Properties Of S275JR+AR Thick Plate and Surface Quality Treatment For S275JR+AR

Properties Of S275JR+AR Thick Plate And Surface Quality Treatment For S275JR+AR is manufactured and supplied strictly in accordance with EN 10025-2 for heavy structural fabrication requiring predictable mechanical strength, excellent weldability, and consistent processing behavior.

CTL&SL

Grinding Polishing

Cutting

Beveling

Forming

Maching

Auto Welding

Heat treatment

Painting

Engineering Services

S275 and S275JR steel chemical composition - ladle analysis

S275 and S275JR steel mechanical properties

S275JR carbon steel plate equivalent grades

Dimensional Availability & Delivery Specifications

As-Rolled (+AR) delivery condition eliminates unnecessary heat treatment processes, offering cost-effective material handling for standard fabrication.

Controlled carbon equivalent (CEV) enables direct field welding using FCAW, SMAW, or GMAW without extensive preheating under standard thickness conditions.

Produced via secondary ladle refining and vacuum degassing, ensuring minimal non-metallic inclusions and consistent transverse impact properties.

Features uniform hot-rolled mill scale for basic atmospheric protection during inland storage, with full option for factory blast cleaning and priming.

To assist structural engineers and procurement managers in selecting the exact sub-grade for specific environmental conditions:

S275JR (+20°C Impact Test): Ideal for general indoor industrial structures, ambient-temperature building frames, and standard secondary structural elements.

S275J0 (0°C Impact Test): Recommended for outdoor structures exposed to moderate cold weather, outdoor crane girders, and bridge components.

S275J2 (-20°C Impact Test): Designed for low-temperature environments, off-shore structures, and critical load-bearing assemblies requiring high notch toughness against brittle fracture.

Advanced Surface Preparation
Shot Blasting: Factory shot-blasting to Sa 2.5 cleanliness standard according to ISO 8501-1.

Shop Priming: Automated application of weldable, low-zinc oxide shop primers (15–25 microns) to prevent rusting during long-distance ocean transit and temporary site storage.

Precision Cutting & Beveling
CNC Flame / Plasma Cutting: Custom plate profiling to DXF/DWG drawings with strict dimensional accuracy.

Weld Edge Preparation: Machine-cut or bevel-milled V-grooves, X-grooves, and U-grooves (30°, 37.5°, 45°) for immediate robotic or manual site welding.

Non-Destructive Testing (NDT)
Ultrasonic Testing (UT): In-house NDT executed in accordance with EN 10160 (Quality Classes S0E0, S1E1, S2E2) to guarantee internal sound structural integrity for thick-plate welded joints.

Traceability: Heat number and plate number hard-stamped on every plate and linked directly to the Mill Test Certificate (MTC).

In-House Testing Facility: Equipped with spectrographs, universal tensile testing machines, Charpy impact testers, and digital UT flaw detectors.

Third-Party Inspection: Fully supporting independent inspection and sampling by SGS, Bureau Veritas (BV), Intertek, or Lloyd's Register prior to loading.

Export Certification: EN 10204 3.1 MTC issued with shipment; EN 10204 3.2 available via third-party endorsement.

Protection: Steel strapping with heavy-duty edge protectors; water-proof plastic wrapping and rust-inhibiting coating for long-distance sea shipping.

Shipping Options: Breakbulk cargo vessel loading for oversized thick plates, flat-rack containers, or standard containerized loading (20GP/40GP).

Standard Lead Time: 15–25 days for standard stock sizes; 30 days for customized cutting, beveling, and surface shot blasting treatment.

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