S315MC Hot-Rolled Steel Plate: Core Specifications And Key Information

S315MC steel plate is a thermomechanically rolled high-yield-strength structural steel plate compliant with EN 10149-2:2013, designed for cold forming applications. It balances strength, formability and cost-effectiveness, making it a preferred choice for industrial structural parts.

Basic Parameters

Compliant Standard: EN 10149-2:2013 (European standard for cold-forming high-yield-strength hot-rolled steel)

Thickness Range: 1.5–20mm (customizable for special thicknesses with suppliers)

Width & Length: Common widths 1250mm/1500mm/2000mm; lengths 6000mm–12000mm (customizable)

Delivery Condition: Thermomechanically rolled (TMR, marked as "MC" in the grade)

Surface Treatment: Hot-rolled black surface, or pickled and oiled (PO) (for rust prevention and subsequent processing)

Excellent Cold Formability: Suitable for stamping, bending, rolling and other complex cold-forming processes; 180° cold bending (bend radius ≥1.5× thickness) without cracking.

Good Weldability: Low carbon equivalent (CEV ≤0.38%), compatible with MIG/MAG, TIG, resistance welding and other common methods; no preheating required for plates ≤12mm.

Balanced Strength & Toughness: Resists impact and fatigue, reducing structural failure risks in high-load scenarios.

Cost-Effective Lightweight: Higher strength than ordinary carbon steel (e.g., Q235), enabling 5–10% thickness reduction for lightweight design.

S315MC steel plate is widely used in industries requiring cold forming and medium strength:

Automotive Industry: Chassis components (subframes, crossbeams), structural reinforcements, door frames, seat frames.

Construction Machinery: Brackets, guards, lightweight structural parts for excavators, loaders and agricultural machinery.

Warehousing & Logistics: Shelf columns/beams, conveyor frames (requires stiffness and durability).

General Structure: Supports, frames, prefabricated structural parts (requires good weldability and cost-effectiveness).

Cutting: Flame cutting, plasma cutting or laser cutting are applicable; preheat plates >12mm to 80–150℃ to avoid edge hardening.

Cold Forming: Control bending radius and avoid excessive repeated forming to prevent work hardening-induced brittleness.

Welding: Use low-carbon matching welding consumables; control heat input (20–35kJ/cm) to avoid heat-affected zone (HAZ) brittleness.

Storage: Store in a dry, well-ventilated warehouse; PO-surface plates have 3–6 months of rust protection; long-term storage requires additional rust-proof packaging.

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