JIS G4305 SUS 430J1L Cold Rolled Stainless Steel Coil Supplie

430J1L Cold Rolled Stainless Steel Coil & Sheet | JIS G4305 430J1L Stainless Steel Strip Manufacturer & Exporter – Gangsteel

Gangsteel is a leading manufacturer and global exporter of premium JIS G4305 430J1L cold rolled stainless steel coils, sheets, and strips. As an ultra-low-carbon, titanium-stabilized ferritic grade (commonly known as 430J1L or SUS430J1L), 430J1L delivers exceptional deep-drawability, minimal ridging during forming, superior weldability, and reliable corrosion resistance in mild environments. With carbon limited to ≤0.025% and strategic titanium stabilization, it significantly outperforms standard SUS430 and even 430LX in complex stamping operations while maintaining cost-effectiveness and moderate oxidation resistance up to 850°C.

Our state-of-the-art cold rolling facilities produce 430J1L with high-quality surface finishes (2B, BA, No.4, HL), tight tolerances (±0.02 mm), and consistent properties fully compliant with JIS G4305 (Cold-rolled stainless steel plate, sheet and strip). Equivalent to ASTM A240 low-carbon 430 variants, EN 1.4510 (X3CrTi17), and GB 022Cr17Ti, Gangsteel's 430J1L products serve high-volume industries worldwide including washing machine drums, dishwasher tubs, kitchen sinks, automotive trim, exhaust components, and decorative architectural panels requiring severe deep drawing and welding.

This comprehensive product introduction details every aspect of our JIS G4305 430J1L cold rolled stainless steel — from composition and properties (in tables) to manufacturing, applications, advantages, and why Gangsteel is your trusted partner for reliable, ultra-formable ferritic supply.

Introduction to 430J1L Stainless Steel

430J1L is a specialized titanium-stabilized, ultra-low-carbon ferritic stainless steel engineered for maximum press-formability and weldability. The ultra-low carbon content (≤0.025%) combined with titanium stabilization prevents intergranular corrosion and eliminates ridging (orange-peel effect) during deep drawing — problems common in standard SUS430. This results in superior surface quality after forming and the ability to produce highly complex shapes without intermediate annealing.

Magnetic in all conditions and non-hardenable by heat treatment, 430J1L offers corrosion resistance comparable to SUS430 in atmospheric and mild chemical environments, plus moderate oxidation resistance. Gangsteel specializes in cold rolled 430J1L, delivering material optimized for high-speed stamping, roll forming, welding, and polishing in mass-production appliance and automotive applications.

Chemical Composition of JIS G4305 430J1L

Chemical Composition Table

Gangsteel's production maintains precise titanium stabilization and ultra-low carbon for maximum deep-drawing performance. Full chemical analysis and EN 10204 3.1 certificates are standard.

Mechanical Properties

In annealed condition per JIS G4305:

Mechanical Properties Table (Annealed)

430J1L exhibits extremely low work-hardening and outstanding formability, enabling complex pressings without cracking or ridging.

Physical Properties

Physical Properties Table

These properties ensure excellent thermal conductivity and dimensional stability in appliance and exhaust applications.

Equivalent Materials Comparison

Equivalent Materials Comparison Table

430J1L offers even better ridging resistance and formability than 430LX or standard SUS430.

Manufacturing Process: Cold Rolled at Gangsteel

Gangsteel's process: hot rolling to intermediate thickness, annealing/pickling, multi-pass cold reduction in precision 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 defect-free surfaces.

Finishes: 2B (standard matte), BA (bright annealed), No.4/HL (brushed). 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 430J1L Cold Rolled Products

430J1L excels in severe deep-drawing and welded applications:

Home Appliances

• Washing machine drums, dishwasher tubs, range hood panels
• Refrigerator liners, microwave components

Automotive

• Exhaust flanges, muffler shells, heat shields
• Trim and decorative parts

Architectural and Decorative

• Elevator panels, handrails, indoor cladding
• Kitchen sinks and utensils

General Fabrication

• Hose clamps, conveyor components
• Food service equipment (indoor use)

Its ultra-formability makes it dominant in high-volume stamping.

Advantages of Choosing 430J1L Stainless Steel

• Exceptional deep-drawability with minimal ridging
• Outstanding weldability without post-weld treatment
• Excellent surface quality after forming
• Cost-effective ferritic alternative to austenitics
• Good corrosion resistance in mild environments
• Magnetic for easy recycling
• Moderate oxidation resistance up to 850°C

Corrosion and Oxidation Resistance

Forms stable chromium oxide layer; resists atmospheric corrosion, fresh water, and mild acids. Titanium stabilization eliminates intergranular corrosion risk. Oxidation resistance up to ~850°C intermittent.

Weldability and Fabrication

Superior weldability for a ferritic grade; ultra-low carbon and titanium prevent grain growth and sensitization. TIG, MIG, and resistance welding compatible. High ductility supports complex deep drawing without cracking.

Why Choose Gangsteel for 430J1L Cold Rolled Coils and Sheets?

• Precision cold rolling with advanced mills
• Strict JIS G4305 compliance and traceability
• Diverse finishes/stock for fast delivery
• Competitive pricing, flexible MOQ
• Export to 60+ countries with seaworthy packaging
• Technical support: forming/welding advice, 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 with tracking/insurance.

Conclusion: Partner with Gangsteel for Ultra-Formable 430J1L Solutions

430J1L Cold Rolled Stainless Steel Coil & Sheetfrom Gangsteel, produced to JIS G4305, delivers unmatched deep-drawability, weldability, and surface quality for complex stamped components. 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 430J1L cold rolled stainless steel coils, sheets, and strips. Trust us for premium ultra-low-carbon, titanium-stabilized ferritic stainless solutions.