S355N vs S355MC Steel Comparison

S355N (EN 10025-3, 1.0545): A normalized or normalized rolled fine-grain steel with 355 MPa yield strength and -20°C toughness, designed for high-load structural applications like bridges and cranes in moderate climates.

S355MC (EN 10149-2): A thermomechanically rolled, high-strength low-alloy steel with ≥355 MPa yield strength, optimized for cold forming in applications like automotive frames and machinery components.

S355N excels in structural integrity and toughness, while S355MC is tailored for formability and lighter, cold-formed structures.

The chemical composition of S355N vs S355MC influences their properties:

Carbon Equivalent (CEV):

S355N: ≤0.43% (≤63 mm).

S355MC: ≤0.35% (≤10 mm).

S355MC's lower carbon (0.12% vs 0.20%), sulfur (0.020% vs 0.025%), phosphorus (0.025% vs 0.030%), and higher microalloying (Nb, V, Ti) enhance formability and weldability, while S355N's composition supports robust toughness, similar to en 10025 3 s420n normalized structural steel plate.

S355N vs S355MC mechanical properties highlight their differences:

Yield Strength: Both offer ≥355 MPa, suitable for moderate-load applications.

Tensile Strength: S355N's 470-630 MPa exceeds S355MC's 430-550 MPa, reflecting its structural focus.

Elongation: S355MC's ≥23% slightly surpasses S355N's ≥22%, enhancing formability for cold working.

Impact Toughness: S355N guarantees ≥27 J at -20°C; S355MC's toughness is not mandatory, prioritizing formability.

Hardness: S355MC's lower hardness (130-170 HB vs 150-190 HB) supports its cold-forming capabilities.

Thickness: S355N up to 200 mm, S355MC typically ≤10 mm, reflecting different applications, similar to en 10025 3 s355n normalized structural steel plate.

S355N: Normalized for fine-grain microstructure, enhancing toughness for structural welds. Preheating typically not required for <20 mm; optional for thicker plates (100-150°C); PWHT optional (550-650°C). CEV ≤0.43%.

S355MC: Thermomechanically rolled for superior formability; low CEV (≤0.35%) minimizes preheating needs, ideal for cold forming and welding.

Consumables: Both use ER70S-6 (GMAW) and EM12K flux with EH14 wire (SAW). S355MC's lower CEV and impurities enhance weld quality, similar to en 10025 3 s275n normalized structural steel plate.

S355N: High-load structures like bridges, cranes, and building frameworks in moderate climates, leveraging guaranteed -20°C toughness.

S355MC: Cold-formed components in automotive frames, machinery parts, and structural profiles, benefiting from high formability and lower thickness.

S355N is suited for robust structural applications, while S355MC excels in lightweight, formed components. For colder climates, consider en 10025 3 s355nl normalized structural steel plate.

GNEE Steel supplies S355N and S355MC:

Inventory: Extensive stock in China.

Sizes: Thickness 6–200 mm (S355N), ≤10 mm (S355MC), widths 2000/2500/3000 mm, lengths up to 12,000 mm.

Delivery: 7-30 days globally.

Certifications: EN 10204 3.1/3.2, UT testing (EN 10160), ABS/LR/BV/DNV approvals.

Processing: Cutting, welding, bending.

Contact us for en 10025 3 s355n normalized structural steel plate.

S355N and S355MC are high-strength steels with ≥355 MPa yield strength, but they differ in processing and application focus.

S355N (EN 10025-3) is a normalized steel with -20°C toughness for structural applications like bridges and cranes, while S355MC (EN 10149-2) is thermomechanically rolled for cold-formed automotive and machinery components.

GNEE Steel's inventory supports S355N up to 200 mm and S355MC up to 10 mm, with global delivery in 7-30 days and certifications like EN 10204 3.1/3.2.

S355N excels in structural toughness, while S355MC prioritizes formability, offering tailored solutions for diverse engineering needs.

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If you want to learn more about GNEE's products, you can send an email to info@gneesteels.com. We are more than happy to assist you.