S420MC Cold-forming Hot-rolled Automotive Structural Steel
EN 10149-2 PDF
S420MC Products Description
S420MC is a high-strength, cold-formable hot-rolled structural steel designed for automotive applications, primarily used in chassis beams, cross members, and other structural components. Supplied by GNEE STEEL, its chemical composition includes carbon (C), silicon (Si), manganese (Mn), and other elements. Key mechanical properties include:
Yield strength: ≥420 MPa
Tensile strength: 480-620 MPa
Elongation: ≥16%
Excellent cold-bending performance (bend radius d=0) [4][7].
As a fine-grained steel, it is delivered in hot-rolled pickled condition with Grade A surface quality.
S420MC Application
Automotive: Chassis beams, cross members, and structural parts for buses, special vehicles, and lightweight designs.
Industrial Manufacturing:
Container & Light Steel Structures: Optimized for weight reduction due to thin gauge, high strength, and superior ductility.
Household Appliances: Pickled sheets for refrigerators and AC compressors, meeting deep-drawing performance requirements.
Product Specifications
Forms: Steel plates, coils, strips.
Thickness: 2.0-20.0 mm (2025 standard).
Width: 900-2100 mm.
Surface Treatment: Pickled or hot-rolled.
Custom Processing: Slitting, leveling, and rough machining services.
FAQ About EN 10149-2 S420MC Hot Rolled Automotive Steel
1.What is S420MC material grade?
S420MC is a high-strength low-alloy steel (HSLA) specifically engineered for automotive lightweight design. Through hot-rolling processes and cold-forming technology, it enhances the strength and durability of structural components.
Thanks to its fine-grained microstructure and high degree of purity, grade S420MC is well suited for cold bending, folding and cold flanging without cracking. The name of grade S420MC refers to its upper yield strength. This is 420 MPa.
2.What is en 10149-2 S420MC equivalent to?
S420MC steel plate/sheet is in EN 10149-2 standard, the material number is 1.0972. The equivalent grades of S420MC steel are SEW092 QStE 420TM, NFA36-231 E420D, UNI8890c FeE420TM, ASTM 060XLK, BS1449 HR50F45.
3.What is the chemical composition & Mechanical properties of en10149 S420MC?
S420MC | 1.0980: Mechanical properties, longitudinal
| Upper yield1) strength ReH MPa min. | Tensile strength Rm MPa | Elongation at fracture A80 % min. | Elongation at fracture A3) % min. |
| 420 | 480–620 | 16 | 19 |
S420MC | 1.0980: Chemical composition (heat analysis)
| Percentage by weight % max. | ||||||||
| C | Mn | Si | P | S | Altotal min. | Nb | V | Ti |
| 0.12 | 1.60 | 0.50 | 0.025 | 0.015 | 0.015 | 0.092) | 0.202) | 0.15 2) |
4.Thickness tolerance of S420mc standard structural steel plate
| S420MC steel plate Thickness | S420MC plate THICKNESS | ||||
|---|---|---|---|---|---|
| ≤ 1.200 MM | > 1.200 MM ≤ 1.500 MM | > 1.500 MM ≤ 1.800 MM | > 1.800 MM | ||
| ≤ 2,00 | -/+ 0,17 | -/+ 0,19 | -/+ 0,21 | – | |
| >2,50 | ≤ 3,00 | -/+ 0,20 | -/+ 0,22 | -/+ 0,24 | -/+ 0,26 |
| >3,00 | ≤ 4,00 | -/+ 0,20 | -/+ 0,24 | -/+ 0,26 | -/+ 0,27 |
| >4,00 | ≤ 5,00 | -/+ 0,24 | -/+ 0,26 | -/+ 0,28 | -/+ 0,29 |
| >5,00 | ≤ 6,00 | -/+ 0,26 | -/+ 0,28 | -/+ 0,29 | -/+ 0,31 |
| >6,00 | ≤ 8,00 | -/+ 0,29 | -/+ 0,30 | -/+ 0,31 | -/+ 0,35 |
| >8,00 | ≤ 10,00 | -/+ 0,32 | -/+ 0,33 | -/+ 0,34 | -/+ 0,40 |
| >10,00 | ≤ 12,00 | -/+ 0,35 | -/+ 0,36 | -/+ 0,37 | -/+ 0,43 |
| >12,00 | ≤ 15,00 | -/+ 0,37 | -/+ 0,38 | -/+ 0,40 | -/+ 0,46 |
| >15,00 | ≤ 25,00 | -/+ 0,40 | -/+ 0,42 | -/+ 0,45 | -/+ 0,50 |
