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En 10025 s355n steel plate specifications

EN 10025 S355N Specifications

At Gangsteel, we’re excited to present the detailed EN 10025 S355N specifications, outlining the properties of this high-strength, low-alloy structural steel under EN 10025-3. Renowned for its fine-grain structure, 355 MPa yield strength, and -20°C toughness, S355N is a top choice for structural projects like bridges, cranes, and building frameworks in moderate climates.

As part of the en 10025 3 normalized steel plate family, EN 10025 S355N delivers reliable performance. Gangsteel explores its chemical composition, mechanical properties, delivery conditions, and applications, comparing it to grades like en 10025 3 s420n normalized structural steel plate and en 10025 3 s460n normalized structural steel plate. For more details, visit our en 10025 3 s355n normalized structural steel plate page.

What is EN 10025 S355N?

EN 10025 S355N is a high-strength, low-alloy structural steel under the EN 10025-3:2019 standard, with a minimum yield strength of 355 MPa for plates up to 16 mm thick. Its designation, also known as material number 1.0545, breaks down as:

S: Structural steel.
355: Minimum yield strength in MPa.
N: Normalized or normalized rolled, tested for impact toughness at -20°C.

The normalization process refines the grain structure, enhancing EN 10025 S355N specifications for strength, toughness, and weldability, ideal for moderate climates. Compared to en 10025 3 s460n normalized structural steel plate, S355N offers lower strength (355 MPa vs 460 MPa) but is more cost-effective for general structural applications.

Chemical Composition of EN 10025 S355N

Gangsteel ensures EN 10025 S355N meets stringent chemical composition standards for optimal performance:

Element	Ladle Analysis (max %)	Product Analysis (max %)	Role in Properties
Carbon (C)	0.20	0.22	Enhances strength, kept low for weldability and toughness.
Silicon (Si)	0.50	0.55	Aids deoxidation, improves strength and microstructure.
Manganese (Mn)	0.90-1.65	0.85-1.75	Boosts strength and toughness for load-bearing capacity.
Phosphorus (P)	0.030	0.035	Minimized to reduce inclusions, enhancing toughness.
Sulfur (S)	0.025	0.030	Low levels prevent inclusions, improving weld quality.
Nitrogen (N)	0.025	0.027	Controlled to avoid brittleness, supporting toughness.
Aluminum (Al)	0.020 (min, total)	0.015 (min, total)	Refines grains for toughness, improves microstructure.
Niobium (Nb)	0.05	0.06	Promotes fine-grain structure, enhancing strength and toughness.
Vanadium (V)	0.10	0.12	Increases strength via precipitation hardening.
Titanium (Ti)	0.05	0.06	Refines grains, supports toughness.
Chromium (Cr)	0.30	0.35	Enhances corrosion resistance and strength.
Nickel (Ni)	0.50	0.55	Improves toughness in moderate climates.
Molybdenum (Mo)	0.10	0.12	Boosts strength and creep resistance.
Copper (Cu)	0.55	0.60	Enhances corrosion resistance and strength.

Carbon Equivalent (CEV): Capped at 0.43% for plates up to 63 mm, calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, ensuring excellent weldability, similar to en 10025 3 s420n normalized structural steel plate.

Mechanical Properties of EN 10025 S355N

Gangsteel guarantees EN 10025 S355N specifications deliver top performance for structural applications:

Thickness (mm)	Yield Strength (min, MPa)	Tensile Strength (MPa)	Elongation (min, %)	Impact Energy (min, J @ -20°C)
≤16	355	470-630	22	27
16<t≤40	345	470-630	22	27
40<t≤63	335	470-630	22	27
63<t≤80	325	470-630	22	27
80<t≤100	315	470-630	22	27
100<t≤150	295	450-610	22	27
150<t≤200	285	450-610	22	27

Yield Strength: Starts at 355 MPa for thin plates, ideal for moderate-load structures like bridges.
Tensile Strength: 470-630 MPa ensures durability under tensile forces.
Elongation: ≥22% supports complex structural designs, offering better ductility than higher-strength grades like S460N.
Impact Toughness: ≥27 J at -20°C ensures reliability in moderate climates, comparable to en 10025 3 s355nl normalized structural steel plate.
Hardness: Typically 150-190 HB (Brinell), balancing machinability and durability.

Delivery Conditions and Specifications

Gangsteel provides EN 10025 S355N with specifications outlined in EN 10025-3:

Standard: EN 10025-3:2019.
Condition: Normalized or normalized rolled for consistent microstructure.
Thickness Range: 6–200 mm, with custom options up to 250 mm.
Widths: 2000, 2500, or 3000 mm.
Lengths: Up to 12,000 mm.
Surface: Hot-rolled, with optional priming for corrosion protection.
Certifications: EN 10204 3.1/3.2 certificates, ultrasonic testing (UT) per EN 10160, and approvals from ABS, LR, BV, or DNV.
Z-Quality: Optional Z15, Z25, or Z35 per EN 10164 for through-thickness properties, reducing lamellar tearing risk, similar to en 10025 3 s275n normalized structural steel plate.
Tolerances: Per EN 10029 for precision.

Welding and Heat Treatment

EN 10025 S355N specifications ensure excellent weldability with a low CEV (≤0.43%):

Welding: Compatible with GMAW and SAW per EN 1011-2. Preheating typically not required for plates <20 mm; optional for thicker plates (100-150°C); post-weld heat treatment (PWHT) at 550-650°C optional.
Consumables: ER70S-6 for GMAW, EM12K flux with EH14 wire for SAW.
Weld Quality: Matches en 10025 3 s355n normalized structural steel plate for reliable, high-strength joints.

Applications Leveraging EN 10025 S355N Specifications

Gangsteel supplies EN 10025 S355N for projects that rely on its specifications:

Bridges: Load-bearing components like girders and beams in moderate climates, leveraging 355 MPa yield strength.
Cranes: Structural parts for lifting equipment, benefiting from 470-630 MPa tensile strength.
Building Frameworks: Columns and trusses in temperate regions, supported by ≥22% elongation for complex designs.
Heavy Machinery: Durable components like chassis in industrial equipment, relying on -20°C toughness.

For colder climates requiring -50°C toughness, consider en 10025 3 s355nl normalized structural steel plate.

Why Choose Gangsteel?

Gangsteel is your trusted source for EN 10025 S355N:

Inventory: Extensive stock in China for rapid delivery.
Sizes: Thicknesses from 6–200 mm, widths up to 3000 mm, lengths up to 12,000 mm.
Delivery: Ships globally in 7-30 days.
Certifications: EN 10204 3.1/3.2, UT testing (EN 10160), and ABS/LR/BV/DNV approvals.
Processing: Cutting, welding, and bending tailored to your needs.

FAQ

What are the EN 10025 S355N specifications?
EN 10025 S355N specifications include a yield strength of ≥355 MPa, tensile strength of 470-630 MPa, ≥22% elongation, and ≥27 J impact toughness at -20°C.

How do EN 10025 S355N specifications perform in moderate climates?
EN 10025 S355N specifications, with ≥27 J impact toughness at -20°C, ensure reliability for bridges and cranes in temperate environments.

Is EN 10025 S355N weldable per its specifications?
Yes, EN 10025 S355N specifications include a CEV ≤0.43%, enabling easy welding with GMAW or SAW, often without preheating for thinner plates.

What applications use EN 10025 S355N specifications?
EN 10025 S355N specifications support bridges, cranes, building frameworks, and heavy machinery in moderate climates, leveraging high strength and ductility.

How do EN 10025 S355N specifications compare to S420N?
EN 10025 S355N has lower yield strength (355 MPa vs 420 MPa) than S420N, but offers higher elongation (≥22% vs ≥19%) for better formability.

What certifications support EN 10025 S355N specifications?
Gangsteel provides EN 10025 S355N with EN 10204 3.1/3.2, UT testing (EN 10160), and ABS/LR/BV/DNV approvals for global compliance.

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