DIN 17100 St50-2 Steel Plate | St50-2 Structural Steel
What is DIN 17100 St50-2 Steel Plate?
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present DIN 17100 St50-2 Steel Plate.
St50-2 is a non-alloy structural steel under the former German standard DIN 17100. It provides a minimum yield strength of 295 MPa (for thickness ≤ 16 mm) and a tensile strength range of 490–660 MPa. This grade sits between the St44 and St52 series in terms of strength and is still requested in many markets that continue to use the old DIN designation. It offers a good combination of strength, formability and weldability.
This grade belongs to the DIN 17100 Steel Plate series. SHH STEEL supplies St50-2 as Mill Direct Supply, sourcing directly from major Chinese steel mills. This ensures competitive mill pricing, consistent quality, shorter lead times and full traceability. We offer thicknesses from 6 mm to 150 mm, widths up to 3000–4000 mm and lengths up to 12000–18000 mm. Custom cutting, shot blasting and priming services are available. All plates are delivered with full Mill Test Certificates (EN 10204 3.1 or equivalent).
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | DIN 17100 | Full compliance |
| Steel Grade | St50-2 (1.0050) | Confirmed |
| Delivery Condition | As-rolled / Normalized | Available |
| Product Form | Steel Plate | Available |
| Thickness Range | 6 mm – 150 mm | Custom sizes available |
| Width / Length | Up to 3000–4000 mm / 12000–18000 mm | Custom cutting supported |
| Certification | EN 10204 3.1 / Mill Certificate | Available |
Chemical Composition
Chemical composition according to DIN 17100 (typical values):
| Element | Ladle Analysis (Max. %) | Product Analysis (Max. %) |
|---|---|---|
| Carbon (C) | ≤ 0.20 | ≤ 0.22 |
| Silicon (Si) | ≤ 0.55 | ≤ 0.60 |
| Manganese (Mn) | ≤ 1.60 | ≤ 1.70 |
| Phosphorus (P) | ≤ 0.045 – 0.050 | ≤ 0.055 |
| Sulfur (S) | ≤ 0.045 – 0.050 | ≤ 0.055 |
| Nitrogen (N) | ≤ 0.009 | ≤ 0.010 |
Note: Controlled carbon and manganese contents provide a good balance of strength and weldability.
Mechanical Properties
Mechanical properties of DIN 17100 St50-2:
| Thickness (mm) | Yield Strength ReH (min) | Tensile Strength Rm | Elongation A (min) |
|---|---|---|---|
| ≤ 16 | 295 MPa | 490 – 660 MPa | 20% |
| > 16 ≤ 40 | 285 MPa | 490 – 660 MPa | 19% |
| > 40 ≤ 63 | 275 MPa | 490 – 660 MPa | 18% |
| > 63 ≤ 100 | 265 MPa | 490 – 660 MPa | 17% |
| > 100 ≤ 150 | 255 MPa | 470 – 610 MPa | 16% |
Density: 7.85 g/cm³ Impact Test: Typically 27 J at +20°C (when required).
Delivery Conditions
SHH STEEL supplies DIN 17100 St50-2 steel plate as Mill Direct Supply in as-rolled or normalized condition according to customer requirements.
Additional options available:
- Shot blasting and shop primer
- Ultrasonic testing (EN 10160 or equivalent)
- Z-direction testing (Z15 / Z25 / Z35)
- Third-party inspection (SGS, BV, TUV, etc.)
Tolerances
Dimensional tolerances for St50-2 steel plate follow DIN standards or equivalent international standards (EN 10029 / ASTM A6).
- Thickness, width and length tolerances according to the ordered class.
- Flatness according to applicable standard.
- Edge conditions: Mill edge or cut edge (flame / plasma).
Tighter tolerances can be provided upon request.
Weldability
St50-2 has good weldability. It can be welded by all conventional methods (SMAW, GMAW, FCAW, SAW) when proper procedures are followed.
Recommended welding consumables:
| Welding Process | Recommended Consumables |
|---|---|
| SMAW (Stick) | E7018, E8018 |
| GMAW (MIG/MAG) | ER70S-6, ER80S-D2 |
| FCAW | E71T-1, E81T1 |
| SAW | EM12K / EH14 + suitable flux |
Preheating may be required for thicker plates. Low-hydrogen consumables are recommended.
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| St50-2 | DIN 17100 | — |
| 1.0050 | DIN / EN | Material number |
| S355JR | EN 10025-2 | Approximate modern European equivalent |
| Q345B | GB/T 1591 | Closest Chinese equivalent |
| ASTM A572 Grade 50 | ASTM | Approximate American equivalent |
| SM490A | JIS G3106 | Approximate Japanese grade |
Applications
DIN 17100 St50-2 is widely used in structural and engineering applications requiring moderate-to-high strength. Typical uses include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Building Structures | Beams, columns, frames – St50-2 Structural Steel |
| Bridges | Secondary and main members – St50-2 Bridge |
| Machinery | Heavy frames, supports – St50-2 Machinery |
| Containers & Storage | Tanks, containers – St50-2 Container |
| General Fabrication | Welded structures – St50-2 Fabrication |
| Construction | Structural parts – St50-2 Construction |
Why Choose SHH STEEL
SHH STEEL provides St50-2 as Mill Direct Supply. We maintain long-term strategic cooperation with major Chinese steel mills and act as a first-level (primary) agent. This direct mill supply model allows us to offer competitive mill-direct pricing, faster delivery times, stable and traceable quality, and full Mill Test Certificates for DIN 17100 St50-2 Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective solutions for structural steel projects worldwide. Our professional export team provides technical support and customized processing services to meet project requirements.
FAQ
- What is the strength level of St50-2?St50-2 has a minimum yield strength of 295 MPa (≤16 mm) and tensile strength of 490–660 MPa, higher than St44 grades but generally lower than St52-3.
- Is St50-2 equivalent to S355JR?Yes, St50-2 is commonly considered an approximate equivalent to EN 10025-2 S355JR.
Conclusion
DIN 17100 St50-2 Steel Plate from SHH STEEL is a reliable structural steel offering 295 MPa minimum yield strength, good weldability and formability. As Mill Direct Supply, we provide competitive pricing, consistent quality and full technical support. Trust SHH STEEL for your St50-2 steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. DIN 17100 St50-2 Steel Plate, St50-2 steel plate, St50-2, St50-2 Structural Steel, St50-2 supplier, St50-2 equivalent
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