EN10219 S275J2H ERW Pipe
EN10219 S275J2H ERW Pipe - Structural Hollow Section Steel Grade
Comprehensive material data for EN10219 S275J2H ERW pipe, including chemical composition, mechanical and thermal properties, equivalent standards, and application guidance.
Cold forming, electric resistance welding (ERW), cutting, bending, drilling, welding, coating
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EN10219 S275J2H ERW Pipe Introduction
S275J2H is a cold-formed welded structural hollow section steel grade specified in European standard EN 10219. The designation indicates a minimum yield strength of 275 MPa, with Charpy impact test requirement at -20 °C (J2) and hollow profile (H). This non-alloy quality steel is mainly supplied in circular, square or rectangular shapes produced by electric resistance welding (ERW). It offers a good balance of strength, weldability and toughness, making it widely used in construction, machinery and general structural engineering. The delivery condition is typically as-welded, with options for normalizing or stress relieving upon agreement. Equivalent grades are limited, but similar performance materials exist worldwide.
EN10219 S275J2H ERW Pipe Chemical Composition
The chemical composition of S275J2H is defined in EN 10219-1. It is a non-alloy steel with control over main elements to ensure weldability and mechanical properties. The values below are maximum percentages unless otherwise noted.
| Element | Standard Value | Remarks |
|---|---|---|
| C | ≤ 0.20 | Carbon equivalent (CEV) may be calculated for weldability |
| Si | ≤ 0.55 | |
| Mn | ≤ 1.60 | Higher Mn improves strength and toughness |
| P | ≤ 0.035 | Phosphorus – impurity limit |
| S | ≤ 0.035 | Sulfur – impurity limit |
| Cu | ≤ 0.55 | May be present from copper content of scrap |
| N | ≤ 0.012 | Nitrogen limit |
| Others | Ni, Cr, Mo, etc. permitted up to 0.30 each, total ≤ 1.0 | Not intentionally added; residual elements |
EN10219 S275J2H ERW Pipe Thermal and Electrical Physical Properties
Physical properties are not explicitly required by EN 10219 but are typical for low-carbon structural steels. These values can be used for design calculations and simulations.
| Property | Typical Value | Unit | Conditions / Remarks |
|---|---|---|---|
| Density (ρ) | 7850 | kg/m³ | At 20 °C |
| Modulus of Elasticity (E) | 210 | GPa | At 20 °C |
| Shear Modulus (G) | 81 | GPa | At 20 °C |
| Poisson's Ratio (ν) | 0.3 | Dimensionless | |
| Thermal Expansion Coefficient (α) | 12 x 10⁻⁶ | K⁻¹ | 20 – 100 °C |
| Thermal Conductivity (λ) | 50 | W/(m·K) | At 20 °C |
| Specific Heat Capacity (c) | 460 | J/(kg·K) | At 20 °C |
| Electrical Resistivity (ρ_e) | 0.14 | Ω·mm²/m | At 20 °C |
EN10219 S275J2H ERW Pipe Mechanical Properties
The mechanical properties are according to EN 10219-1 for wall thicknesses up to 40 mm. Values may be affected by section size and edge condition. Impact test temperature is -20 °C for the J2 quality designation.
Notes: ReH = upper yield strength for hollow sections, Rm = tensile strength, A = elongation on gauge length 5.65√S0 (A5) for longitudinal test pieces.
| Property | Standard Requirement | Unit | Test Conditions / Remarks |
|---|---|---|---|
| Yield Strength (ReH) | ≥ 275 | MPa | t ≤ 16 mm |
| Yield Strength (ReH) | ≥ 265 | MPa | 16 < t ≤ 40 mm |
| Tensile Strength (Rm) | 370 – 530 | MPa | t ≤ 40 mm |
| Elongation (A) | ≥ 24 | % | Longitudinal, t ≤ 40 mm |
| Elongation (A) | ≥ 22 | % | Transverse, t ≤ 40 mm |
| Charpy Impact (KV) at -20 °C | ≥ 27 | J | Longitudinal, min. average of 3 tests |
| Bending Test (180°) | No cracks | Core diameter ≤ 2t (t ≤ 16 mm); 3t (t > 16 mm) |
EN10219 S275J2H ERW Pipe Directly Equivalent Standard Grades and Possible Replacements
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10219 | S275J2H | Original designation – cold-formed welded hollow section |
| Europe | EN 10210 | S275J2H | Hot-finished structural hollow section; similar chemistry and mechanicals, but delivery condition differs |
| International | ISO 630-3 | S275H | Comparable but impact properties may not match J2; check requirements |
EN10219 S275J2H ERW Pipe Application Introduction
S275J2H ERW pipes are versatile and can be used in a wide range of structural and mechanical applications. Thanks to its guaranteed impact toughness at -20 °C, it is especially suited for outdoor and cold-climate structures. Typical processing includes welding, cutting, drilling, and hot-dip galvanizing.
Product Applications: Columns, beams, and trusses for steel buildings, Framework for exhibition stands and stages, Scaffolding and falsework, Lighting poles and telecommunication towers, Fencing, guard rails, and handrails, Greenhouse frames and irrigation systems, Conveyor rollers and machine frames, Air conditioning ducts (rectangular sections)
Processed into products: Structural hollow section profiles cut to length, Welded joints and fabricated assemblies, Punched or drilled connection plates, Bent tube sections for arches or curves, Threaded pipe ends for coupling, Galvanized pipe for corrosion protection, Bolted and welded end plates
Application industries: Building and construction, Civil engineering and infrastructure, Mechanical and plant engineering, Agricultural machinery, Renewable energy (wind turbine structures), Transportation and automotive, Steel furniture and storage systems
EN10219 S275J2H ERW Pipe Similar or Substitute Material Recommendations
The following grades offer comparable mechanical properties but may differ in toughness requirements, delivery condition, or dimensional tolerances. Suitable for engineering adjustment.
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| USA | ASTM A500 | Grade B | Yield 290 MPa, tensile 400 MPa; no -20 °C impact guarantee; can be an economical alternative for non-fracture-critical applications. |
| China | GB/T 6728 | Q275B | Yield ≥275 MPa, tensile 410-560 MPa; impact at +20 °C (B class); requires careful evaluation for low-temperature use. |
| Japan | JIS G 3466 | STKR400 | Yield ≥245 MPa, tensile 400-510 MPa; only for general structural tubing, lower strength and toughness. |
| India | IS 4923 | YST 310 | Yield ≥310 MPa, tensile ≥440 MPa; higher strength, no specified Charpy impact; suitable as substitute where toughness is not critical. |
| Germany (historic) | DIN 17119 / DIN 2395 | St 44-2 | Non-standard now; 275 MPa yield approx., formerly used for hollow sections; newly fabricated projects should use EN 10219 grades. |
Notes:
Ordering Information: When ordering S275J2H ERW pipe, specify EN 10219-1/-2, dimensions, length, and if any special requirement (e.g., coating, normalized). CEV (carbon equivalent) is often limited to 0.40% for weldability. Dimensional tolerances conform to EN 10219-2. NDT testing may be agreed upon for critical applications. Custom lengths and certifications like 3.1 according to EN 10204 are available.
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