JIS G4305 SUS 301 Cold Rolled Stainless Steel Coil Supplier

SUS301 Cold Rolled Stainless Steel Coil & Sheet | JIS G4305 301 Stainless Steel Strip Manufacturer & Exporter – Gangsteel

Gangsteel is a leading manufacturer and global exporter of premium JIS G4305 SUS301 cold rolled stainless steel coils, sheets, and strips. Known as Grade 301 or UNS S30100, SUS301 is a high-strength austenitic chromium-nickel stainless steel renowned for its exceptional work-hardening capability, allowing dramatic increases in tensile strength and hardness through cold rolling or forming—making it ideal for applications requiring high strength combined with good ductility and moderate corrosion resistance.

Our advanced cold rolling facilities produce SUS301 in various tempers (annealed, 1/4H, 1/2H, 3/4H, Full Hard) with superior surface finishes (2B, BA, No.4, HL, Mirror), tight tolerances, and consistent properties fully compliant with JIS G4305 (Cold-rolled stainless steel plate, sheet and strip). Equivalent to ASTM A666 Type 301, EN 1.4310, and GB 12Cr17Ni7, Gangsteel's SUS301 products serve demanding industries including automotive springs, fasteners, aerospace components, medical instruments, architectural elements, and precision fabrication worldwide.

This comprehensive product introduction details every aspect of our JIS G4305 SUS301 cold rolled stainless steel — from composition and properties (in tables) to manufacturing, applications, advantages, and why Gangsteel is your trusted partner for high-performance, reliable supply.

Introduction to SUS301 Stainless Steel

SUS301 is an austenitic stainless steel with reduced chromium (16-18%) and nickel (6-8%) compared to SUS304, optimized for rapid work hardening. This enables achievable tensile strengths over 1800 MPa in full-hard conditions while retaining good formability in softer tempers. It offers corrosion resistance similar to 304 in mild environments but excels where high strength-to-weight ratio is critical.

Non-magnetic in annealed condition, SUS301 becomes weakly magnetic after cold working due to strain-induced martensite. It cannot be hardened by heat treatment but responds excellently to cold deformation.

Gangsteel specializes in precision cold rolled SUS301, tailoring tempers for stamping, deep drawing, bending, spring forming, and welding in high-performance applications.Chemical Composition of JIS G4305 SUS301

Chemical Composition Table

Gangsteel's production keeps values in optimal ranges for maximum work hardening and consistent performance. Full chemical analysis and EN 10204 3.1 certificates are provided.

Mechanical Properties

In annealed condition per JIS G4305:

Mechanical Properties Table (Annealed)

Cold-Worked Tempers(common at Gangsteel):

• 1/4 Hard: Rm ≈ 860–1000 MPa, Rp0.2 ≈ 515 MPa, Elongation ≈ 25–40%
• 1/2 Hard: Rm ≈ 1035–1200 MPa, Rp0.2 ≈ 760–930 MPa, Elongation ≈ 10–18%
• 3/4 Hard: Rm ≈ 1205–1380 MPa, Rp0.2 ≈ 930–1100 MPa, Elongation ≈ 5–12%
• Full Hard: Rm ≈ 1275–1800+ MPa, Rp0.2 ≈ 965–1400 MPa, Elongation ≈ 3–9%

SUS301's high work-hardening rate (up to 14 MPa per % reduction) enables custom strength levels.

Physical Properties

Physical Properties Table

These support stability in temperature-fluctuating environments.

Equivalent Materials Comparison

Equivalent Materials Comparison Table

SUS301 offers higher strength potential than 304 while maintaining similar corrosion resistance in mild conditions.

Manufacturing Process: Cold Rolled at Gangsteel

Gangsteel's process: hot rolling to intermediate gauge, annealing/pickling, multi-pass cold reduction in precision mills, final annealing/skin pass for tempers, slitting/edge trimming. Thickness: 0.1–3.0 mm (coils/sheets). Width: 10–1524 mm. In-line gauge (±0.01–0.02 mm) and surface inspection ensure quality.

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

Available Forms, Sizes, and Specifications

• Cold rolled coils: 0.1–3.0 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 A666/EN cross-certification. Temper options: annealed to full hard.

Key Applications of SUS301 Cold Rolled Products

SUS301 excels in high-strength, formed components:

Automotive and Transportation

• Spring clips, fasteners, seat belt components, exhaust gaskets
• Structural reinforcements, trim

Aerospace and Precision Engineering

• Aircraft fittings, springs, diaphragms
• High-strength fasteners

Medical and Instruments

• Surgical tools, hypodermic needles, orthodontic wires
• Precision springs

Architectural and Consumer

• Decorative trim, conveyor belts, hose clamps
• Kitchen utensils requiring durability

Its strength and formability suit demanding fabrication.

Advantages of Choosing SUS301 Stainless Steel

• Exceptional work hardening for ultra-high strength
• Good corrosion resistance in mild environments
• Excellent formability in annealed/quarter-hard tempers
• Cost-effective vs. higher-alloy grades for strength needs
• Weldable with austenitic fillers (e.g., ER308)
• Polishes to high luster for aesthetics
• Reliable fatigue resistance in springs

Corrosion and Oxidation Resistance

Moderate resistance to atmospheric and mild corrosives; similar to 304 but lower in chlorides/acids. Oxidation resistance up to ~870°C intermittent.

Weldability and Fabrication

TIG/MIG/resistance welding compatible; low carbon minimizes sensitization. Annealing post-weld for critical uses. High ductility enables complex shapes.

Why Choose Gangsteel for SUS301 Cold Rolled Coils and Sheets?

• Precision temper control and advanced mills
• Strict JIS G4305 compliance, full traceability
• Wide temper/finish/stock options
• Competitive pricing, flexible MOQ
• Export to 60+ countries, seaworthy packaging
• Technical support: temper selection, welding, specs
• ISO 9001 certified; third-party inspections

Quality Assurance and Certifications

Testing per batch: chemical, mechanical, surface, dimensional. MTRs with traceability. Audits welcomed.

Packaging, Shipping, and Logistics

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

Conclusion: Partner with Gangsteel for High-Strength SUS301 Solutions

SUS301 Cold Rolled Stainless Steel Coil & Sheetfrom Gangsteel, produced to JIS G4305, delivers unmatched strength, versatility, and reliability for precision applications. As a dedicated manufacturer and exporter, we provide consistent quality and service worldwide.

Contact Gangsteel for quotes, samples, datasheets, or custom SUS301 cold rolled stainless steel coils, sheets, and strips. Elevate your projects with our premium, high-performance solutions.