S460N vs S460M Comparison

S460N vs S460M Comparison

At Gangsteel, we’re here to clarify the differences between S460N vs S460M, two high-strength, low-alloy structural steels under EN 10025 standards, to help you choose the right material for your project. S460N (EN 10025-3) is normalized for fine-grain structure and -20°C toughness, while S460M (EN 10025-4) is thermomechanically rolled for enhanced formability and -50°C toughness.

Both are part of the en 10025 3 normalized steel plate and EN 10025-4 families, offering a minimum yield strength of 460 MPa. Gangsteel compares their chemical composition, mechanical properties, and applications, with ties to grades like en 10025 3 s420n normalized structural steel plate and en 10025 3 s355n normalized structural steel plate. For more details, visit our en 10025 3 s460n normalized structural steel plate page.

Overview of S460N and S460M

• S460N (EN 10025-3): Normalized or normalized rolled, with 460 MPa yield strength and -20°C toughness, ideal for bridges and cranes in moderate climates.
• S460M (EN 10025-4): Thermomechanically rolled (TMCP), with 460 MPa yield strength and -50°C toughness, suited for cold climates and complex forming.

S460N is processed for consistent microstructure, while S460M’s TMCP enhances formability and toughness, making it closer to en 10025 3 s460nl normalized structural steel plate in cold performance.

Chemical Composition Comparison

The chemical composition of S460N vs S460M influences their properties:

Carbon Equivalent (CEV):

• S460N: ≤0.48% (≤63 mm).
• S460M: ≤0.45% (≤63 mm).

S460M’s lower CEV and impurities (C, P, S) enhance weldability and toughness, similar to en 10025 3 s420n normalized structural steel plate.

Mechanical Properties Comparison

S460N vs S460M mechanical properties highlight their differences:

• Strength: Both offer 460 MPa yield strength, ideal for heavy loads.
• Toughness: S460M’s -50°C toughness surpasses S460N’s -20°C, making it better for cold climates.
• Formability: S460M’s TMCP process improves ductility and forming compared to S460N’s normalized structure.
• Thickness: Both up to 200 mm, versatile like en 10025 3 s355n normalized structural steel plate.

Processing and Fabrication

• S460N: Normalized for consistent microstructure; suited for standard welding and machining. Preheating (100-150°C) for >20 mm; PWHT optional (550-650°C).
• S460M: TMCP enhances formability for complex shapes; lower CEV (≤0.45%) improves weldability. Similar preheating and PWHT.

Consumables: Both use ER70S-6 (GMAW), EM12K flux with EH14 wire (SAW).

Applications

• S460N: Bridges, cranes, building frameworks in moderate climates (e.g., temperate Europe).
• S460M: Offshore platforms, wind towers, and structures in cold climates (e.g., northern Europe) due to superior toughness and formability.

For extreme cold, S460M aligns with en 10025 3 s460nl normalized structural steel plate.

Why Choose Gangsteel?

Gangsteel supplies S460N and S460M:

• Inventory: Extensive stock in China.
• Sizes: Thickness 6–200 mm, 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 s460n normalized structural steel plate.

FAQ

What is the main difference in S460N vs S460M?
S460N is normalized with -20°C toughness for moderate climates, while S460M is thermomechanically rolled with -50°C toughness for cold climates.

How does S460N vs S460M toughness compare?
S460M’s -50°C impact toughness (≥27 J) outperforms S460N’s -20°C, making it better for cold environments.

Which is better for welding, S460N or S460M?
S460M’s lower CEV (≤0.45% vs ≤0.48%) makes it slightly easier to weld, though both are compatible with GMAW/SAW.

What applications suit S460N vs S460M?
S460N is ideal for bridges and cranes in moderate climates; S460M suits offshore platforms and wind towers in cold climates.

How do S460N vs S460M compare to S355N?
Both S460N and S460M have higher yield strength (460 MPa vs 355 MPa) than S355N, with S460M offering superior cold toughness.

What certifications support S460N and S460M?
Gangsteel provides both with EN 10204 3.1/3.2, UT testing (EN 10160), and ABS/LR/BV/DNV approvals.