s420nc steel and s420mc steel

S420NC Steel: Non-Standard Grade Clarification

As a premier exporter and manufacturer of high-quality structural steel plates, Gangsteel specializes in producing EN 10025-3 compliant materials, including high-strength grades like S420N and S420NL.

S420NC steelis not a recognized standard grade in EN 10025-3 or major international steel specifications. It is likely a typographical error or misnomer for:

• S420N(EN 10025-3 normalized fine-grain steel, -20°C impact)
• S420NL(EN 10025-3 normalized fine-grain steel, -50°C impact)
• S420MC(EN 10149-2 thermomechanically rolled cold-forming steel)

If you meant one of these, we can provide detailed specs below. Our plates are delivered in normalized (+N) or thermomechanically rolled (+M) conditions.

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

Likely Intended Grades & Properties

1. S420N (EN 10025-3 Normalized Fine-Grain)

High-strength structural steelwith 420 MPa yield and -20°C toughness.

Chemical (Max %): C 0.20, Mn 1.00–1.70, P 0.025, S 0.020, CEV 0.48.

2. S420NL (EN 10025-3 Normalized Fine-Grain)

Identical to S420N, but with -50°C impact for arctic/offshore use.

Chemical: Same as S420N.

3. S420MC (EN 10149-2 Thermomechanical)

High-strength cold-forming steelwith 420 MPa yield, suitable for automotive/forming.

Chemical (Max %): C 0.20, Mn 1.80, P 0.025, S 0.020, Nb+Ti+V 0.22.

Equivalent Grades for S420N/S420NL

Why Gangsteel?

• Custom Certification– EN 10204 3.1/3.2
• Stock– 6–250 mm
• Testing– UT, Z35, HIC

Contact: admin@gangsteel.comS420N Page: en 10025 3 s420n normalized structural steel plate S420NL Page: en 10025 3 s420nl normalized structural steel plate

Summary

S420NC steeldoes not exist as a standard grade — likely intended as S420N, S420NL, or S420MC. S420N/S420NL offer 420 MPa yield and normalized fine-grain structure for heavy structures; S420MC for cold-forming. Contact us for clarification.

FAQ

Is S420NC a valid steel grade?

No— S420NC steel is not defined in EN 10025-3, EN 10149-2, or other standards. It is probably a typo for S420N (normalized, -20°C), S420NL (-50°C), or S420MC (thermomechanical).

What if I meant S420N?

S420Nis a high-strength normalized fine-grain steel (EN 10025-3) with 420 MPa yield, 520–680 MPa tensile, and 40 J impact at -20°C. Ideal for bridges and cranes.

What if I meant S420NL?

S420NLis identical to S420N but with 27 J impact at -50°C for arctic/offshore use. Same strength, higher cold toughness.

What if I meant S420MC?

S420MC(EN 10149-2) is a thermomechanically rolled cold-forming steel with 420 MPa yield and 480–620 MPa tensile, for automotive and light structures.

How can I confirm the correct grade?

Provide your project specs (impact temp, delivery condition) — we'll recommend and supply certified plates. Contact admin@gangsteel.com.