material taken from the finished hollow section. S460MH pipes exhibit high yield and tensile strength coupled with excellent toughness at low temperatures (0°C), ensuring reliable performance under dynamic loading and extreme environmental conditions.
| Property | Standard Value | Unit | Test Condition |
|---|---|---|---|
| Yield Strength (ReH) | ≥ 460 | MPa | t ≤ 16 mm |
| Yield Strength (ReH) | ≥ 440 | MPa | 16 < t ≤ 40 mm |
| Yield Strength (ReH) | ≥ 400 | MPa | 40 < t ≤ 65 mm |
| Tensile Strength (Rm) | 540 - 720 | MPa | t ≤ 16 mm |
| Tensile Strength (Rm) | 530 - 710 | MPa | 16 < t ≤ 40 mm |
| Tensile Strength (Rm) | 500 - 680 | MPa | 40 < t ≤ 65 mm |
| Elongation (A) | ≥ 17 | % | Longitudinal, t ≤ 16 mm |
| Elongation (A) | ≥ 17 | % | Longitudinal, 16 < t ≤ 40 mm |
| Elongation (A) | ≥ 17 | % | Longitudinal, 40 < t ≤ 65 mm |
| Impact Energy (KV) | ≥ 27 | J | 0°C, Longitudinal |
EN10219 S460MH SHS/RSH Pipe Direct Equivalent Materials and Substitute Grades
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10219-1 | S460MH | Original designation (Thermomechanical rolled, Hollow sections) |
| International | ISO 10799-2 | S460MH | Identical technical delivery requirements |
| United Kingdom | BS EN 10219-1 | S460MH | British adoption of the European standard |
| Germany | DIN EN 10219-1 | S460MH | German adoption of the European standard |
| France | NF EN 10219-1 | S460MH | French adoption of the European standard |
EN10219 S460MH SHS/RSH Pipe Application Introduction
S460MH SHS/RHS pipes are specifically engineered for load-bearing structural components where weight savings and high strength are paramount. Their excellent weldability and cold-formability allow for complex geometries. They are ideally suited for both static and dynamic loads in aggressive environments when properly coated.
Key application sectors include:
- Architectural and civil engineering structures (stadiums, airports, high-rise frames)
- Heavy-duty machinery and lifting equipment (crane booms, telescopic handlers)
- Energy infrastructure (wind turbine towers, solar panel supports)
- Maritime and offshore engineering (jack-up rig legs, piles)
- Transportation (heavy vehicle chassis, trailer frames)
Product Applications: High-rise building structural columns, Long-span bridge trusses and box girders, Industrial crane booms and lattice masts, Wind turbine tower internals and transition pieces, Offshore platform structural legs and bracings
Processed into products: Telescopic boom sections for mobile cranes, Space frame nodes and connectors, Structural bracings for seismic retrofitting, Piled foundations for river/sea dolphins, Heavy-duty shelving and racking uprights, Railway bogie frames
Application industries: Construction & Civil Engineering, Heavy Machinery & Crane Manufacturing, Renewable Energy (Wind/Solar), Shipbuilding & Offshore Platforms, Automotive & Heavy Transport
EN10219 S460MH SHS/RSH Pipe Similar/Approximate Equivalent Materials from Other Standards
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10025-4 | S460M/ML | Base plate/flat steel equivalent. Not a hollow section but identical chemical/mechanical basis. |
| USA | ASTM A500 / A501 | Grade C / 65 | Similar yield strength (345-450 MPa) for welded structural tubing. S460MH has higher guaranteed toughness. |
| Japan | JIS G 3466 | STKR490 | Square and rectangular hollow sections with comparable tensile strength (490-610 MPa). |
| China | GB/T 1591 | Q460D | High-strength low-alloy structural steel with similar chemical composition and tensile properties, but usually supplied as plate/strip. |
| India | IS 4923 | Yst 460 | Hollow sections for structural use with minimum yield strength of 460 MPa. |
Notes:
Welding Considerations: Due to the low Carbon Equivalent Value (CEV ≤ 0.45/0.47), S460MH exhibits excellent weldability using standard methods such as MIG/MAG, TIG, or manual arc welding without excessive preheating.
Delivery Documentation: Typically supplied with Inspection Certificate 3.1 per EN 10204, including traceable heat analysis and mechanical test results. Dimensional tolerances comply with EN 10219-2.
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