en 10025 s275nl equivalent astm

EN 10025 S275NL Equivalent ASTM Grade

As a leading exporter and manufacturer of high-quality structural steel plates, Gangsteel specializes in producing EN 10025-3 compliant materials, including the S275NL steel grade.

S275NL is a normalized fine-grain structural steel designed for welded constructions, offering excellent toughness at low temperatures down to -50°C, making it ideal for bridges, offshore structures, and cranes.

Identifying its equivalent in ASTM standards is critical for projects requiring compliance with American specifications.

Our S275NL plates are supplied in normalized or normalized rolled conditions, ensuring superior weldability and performance.

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

S275NL and Its ASTM Equivalent

S275NL (EN 10025-3, designation 1.0491) is a low-alloy, fine-grain structural steel with a minimum yield strength of 275 MPa and a minimum Charpy V-notch impact energy of 27 Joules at -50°C. The closest ASTM equivalent is A633 Grade A (ASTM A633/A633M), a normalized high-strength low-alloy structural steel with similar yield strength, tensile properties, and low-temperature toughness. A633 Gr. A is designed for welded structures requiring enhanced toughness, making it a suitable substitute for S275NL in applications like arctic infrastructure and heavy engineering.

Gangsteel supplies S275NL and ASTM equivalents with full certifications, ensuring seamless integration for international projects. For related grades, see en 10025 3 s275nl normalized structural steel plate or en 10025 3 s355nl normalized structural steel plate.

Equivalent Grades Table

Chemical Composition Comparison

Both grades feature low-carbon profiles for weldability (ladle analysis, max % unless noted, ≤100 mm thickness).

*Note: S275NL’s tighter P/S limits enhance cold toughness; A633 Gr. A’s simpler alloying maintains weldability.

Mechanical Properties Comparison

Properties for normalized condition (≤16 mm thickness for S275NL, ≤50 mm for A633 Gr. A, minimum values).

*Notes: A633 Gr. A’s slightly higher yield (290 MPa) and tensile strength align closely with S275NL; impact testing at -45°C is comparable, but specify -50°C for exact match.

Applications and Substitution Notes

• S275NL: Used in cold-climate bridges, offshore platforms, and cranes requiring -50°C toughness.
• A633 Gr. A: Suits similar welded structures, including marine and arctic applications, with normalized delivery for low-temperature performance.

When substituting, confirm A633 Gr. A’s impact testing at -50°C to match S275NL’s requirements. For higher strength, consider en 10025 3 s420nl normalized structural steel plate.

Why Choose Gangsteel?

Gangsteel offers ISO-certified S275NL and ASTM-equivalent plates with dual certifications, ensuring global compatibility. Contact us for tailored solutions.

Summary

The ASTM equivalent to EN 10025-3 S275NL is A633 Grade A, offering similar yield strength (290 MPa vs. 275 MPa), tensile strength (430–570 MPa vs. 370–510 MPa), and low-temperature toughness when normalized. Both are ideal for welded structures in cold environments, with A633 Gr. A serving as a reliable substitute in US-standard projects.

FAQ

What is the ASTM equivalent to S275NL?

A633 Grade A (ASTM A633/A633M) is the closest match, with 290 MPa yield and normalized fine-grain structure for -50°C toughness when specified.

How do S275NL and A633 Gr. A differ chemically?

S275NL has lower carbon (0.16% vs. 0.18%), phosphorus (0.025% vs. 0.035%), and sulfur (0.020% vs. 0.040%) for enhanced cold toughness, but both have comparable CEV (≤0.42) for weldability.

Are their mechanical properties identical?

A633 Gr. A has slightly higher yield (290 MPa vs. 275 MPa) and tensile strength (430–570 MPa vs. 370–510 MPa), with similar elongation (23% vs. 24%). Impact at -50°C aligns if specified for A633 Gr. A.

Can A633 Gr. A replace S275NL in cold environments?

Yes, if normalized and tested for 27 J at -50°C, A633 Gr. A matches S275NL’s performance for arctic bridges or offshore platforms.

What if I need a higher-strength ASTM equivalent?

For S355NL, consider ASTM A633 Gr. C or A572 Gr. 50; contact Gangsteel for cross-standard guidance.