Stainless steel coil grade 304

Description

Product Overview
This AISI 304 stainless steel coil is a austenitic chromium-nickel alloy engineered for exceptional corrosion resistance and formability. It serves as the backbone for process equipment, architectural cladding, and food-grade systems across heavy industries. Its ability to maintain structural integrity in chemically aggressive environments reduces lifecycle replacement costs by 30–40%. As global supply chains prioritize materials that balance durability with regulatory compliance (FDA, EU10/2011), 304 coil remains the most strategically liquid and versatile asset in the flat-rolled stainless market.

Key Specifications & Technical Characteristics

• Chemical composition (wt%) : Cr 18.0–20.0, Ni 8.0–10.5, C ≤0.08, Mn ≤2.0, Si ≤1.0, P ≤0.045, S ≤0.030, balance Fe.

• Purity / metallurgical integrity : Dual-certified to ASTM A240 and EN 10088-2; inclusion rating ≤1.5 (ASTM E45).

• Physical characteristics : Cold-rolled annealed & pickled finish (2B); thickness 0.3–3.0 mm, width 1000–1500 mm; density 8.00 g/cm³.

• Packaging : Moisture-resistant paper interleaved, sea-worthy wooden pallets, steel strapping, edge protectors.

• Shelf life : Indefinite under dry, covered storage; no degradation of mechanical properties.

Core Industrial Applications

• Food & beverage processing – Tanks, heat exchangers, conveyors. Outperforms coated carbon steel via zero pitting in CIP (clean-in-place) chemical cycles.

• Pharmaceutical & biotech – Cleanroom ducting and vessel linings; non-reactive surface eliminates product contamination risk.

• Chemical & petrochemical – Exhaust systems, scrubbers, pressure vessels. 304’s work-hardening rate resists fatigue cracking under cyclic thermal loads.

• Architectural construction – Elevator panels, handrails, curtain walls. Provides 3× the yield strength of 200-series substitutes while maintaining uniform grain structure for brushing/polishing.

Competitive Advantages

• Quality consistency – In-line eddy current testing (ASTM E426) with batch-wise coil certificate (EN 10204 3.1). Rejection rate <0.2%.

• Supply reliability – Three dedicated melt shops with 45-day rolling forecast visibility; safety stock held in Rotterdam, Houston, and Shanghai.

• Logistics capability – Just-in-time delivery within ±3 days for 20+ metric ton (MT) orders; multimodal trackable portal.

• Price competitiveness – Direct mill allocation removes 2-3 intermediary margins; fixed price windows for quarterly contracts.

• Sustainability – Average 85% recycled content; EPD-certified; low embodied carbon (2.1 kg CO₂/kg vs. industry avg 3.4 kg).

• Technical support – On-call metallurgist support, weld procedure qualification pack, and FEA simulation files (DXF/STEP) provided.

Commercial & Supply Information

• Minimum order quantity (MOQ) : 20 MT (mixed width/thickness allowed within one heat number).

• Loading capacity : Standard 20-foot GP container – 22 MT (coils edge-stacked with dunnage); 40-foot HC container – 25 MT max.