321 Stainless Steel Coil (SS 321 Coil) is a high-quality austenitic stainless steel alloy stabilized with titanium, providing excellent resistance to intergranular corrosion after exposure to high temperatures. Produced by Jiangsu Cunrui Metal Products Co., Ltd., our 321 stainless steel coils comply with ASTM A240, AISI, JIS, and EN standards, ensuring consistent reliability for demanding applications.
With superior mechanical strength, stable chemical composition, and outstanding heat resistance, SS 321 Coil is suitable for both industrial and decorative purposes. Each batch is delivered with mill test certificates (MTC), material reports, and optional third-party inspection (SGS, BV, TUV) to guarantee quality and traceability.
Key Advantages
Excellent High-Temperature Resistance: Titanium stabilization prevents carbide precipitation during welding and prolonged heat exposure.
Outstanding Corrosion Resistance: Particularly effective in chemical, marine, and high-temperature environments.
Stable Mechanical Properties: High tensile strength, elongation, and hardness ensure long service life.
Versatile Surface Finishes: Available in 2B, BA, No.1, No.4, HL, and mirror finishes for multiple applications.
International Quality Compliance: Certified to ASTM, ISO, and other global standards.
Applications of SS 321 Coil
Aerospace & Aviation: Heat-resistant components and jet engine parts.
Chemical & Petrochemical: Reactor vessels, heat exchangers, piping systems.
Power Generation: Boiler tubes, turbine parts, and exhaust systems.
Food & Pharmaceutical Processing: Equipment exposed to high temperatures and corrosive cleaning agents.
General Fabrication: Industrial machinery, welded components, and decorative panels.
Product Specifications & Technical Data
Basic Information
|
Parameter |
Details |
|
Grade |
321 Stainless Steel (SS 321 Coil) |
|
Standards |
ASTM A240 / AISI 321 / JIS SUS321 / EN 1.4541 |
|
Surface Finish |
2B, BA, No.1, No.4, HL, Mirror |
|
Thickness Range |
0.3 mm – 12 mm (customized) |
|
Width Range |
600 mm – 2000 mm |
|
Length / Coil ID |
As required (coil ID: 508 mm / 610 mm standard) |
|
Tensile Strength |
520 – 750 MPa |
|
Yield Strength |
≥ 205 MPa |
|
Elongation |
≥ 40% |
|
Hardness |
≤ 160 HB |
Chemical Composition
|
Element |
Content (%) |
|
C |
≤ 0.08 |
|
Mn |
≤ 2.0 |
|
Si |
≤ 1.0 |
|
P |
≤ 0.045 |
|
S |
≤ 0.03 |
|
Cr |
17.0 – 19.0 |
|
Ni |
9.0 – 13.0 |
|
Ti |
≥ 5 × C (stabilizer to prevent carbide precipitation) |
|
Fe |
Balance |
Customization Services
Support for non-standard thickness, width, and coil ID.
Processing options: slitting, cutting, edge trimming, polishing, and coating.
Fabrication support: bending, welding, punching, or other custom requirements according to drawings.
Multiple stainless steel grades available for special project needs.
Flexible MOQ to accommodate trial orders or bulk shipments.
Price & Delivery
Competitive pricing with bulk order discounts.
Standard sizes available in stock for immediate shipment.
Custom orders typically delivered within 7–15 working days.
Export-standard packaging ensures safe international transport.
Our Strength
Advanced production lines with cold-rolling, annealing, and polishing capabilities.
Annual production capacity exceeding 50,000 MT for global export.
Over 10 years of export experience with clients worldwide.
Certifications: ISO 9001, SGS, BV, TUV, complying with international quality standards.
Professional R&D and technical team providing guidance and material solutions.
Service & Support
Fast inquiry response within 12 hours.
Professional technical consultation for material selection and application.
Export-standard coil packaging with protective film and wooden pallets.
After-sales support including replacement or refund in case of verified quality issues.
Long-term partnership approach for international buyers.
FAQ
Q1: What is the main difference between SS 321 and SS 304?
A1: SS 321 contains titanium stabilization, preventing carbide precipitation at high temperatures, giving it superior intergranular corrosion resistance compared to SS 304.
Q2: Can I order custom dimensions?
A2: Yes, thickness, width, coil ID, and processing can be customized according to your drawings.
Q3: Are inspection and certificates available?
A3: Yes, MTC, ISO, SGS, BV, and TUV reports are available for all batches.
Q4: What surface finishes are available?
A4: 2B, BA, No.1, No.4, HL, and mirror finishes are available.
Q5: How fast is the delivery?
A5: Standard sizes can be shipped immediately; custom orders ship within 7–15 working days.
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