S420MC Hot rolled pickled steel plate :Chemical Composition, Mechanical Properties and applications

A: A572 Grade 60
The ASTM equivalent to S420MC is A572 Grade 60 (ASTM A572/A572M), a high-strength low-alloy columbium-vanadium structural steel with a minimum yield strength of 415 MPa. A572 Gr.

A: The equivalent grade of EN 10149-2 is ASTM A572. This American standard is widely used in the construction industry and offers similar properties to S420MC steel. Both grades have high strength and good weldability, making them suitable for structural applications.

A: 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.

A: S420MC steelis a high-strength low-alloy cold-forming steel with 420 MPa min yield (≤3 mm), 480–620 MPa tensile, and 19% elongation. It is thermomechanically rolled for superior formability and used in automotive and machinery.

A: Max 0.20% C, 1.80% Mn, 0.025% P, 0.020% S, CEV ≤ 0.43, with Nb+Ti+V ≤ 0.22% for grain refinement and strength.

A: Yield: 420 MPa (≤3 mm) → 360 MPa (16–40 mm)
Tensile: 480–620 MPa (≤16 mm), 470–610 MPa (>16 mm)
Elongation: 19% (≤8 mm), 18% (>8 mm)
Bend Radius: r/t ≤ 1.0 (longitudinal) for 90° bend.

A: S420MCis thermomechanically rolled for cold forming (EN 10149-2), with focus on bendability. S420N/NL are normalized for welded structures (EN 10025-3), with impact toughness at -20°C/-50°C.

A: Primarily for cold-formed parts: automotive chassis, machinery brackets, agricultural implements, and lightweight construction profiles.

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

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

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