What is S420MC material specification?

S420MC Material Specification

As a premier exporter and manufacturer of high-quality structural steel plates, Gangsteel specializes in producing EN 10149-2 compliant materials, including the versatile S420MC steel grade.

S420MC is a thermomechanically rolled fine-grain high-strength low-alloy (HSLA) steel designed for cold forming, offering excellent strength, ductility, and weldability.

Ideal for automotive components, machinery parts, and light structural elements, our S420MC plates are delivered in thermomechanically rolled (+M) condition to ensure superior formability and performance.

For a comprehensive overview of our en 10025 3 normalized steel plate offerings, explore our full range.

What is S420MC Material?

S420MC material, designated as 1.0980 under the European standard EN 10149-2, is part of the family of hot-rolled high-yield strength steels for cold forming. The "S" denotes structural steel, "420" indicates a minimum yield strength of 420 MPa, and "MC" specifies thermomechanical rolling for enhanced cold formability. This grade is optimized for applications where bending, pressing, or deep drawing is required without sacrificing strength, distinguishing it from normalized grades like S420N (EN 10025-3).

EN 10149-2 S420MC is produced through controlled thermomechanical rolling, which combines hot rolling with accelerated cooling to achieve a fine-grain microstructure, improving ductility and reducing the need for heat treatment. Gangsteel produces S420MC plates in thicknesses up to 20 mm, with precise microalloying for optimal grain refinement and performance.

Chemical Composition of S420MC Material

The chemical composition of S420MC is tightly controlled to ensure low carbon equivalent for weldability and microalloying for strength (ladle analysis, max % unless noted).

*Note: Sum of Nb, V, Ti ≤0.22%. Low P/S improve toughness; Al ensures grain refinement. CEV typically ≤0.43 for excellent weldability.

Mechanical Properties of S420MC Material

S420MC provides high yield strength with good elongation for cold forming (minimum values, thermomechanically rolled condition).

*Note: No standard impact test; specify if needed. Excellent formability with r/t ≤0.5 longitudinal for thin sections.

Heat Treatment Guide for S420MC Material

S420MC is supplied in thermomechanically rolled (+M) condition, combining controlled rolling with accelerated cooling for fine-grain structure.

• Welding Preheating: Not required for ≤20 mm; 100–150°C for thicker (CEV ≤0.43).
• PWHT: Avoid; may degrade properties.
• Hot Forming: Not recommended; cold forming is primary.
• Annealing: If needed, stress-relief at <550°C to preserve strength.

Follow EN 1011-2 for welding. Gangsteel optimizes for cold forming.

Applications of S420MC Material

• Automotive: Chassis, reinforcements.
• Machinery: Frames, brackets.
• Agriculture: Implements.
• Construction: Light profiles.

For normalized variants, see en 10025 3 s420nl normalized structural steel plate.

Equivalent Grades to S420MC

Why Choose Gangsteel for S420MC Material?

With ISO-certified quality, Gangsteel delivers S420MC plates tailored to specifications, stocked for immediate export. Visit our product page for details.

Summary

S420MC material specification (EN 10149-2) includes max 0.12% C, CEV ≤0.43 for weldability, 420 MPa yield, 480–620 MPa tensile, and 16–19% elongation, with excellent bendability (r/t ≤0.5). It is thermomechanically rolled for cold forming in automotive and machinery. S420MC from Gangsteel ensures reliability for lightweight, high-strength projects.

FAQ

What is the chemical composition of S420MC material?

Max 0.12% C, 1.60% Mn, 0.025% P, 0.015% S, with Nb+Ti+V ≤0.22% for grain refinement and strength.

What are the mechanical properties of S420MC material?

Yield 360–420 MPa, tensile 480–620 MPa, elongation 16–19%, depending on thickness; no standard impact test.

What is the CEV of S420MC material?

Maximum CEV of 0.43, ensuring excellent weldability without preheating for thin sections.

Is S420MC suitable for welding?

Yes, its low CEV (0.43) allows welding with low-hydrogen fillers; preheating recommended for thicker sections.

What are common equivalents to S420MC material?

ASTM A1011 HSLAS Gr. 60, DIN H420LA, JIS SPFH590, GB Q420B offer similar high-strength properties when thermomechanically processed.