S355NL Equivalent to ASTM Standards

S355NL Equivalent to ASTM Standards

S355NL equivalent material ASTM refers to the closest American standards matching EN 10025-3 S355NL, a high-strength, low-alloy structural steel with fine-grain structure for low-temperature toughness. While exact equivalents vary due to differences in processing and testing, ASTM A633 Grade E is often the best match for cold performance, and ASTM A572 Grade 65 for strength. The S355NL equivalente in ASTM standards prioritizes similar yield, tensile strength, and impact toughness.

This article compares S355NL with ASTM equivalents, including chemical composition, mechanical properties, weldability, and applications, addressing core keywords s355nl equivalent material astm, s355nl equivalente. For more details, visit our EN 10025-3 S355NL normalized structural steel plate.

What is S355NL Steel?

S355NL is a normalized or normalized rolled fine-grain structural steel under EN 10025-3, with:

• S: Structural steel.
• 355: Minimum yield strength of 355 MPa (≤16 mm).
• NL: Normalized, with impact toughness tested at -50°C.

Its fine-grain microstructure ensures excellent toughness and weldability for cold climates, such as offshore platforms and arctic structures.

S355NL Equivalent ASTM Materials

The S355NL equivalent material ASTM includes:

• ASTM A633 Grade E: Closest for low-temperature toughness (tested at -40°C), yield ~415 MPa.
• ASTM A572 Grade 65: Matches strength (yield 450 MPa), but less cold-focused (optional 0°C testing).
• ASTM A709 Grade 50W: Similar toughness with weathering resistance, yield 345 MPa.

These are high-strength low-alloy (HSLA) steels under ASTM standards, used in structural fabrication. A633 Grade E is the best S355NL equivalente for cold applications, as per industry sources like SteelNumber and Universal Steel America.

Chemical Composition Comparison

The S355NL equivalent material ASTM composition aligns closely with A633 Grade E:

Carbon Equivalent (CEV):

• S355NL: ≤0.43% (≤63 mm).
• A633 Gr E: ≤0.45%, similar weldability.
• A572 Gr 65: ≤0.47%, slightly higher.

The S355NL equivalente shows A633 Gr E's composition closely matches S355NL for toughness.

Mechanical Properties Comparison

S355NL and ASTM equivalents:

Strength: A572 Gr 65 has higher yield (450 MPa), but S355NL and A633 Gr E are closer for balanced performance. Toughness: S355NL's -50°C testing matches A633 Gr E's -40°C closely, superior to A572 Gr 65's optional 0°C.

Welding and Heat Treatment

• S355NL: CEV ≤0.43%, preheating 100-150°C for >20 mm; PWHT optional (550-650°C).
• A633 Gr E: CEV ≤0.45%, similar preheating; PWHT recommended for thick plates.
• A572 Gr 65: CEV ≤0.47%, more preheating (125-175°C).

The S355NL equivalent material ASTM welding is comparable, with S355NL slightly easier.

Applications

• S355NL: Cold-climate offshore, wind towers, arctic bridges.
• A633 Gr E: Similar cold applications, pressure vessels.
• A572 Gr 65: Temperate buildings, bridges.

The S355NL equivalente applications align for cold use.

Why Choose Gangsteel?

Gangsteel supplies S355NL:

• Inventory: Extensive stock in China.
• Sizes: Thickness 6–250 mm, widths 2000/2500/3000 mm.
• Delivery: 7-30 days globally.
• Certifications: EN 10204 3.1/3.2, UT testing.

Contact us for EN 10025-3 S355NL normalized structural steel plate.

FAQ

What is the best S355NL equivalent material ASTM? A633 Grade E is the best S355NL equivalent material ASTM for -40°C toughness and 415 MPa yield, closely matching S355NL's cold performance.

Is A572 Gr 65 a S355NL equivalente? A572 Gr 65 is a S355NL equivalente for strength (450 MPa yield) but less for cold toughness; use A633 Gr E for -50°C applications.

How does S355NLcompare to A633 Gr E? S355NL and A633 Gr E both offer 470-630 MPa tensile and -40°C/-50°C toughness, with S355NL's normalization enhancing weldability.

What is S355NL equivalent material ASTMfor cold use? A633 Gr E is the S355NL equivalent material ASTM for cold use, with 34 J at -40°C.

Can A572 Gr 65 replace S355NL? A572 Gr 65 can replace S355NL in temperate climates but not cold ones due to inferior toughness.

What is the S355NL equivalentein China? Q345E is the S355NL equivalente in China, with -40°C toughness. See EN 10025-3 S355N normalized structural steel plate.