DIN 17102 StE460 Hot Rolled Coil
DIN 17102 StE460 Hot Rolled Coil | Fine-Grain Weldable Structural Steel - Properties & Equivalents
Comprehensive data sheet for DIN 17102 StE460 hot rolled steel coil: chemical composition, mechanical and physical properties, international equivalents, applications and processing recommendations.
Hot rolling, normalizing or normalizing rolling, thermomechanical rolling (by agreement); suitable for cold forming, welding, flame cutting, machining
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DIN 17102 StE460 Hot Rolled Coil Introduction
StE460 according to DIN 17102 is a hot-rolled, weldable, fine-grain structural steel with a minimum yield strength of 460 MPa in the as‑delivered condition (normalized or normalized rolled). The fine grain structure, achieved by aluminium and optionally microalloying elements (Nb, V, Ti), ensures good toughness at low temperatures and excellent weldability. This steel grade is primarily used for welded structures in civil engineering, bridge building, crane construction and pressure vessels. The material is typically supplied as hot rolled coils, sheets or plates in thicknesses up to approx. 100 mm. The delivery condition is normalised or normalised rolled, guaranteeing uniform mechanical properties across the thickness. Thanks to its balanced chemical composition and controlled rolling practices, StE460 offers a favourable combination of high strength, good formability and reliable impact behaviour, making it a cost‑effective alternative to conventional S355 structural steels.
DIN 17102 StE460 Hot Rolled Coil Chemical Composition
The following table gives the standard chemical composition for StE460 according to DIN 17102. Elements like Nb, V, Ti are added optionally to achieve the required fine grain structure and mechanical properties. Their maximum contents are not explicitly fixed in the standard but are controlled by the producer. The minimum total aluminium content guarantees a fine grain. Low carbon and impurity levels (S, P) ensure good weldability and toughness.
| Element | Specified Value (max. or range) | Remarks |
|---|---|---|
| C | ≤ 0.20 | |
| Si | ≤ 0.50 | |
| Mn | 1.00 – 1.70 | |
| P | ≤ 0.035 | |
| S | ≤ 0.030 | |
| Al (total) | ≥ 0.020 | Fine grain practice |
| N | ≤ 0.020 | |
| Nb | optional, typ. ≤ 0.05 | Added for grain refinement |
| V | optional, typ. ≤ 0.10 | |
| Ti | optional, typ. ≤ 0.05 |
DIN 17102 StE460 Hot Rolled Coil Thermal and Electrical Physical Properties
The following physical data are reference values for steel with approximate density of 7.85 g/cm³. They are not part of the DIN 17102 specification but serve as useful design guidance. Properties may vary slightly with temperature and exact chemical composition. Values are given at room temperature unless indicated otherwise.
| Property | Typical value | Unit | Test / Reference condition |
|---|---|---|---|
| Density (ρ) | 7.85 | g/cm³ | 20 °C |
| Modulus of elasticity (E) | 210 | GPa | Tensile, 20 °C |
| Shear modulus (G) | ≈ 81 | GPa | Calculated from E and ν |
| Poisson's ratio (ν) | 0.3 | – | |
| Thermal expansion coefficient (α) | 12.0 × 10⁻⁶ | K⁻¹ | 20 – 100 °C |
| Thermal conductivity (λ) | 50 | W/(m·K) | At 20 °C |
| Specific heat capacity (cp) | 460 | J/(kg·K) | Around 20 °C |
| Electrical resistivity (ρe) | 0.22 | µΩ·m | 20 °C |
DIN 17102 StE460 Hot Rolled Coil Mechanical Properties
The mechanical properties refer to the normalized (N) condition. Values are guaranteed in the longitudinal direction. The impact energy is verified on Charpy‑V specimens at –20 °C (optional –40 °C for NL grades, subject to agreement). Bend test requires no cracks after 180° bending. Data compiled from DIN 17102 requirements.
| Property | Standard minimum / range | Unit | Test condition / Remarks |
|---|---|---|---|
| Yield strength ReH | 460 | MPa | Thickness ≤ 16 mm |
| Yield strength ReH | 450 | MPa | Thickness > 16 ≤ 35 mm |
| Yield strength ReH | 430 | MPa | Thickness > 35 ≤ 50 mm |
| Yield strength ReH | 410 | MPa | Thickness > 50 ≤ 70 mm |
| Tensile strength Rm | 530 – 720 | MPa | All thicknesses (t ≤ 100 mm) |
| Elongation A5 | 18 | % | Gauge length 5.65√S₀ (proportional) |
| Bend test (bending angle 180°) | d = 3 t (thickness ≤ 16 mm) | – | No cracks; d = mandrel diameter, t = specimen thickness |
| Bend test (bending angle 180°) | d = 4 t (thickness > 16 mm) | – | No cracks |
| Charpy impact energy KV (longitudinal) | 40 | J | At –20 °C (typical for StE460, N condition) |
| Charpy impact energy KV (transverse) | 27 | J | At –20 °C (typical minimum) |
DIN 17102 StE460 Hot Rolled Coil Full Equivalent Materials – Direct Replacements
| Region / Country | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10025‑3 | S460N | Normalized / normalized rolled; fully replaces StE460 N |
| Europe | EN 10025‑4 | S460M | Thermomechanically rolled; comparable to StE460 TM |
| Europe (withdrawn) | EN 10113‑3 | S460N | Predecessor of EN 10025‑3 |
| International | ISO 4950‑3 | S460N | Normalized condition, similar to StE460 |
DIN 17102 StE460 Hot Rolled Coil Application Introduction
StE460 hot rolled steel is designed for heavy-duty welded structures where high strength and low-temperature toughness are essential. It is widely used in civil engineering and mechanical fabrication. The normalized delivery condition ensures homogeneous properties that facilitate reliable processing (cutting, welding, forming).
Product Applications: Welded bridge girders and box sections, Offshore platform substructures, Telescopic crane booms, Heavy transport vehicle frames, Wind turbine towers and foundations, Industrial pressure tanks
Processed into products: Main beams and columns of steel buildings, Stiffened panels for ship hulls, Flanges and web plates in bridge construction, Support brackets and mounting plates, Welded pipe segments and elbows, Hydraulic cylinder components
Application industries: Bridge construction, Offshore and marine engineering, Pressure vessels and storage tanks, Crane and lifting equipment, Mining and earth-moving machinery, Building frameworks and structural steelwork
DIN 17102 StE460 Hot Rolled Coil Similar / Closely Related Materials for Consideration
| Region / Country | Standard | Grade | Remarks |
|---|---|---|---|
| China | GB/T 1591 | Q460D | Min. yield 460 MPa, -20 °C impact 34 J; different delivery condition |
| USA | ASTM A572 | Grade 65 [450] | Yield strength 450 MPa, similar weldable structural steel, but lower strength |
| Japan | JIS G 3106 | SM570 | Yield ≥ 460 MPa, weldable rolled steel for welded structures |
| UK (withdrawn) | BS 4360 | Grade 55EE | Former British fine-grain steel, yield 450–550 MPa; equivalent to StE460 |
Notes:
- Thickness tolerances and surface finish are according to DIN EN 10051 for hot rolled wide strip.
- For improved atmospheric corrosion resistance a higher alloyed variant (weathering steel) is not covered by this grade.
- When ordering, the designation "StE460 N" indicates normalized delivery, "StE460 TM" indicates thermomechanical rolling; the suffix must be agreed with the supplier.
- Welding procedures should follow established guidelines such as EN 1011. Low hydrogen consumables are recommended.
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