What Is S500MC High Tensile Steel Plates?
S500MC is a high-strength steel plate, the "S" stands for structural, indicating that this steel is mainly used in structural and building applications. The "500" in S500MC represents the minimum yield strength of the steel in megapascals (MPa).
If you are satisfied with our S500MC Low Alloy High-Strength Structural Steel, welcome to place an order with us. As one of the best High Tensile Strength Steel Plate manufacturers and suppliers in China, we have a large number of hot-selling products for you to choose from. For detailed chemical composition and free samples, please contact our factory immediately. We provide competitive prices and good services.
Key Characteristics of S500MC
- Excellent Cold Formability Elongation ≥ 17%; the mandrel diameter for 180° bending ≤ 2t with controllable springback.
- High Strength-to-Weight Ratio Minimum yield strength reaches 500 MPa, enabling a weight reduction of 20%~30% under equivalent load-bearing conditions.
- Low Welding Cost Carbon Equivalent Value (CEV) ≤ 0.39%. Preheating is unnecessary for most plate thicknesses, cutting down the consumption of welding consumables.
- High Material Utilization Rate Elevated allowable stress delivers an overall material saving of approximately 5%~8% during blanking processes.
- Outstanding Fatigue Resistance Fatigue limit stands at roughly 350 MPa (at 2×10⁶ cycles), ideal for applications subjected to alternating dynamic loads.
- Compatible with Laser Cutting Heat-affected zone (HAZ) less than 0.3 mm, featuring fast cutting speed and superior kerf quality.
- Superior Bending Performance Minimum bending diameter of 1.5t; Charpy impact toughness ≥ 40 J at -20 ℃, ensuring no cracking occurs during cold bending.

S500MC high strength alloy steel chemical composition
| Grade | C | Si | Mn | P | S | Al (min) | Nb | V | Ti | Mo | B |
| S500MC | 0.12 | 0.50 | 1.70 | 0.025 | 0.015 | 0.015 | 0.09 | 0.20 | 0.15 | - | - |
S500MC hSLA structural steel Mechanical property
| Grade | Yield (MPa) | Tensile (MPa) | Elongation | |
| < 3mm | ≥ 3mm | |||
|---|---|---|---|---|
| S500MC | ≥ 500MPa | 550-700MPa | ≥ 12% | ≥ 14% |
S500MC Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN 10149-2 | S500MC |
| DIN | QStE500TM |
| China | QStE500TM(Approx.) |
| ASTM | No direct equivalent |
| JIS | Approx. SAPH590 |
S500MC low alloy steel plates weight chart
| Theoretical Weight | Thickness(mm) | Theoretical Weight | ||
| Kg/m2 | Kg/ft2 | Kg/ft2 | Kg/m2 | |
| 9.420 | 0.875 | 1.2 | 5.470 | 58.875 |
| 6.280 | 0.583 | 0.80 | 4.011 | 43.175 |
| 5.888 | 0.547 | 0.75 | 3.646 | 39.250 |
| 7.850 | 0.729 | 1.0 | 4.740 | 51.025 |
| 7.065 | 0.656 | 0.90 | 4.376 | 47.100 |
| 10.205 | 0.948 | 1.3 | 5.834 | 62.800 |
| 8.635 | 0.802 | 1.1 | 5.105 | 54.950 |
| 14.915 | 1.386 | 1.9 | 10.916 | 117.500 |
| 10990 | 1.021 | 1.4 | 6.928 | 74.575 |
| 13.345 | 1.240 | 1.7 | 8.751 | 94.200 |
| 17.270 | 1.604 | 2.2 | 12.398 | 133.450 |
| 11.775 | 1.094 | 1.5 | 7.293 | 78.500 |
| 19.625 | 1.823 | 2.5 | 13.856 | 149.150 |
| 12.560 | 1.167 | 1.6 | 8.387 | 90.275 |
| 14.130 | 1.313 | 1.8 | 10.210 | 100.900 |
| 31.400 | 2.917 | 4.0 | 16.044 | 172.700 |
| 15.700 | 1.459 | 2.0 | 11.669 | 125.600 |
| 23.550 | 2.188 | 3.0 | 14.586 | 157.000 |
| 18.055 | 1.677 | 2.3 | 13.127 | 141.300 |
| 27.475 | 2.553 | 3.5 | 15.315 | 164.850 |
| 35.325 | 3.282 | 4.5 | 18.232 | |
What is S500MC Used For?
| Industry | Application |
|---|---|
| Automotive | Truck chassis |
| Trailer Manufacturing | Semi trailer frame |
| Construction Machinery | Crane boom |
| Agricultural Equipment | Harvester frame |
| Material Handling | Forklift mast |
| Railway | Freight wagon |
Thanks to its high yield strength of 500 MPa and excellent cold-forming capability, S500MC is widely used where weight reduction and structural strength are required.

GNEE Processing Service
- Plasma Cutting
- Laser Cutting
- Water Jet Cutting
- Flame Cutting
- CNC Machining
- Drilling
- Beveling
- Shot Blasting
- Painting
- Custom Size
Can S500MC Be Welded?
Yes.S500MC has a low carbon equivalent (CEV), making it suitable for:Laser welding,MAG welding,MIG welding,Robot welding.Normally no preheating is required for thin plates.


Why Choose GNEE?
GNEE is a trusted supplier of high-strength structural steel plates with over 15 years of export experience. We supply S500MC steel plates with stable quality, competitive factory prices, and fast delivery to customers worldwide.
Our advantages include:
- EN 10204 3.1 Mill Test Certificate provided
- Third-party inspection available (SGS, BV, TÜV, etc.)
- Custom cutting and processing services
- Flexible sizes and fast delivery
- Professional export packing and global shipping
- Technical support before and after sales
We are committed to providing reliable products and efficient service for every project.
Looking for S500MC steel plates?
Send us your required grade, size, quantity, and destination port. Our experienced sales team will provide a competitive quotation, technical support, and delivery solution within 24 hours.
Contact GNEE today for the latest price, material specifications, or a customized solution for your project.

FAQ
Q: Is S500MC stronger than S355?
A: Yes, absolutely. S500MC has a minimum yield strength of 500 MPa, which is about 40% higher than S355MC's 355 MPa. So it's definitely the stronger choice for load‑bearing parts.
Q: Is S500MC easy to weld?
A: Yes, it welds very well. Thanks to its low carbon equivalent (CEV ≤ 0.39%), you can usually skip preheating for most thicknesses, and there's no need for post‑weld heat treatment either. That makes welding quite straightforward.
Q: Can S500MC replace S355?
A: Yes, it can – especially when you need higher strength and want to reduce weight. You can use thinner sections to achieve the same load capacity, which saves material and lowers overall mass.
Q: Is S500MC heat treated?
A: No, it's not heat treated. It comes in a thermo‑mechanically rolled condition, which gives it the required strength through controlled rolling and cooling, without extra heat treatment steps.
Q: What standard is S500MC?
A: It's covered by the European standard EN 10149‑2, which specifies high‑strength steels for cold‑forming applications.
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