What is s355nl equivalent material astm?

The closest ASTM equivalent to EN 10025-3 S355NL is ASTM A572 Grade 65, but it’s not a perfect match due to differences in low-temperature toughness and processing. Below is a concise comparison to clarify their equivalence, with additional ASTM alternatives for context.

Overview of S355NL

EN 10025-3 S355NL is a normalized, fine-grained structural steel with:

• Yield Strength: ≥355 MPa (≤16 mm).
• Toughness: ≥27 J at -50°C (Charpy V-notch).
• Processing: Normalized/normalized rolled for enhanced toughness and weldability.

It’s ideal for cold climates (e.g., offshore platforms, bridges). See EN 10025-3 S355NL normalized structural steel plate.

ASTM A572 Grade 65 as Equivalent

ASTM A572 Grade 65, a high-strength low-alloy (HSLA) steel under ASTM A572/A572M, is often cited as the closest equivalent due to its strength. However, key differences exist:

Chemical Composition Comparison

• Carbon Equivalent (CEV): S355NL (≤0.43%) has better weldability than A572 Gr 65 (≤0.47%) due to lower impurities and fine-grain elements (e.g., Al, Nb).

Mechanical Properties Comparison

• Strength: A572 Gr 65 is stronger (448 MPa yield vs 355 MPa), but this may require design adjustments.
• Toughness: S355NL’s -50°C toughness far exceeds A572 Gr 65’s optional 0°C testing, making S355NL better for cold environments.
• Processing: S355NL’s normalization ensures finer grains; A572 Gr 65 is typically hot-rolled.

Other ASTM Equivalents

While A572 Grade 65 is the closest in strength, other ASTM grades may align better for specific needs:

• ASTM A633 Grade E: Closer in low-temperature toughness (≥34 J at -40°C), yield ~415 MPa; better for cold climates but slightly lower strength.
• ASTM A709 Grade 50W: Yield ~345 MPa, tested for toughness at -40°C (optional), with weathering properties; less strong but suitable for cold, corrosive environments.

Applications

• S355NL: Offshore platforms, wind towers, bridges in arctic conditions.
• A572 Gr 65: High-rise buildings, bridges, and machinery in temperate climates where higher strength is needed.

For related grades, see EN 10025-3 S420NL normalized structural steel plate.

Why A572 Grade 65 Isn’t a Perfect Match

A572 Grade 65’s higher strength and less stringent low-temperature testing make it less ideal for sub-zero applications compared to S355NL. For projects requiring -50°C toughness, A633 Grade E is a better ASTM alternative despite its lower yield.

Why Choose Gangsteel for S355NL?

Gangsteel supplies S355NL with:

• Sizes: 6–250 mm thickness, 2000/2500/3000 mm widths, up to 12,000 mm length.
• 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 S355NL normalized structural steel plate.

FAQ

Is ASTM A572 Grade 65 the best equivalent to S355NL?It’s the closest in strength but not in low-temperature toughness; A633 Grade E is better for cold climates.

Why choose S355NL over A572 Gr 65?S355NL’s -50°C toughness and fine-grain normalization suit colder environments better.

Can A572 Gr 65 replace S355NL?Only in non-critical cold conditions; its higher strength requires design adjustments.

What other ASTM grades match S355NL?A633 Grade E (toughness) or A709 Grade 50W (weathering, cold performance).

Explore related grades like EN 10025-3 S355N normalized structural steel plate or EN 10025-3 S460NL normalized structural steel plate.