JIS G4305 SUS 304 Cold Rolled Stainless Steel Coil Supplier

SUS304 Cold Rolled Stainless Steel Coil & Sheet | JIS G4305 304 Stainless Steel Strip Manufacturer & Exporter – Gangsteel

Gangsteel is a leading manufacturer and global exporter of premium JIS G4305 SUS304 cold rolled stainless steel coils, sheets, and strips. As the most widely used austenitic stainless steel grade (Grade 304 or UNS S30400), SUS304 offers an outstanding combination of excellent corrosion resistance, superior formability, weldability, and mechanical properties, making it the "workhorse" of stainless steels for diverse industrial and consumer applications.

Our state-of-the-art cold rolling facilities produce SUS304 with high-quality surface finishes (2B, BA, No.4, HL, Mirror), precise tolerances (±0.02 mm), and consistent performance fully compliant with JIS G4305 (Cold-rolled stainless steel plate, sheet and strip). Equivalent to ASTM A240/A666 Type 304, EN 1.4301 (X5CrNi18-10), and GB 06Cr19Ni10, Gangsteel's SUS304 products serve global markets in food processing, chemical equipment, architecture, appliances, automotive, and general fabrication.

This comprehensive product introduction details every key aspect of our JIS G4305 SUS304 cold rolled stainless steel — from composition and properties (presented in tables) to manufacturing, applications, advantages, and why Gangsteel is your trusted partner for reliable, high-volume supply.

Introduction to SUS304 Stainless Steel

SUS304 is a classic 18/8 chromium-nickel austenitic stainless steel, providing excellent general corrosion resistance in a wide range of atmospheric, chemical, and mildly corrosive environments. Its balanced alloying (18% Cr, 8% Ni) forms a stable passive chromium oxide layer that self-heals in oxidizing conditions, while nickel enhances ductility and low-temperature toughness.

Non-magnetic in the annealed state, SUS304 remains highly formable, weldable without post-weld annealing in most cases, and suitable for temperatures from cryogenic to ~870°C intermittent service. Gangsteel specializes in cold rolled SUS304, optimizing it for deep drawing, stamping, bending, polishing, and high-speed fabrication.

Chemical Composition of JIS G4305 SUS304

Chemical Composition Table

Gangsteel's production adheres to tight mid-range controls for optimal corrosion resistance and formability. Full chemical analysis and EN 10204 3.1 certificates are standard.

Mechanical Properties

In annealed condition per JIS G4305:

Mechanical Properties Table (Annealed)

SUS304 exhibits moderate work hardening, suitable for general forming without excessive strength gain.

Physical Properties

Physical Properties Table

These ensure excellent performance in thermal cycling and hygienic applications.

Equivalent Materials Comparison

Equivalent Materials Comparison Table

SUS304 is the benchmark austenitic grade, with equivalents offering near-identical performance.

Manufacturing Process: Cold Rolled at Gangsteel

Gangsteel's process: hot rolling to intermediate gauge, annealing/pickling, multi-pass cold reduction in Sendzimir/20-high mills, final bright annealing/skin pass, slitting/edge trimming. Thickness: 0.3–3.0 mm (coils/sheets). Width: 600–1524 mm. In-line controls ensure tight tolerances and superior surface quality.

Finishes: 2B (standard matte), BA (bright annealed), No.4/HL (brushed), Mirror. Protective films and custom slitting available.

Available Forms, Sizes, and Specifications

• Cold rolled coils: 0.3–3.0 mm thick, up to 1524 mm wide
• Cold rolled sheets: Cut-to-length up to 6000 mm
• Strips: Narrow from 10 mm

Compliant with JIS G4305; optional ASTM A240/EN cross-certification. Tolerances per JIS or tighter.

Key Applications of SUS304 Cold Rolled Products

SUS304 dominates in hygienic, corrosive, and decorative uses:

Food Processing and Kitchenware

• Sinks, countertops, utensils, appliances, brewing equipment
• Dairy, beverage, and pharmaceutical processing

Architectural and Decorative

• Elevator panels, handrails, cladding, signage
• Indoor/outdoor trim, furniture

Chemical and Industrial

• Tanks, piping, heat exchangers (mild chemicals)
• Automotive trim, exhaust parts

General Fabrication

• Conveyor belts, fasteners, springs, medical equipment

Its versatility suits food-grade, marine-adjacent, and architectural demands.

Advantages of Choosing SUS304 Stainless Steel

• Outstanding general corrosion resistance in atmospheric/mild environments
• Excellent formability, weldability, and polishability
• Good strength and toughness from cryogenic to elevated temperatures
• Hygienic, easy-to-clean surface for food/pharma
• Cost-effective vs. higher-alloy grades for most uses
• Non-magnetic annealed; recyclable and sustainable
• Wide availability and global acceptance

Corrosion and Oxidation Resistance

Forms stable Cr oxide layer; resists rust in fresh water, mild acids, organics, and atmospheres. Superior to carbon steel; adequate in chlorides (better with 316 for severe marine). Oxidation resistance up to ~870°C intermittent.

Weldability and Fabrication

Excellent weldability with TIG/MIG/resistance/laser; low carbon minimizes sensitization. Use ER308/308L fillers. High ductility supports complex forming without cracking.

Why Choose Gangsteel for SUS304 Cold Rolled Coils and Sheets?

• Advanced cold rolling with precision control
• Strict JIS G4305 compliance and full traceability
• Diverse finishes/stock for fast delivery
• Competitive pricing, flexible MOQ
• Export to 60+ countries with seaworthy packaging
• Technical support: selection, welding, specs
• ISO 9001 certified; third-party inspections (SGS/BV/TUV)

Quality Assurance and Certifications

Batch testing: chemical, mechanical, surface, dimensional. MTRs with heat traceability. Audits welcomed.

Packaging, Shipping, and Logistics

Coils eye-to-sky/wall on pallets, waterproof/edge-protected. Sheets skidded. Container/bulk shipping with tracking/insurance.

Conclusion: Partner with Gangsteel for Versatile SUS304 Solutions

SUS304 Cold Rolled Stainless Steel Coil & Sheetfrom Gangsteel, produced to JIS G4305, delivers proven reliability, corrosion resistance, and fabrication ease for countless applications. As a dedicated manufacturer and exporter, we ensure consistent quality and dedicated service worldwide.

Contact Gangsteel today for competitive quotes, samples, technical data sheets, or custom SUS304 cold rolled stainless steel coils, sheets, and strips. Trust us to elevate your projects with the world's most trusted stainless grade.