S460N Z35 Toughness

S460N Z35 Toughness

At Gangsteel, we’re excited to delve into the S460N Z35 toughness, a standout feature of this high-strength, low-alloy structural steel under EN 10025-3, enhanced with Z35 quality for superior through-thickness ductility. S460N Z35 is designed to prevent lamellar tearing in heavy welded structures, making it ideal for demanding applications like bridges, cranes, and offshore platforms in moderate climates.

As part of the en 10025 3 normalized steel plate family, S460N Z35 offers a minimum yield strength of 460 MPa, -20°C toughness, and ≥35% reduction of area through thickness per EN 10164. Gangsteel explores S460N Z35 toughness, its chemical composition, mechanical properties, and applications, comparing it 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.

What is S460N Z35?

S460N Z35 is a high-strength structural steel under EN 10025-3, with Z35 quality per EN 10164, ensuring ≥35% reduction of area through thickness to prevent lamellar tearing in heavy welds. Its designation, also known as material number 1.8901 with Z35, breaks down as:

• S: Structural steel.
• 460: Minimum yield strength of 460 MPa (≤16 mm).
• N: Normalized or normalized rolled, tested for impact toughness at -20°C.
• Z35: ≥35% reduction of area in through-thickness tensile testing.

The normalization process refines the grain structure, and Z35 quality enhances ductility, making S460N Z35 ideal for thick plates in welded structures. Compared to en 10025 3 s355n normalized structural steel plate, S460N Z35 offers higher strength and superior weld reliability.

Chemical Composition Supporting S460N Z35 Toughness

Gangsteel ensures S460N Z35 meets EN 10025-3 and EN 10164 standards for optimal toughness:

Carbon Equivalent (CEV): Capped at 0.48% for plates up to 63 mm, calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15, ensuring weldability. Low sulfur (≤0.025%) and phosphorus (≤0.030%) minimize inclusions, critical for S460N Z35 toughness in heavy welds, similar to en 10025 3 s420n normalized structural steel plate.

Mechanical Properties of S460N Z35

Gangsteel guarantees S460N Z35’s mechanical properties, including its superior through-thickness toughness:

• Yield Strength: Starts at 460 MPa for thin plates, ideal for heavy loads in structures like bridges.
• Tensile Strength: 540-720 MPa ensures durability under high tensile forces.
• Elongation: ≥17% supports complex structural designs.
• Impact Toughness: ≥27 J at -20°C ensures reliability in moderate climates, outperforming en 10025 3 s355n normalized structural steel plate.
• Z35 Toughness: ≥35% reduction of area through thickness (EN 10164) prevents lamellar tearing in heavy welds, critical for thick plates (>40 mm).
• Hardness: Typically 170-210 HB (Brinell), balancing machinability and durability.

Z-Test for S460N Z35 Toughness

The Z-test per EN 10164 measures through-thickness ductility to prevent lamellar tearing:

• Z35 Requirement: ≥35% reduction of area in tensile tests on cylindrical samples from the plate thickness.
• Purpose: Ensures no internal defects (e.g., inclusions or laminations) in thick plates under heavy welding stresses.
• Application: Critical for welded structures like bridge girders or crane components where thick plates are joined perpendicularly.

Delivery Conditions and Specifications

Gangsteel provides S460N Z35 with specifications outlined in EN 10025-3 and EN 10164:

• Standard: EN 10025-3:2019 (base properties) and EN 10164 (Z-quality).
• 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, Z-test certification per EN 10164, and approvals from ABS, LR, BV, or DNV.
• Z-Quality: Z35 (≥35% reduction of area), with Z15 or Z25 available, similar to en 10025 3 s275n normalized structural steel plate.
• Tolerances: Per EN 10029 for precision.

Welding and Heat Treatment

S460N Z35 toughness supports excellent weldability with a low CEV (≤0.48%):

• Welding: Compatible with GMAW and SAW per EN 1011-2. Preheating (100-150°C) for plates >20 mm; post-weld heat treatment (PWHT) at 550-650°C optional.
• Consumables: ER70S-6 for GMAW, EM12K flux with EH14 wire for SAW.
• Weld Quality: Z35 quality minimizes lamellar tearing in heavy welds, matching en 10025 3 s460n normalized structural steel plate for reliability.

Applications Leveraging S460N Z35 Toughness

Gangsteel supplies S460N Z35 for projects requiring high through-thickness toughness:

• Bridges: Thick plate girders and beams with heavy welds, ensuring structural integrity in moderate climates.
• Cranes: High-strength welded components like booms and frames, leveraging Z35 ductility to prevent weld failures.
• Offshore Structures: Welded joints in platforms, where Z35 toughness ensures durability under cyclic loading.
• Heavy Machinery: Robust welded components like chassis, benefiting from Z35’s resistance to lamellar tearing.

For colder climates requiring -50°C toughness, consider en 10025 3 s460nl normalized structural steel plate.

Why Choose Gangsteel?

Gangsteel is your trusted source for S460N Z35:

• 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), Z-test (EN 10164), and ABS/LR/BV/DNV approvals.
• Processing: Cutting, welding, and bending tailored to your needs.

Contact us for en 10025 3 s460n normalized structural steel plate.

FAQ

What is S460N Z35 toughness?
S460N Z35 toughness includes ≥27 J impact energy at -20°C and ≥35% reduction of area through thickness (EN 10164), preventing lamellar tearing in heavy welds.

How does S460N Z35 toughness benefit welds?
S460N Z35’s ≥35% through-thickness ductility minimizes lamellar tearing in thick plates (>40 mm), ensuring reliable welds in bridges and cranes.

Is S460N Z35 weldable?
Yes, S460N Z35’s CEV ≤0.48% supports GMAW/SAW welding with preheating (100-150°C for >20 mm), enhanced by Z35 quality for weld integrity.

What applications use S460N Z35 toughness?
S460N Z35 toughness supports bridges, cranes, offshore platforms, and heavy machinery with heavy welds in moderate climates.

How does S460N Z35 compare to S355N?
S460N Z35 has higher yield strength (460 MPa vs 355 MPa) and Z35 through-thickness toughness, ideal for critical welded structures.

What certifications support S460N Z35 toughness?
Gangsteel provides S460N Z35 with EN 10204 3.1/3.2, UT testing (EN 10160), Z-test (EN 10164), and ABS/LR/BV/DNV approvals.