Technical Details Summary
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Manufacturing Process: Cold rolling (CR) on Sendzimir mill equipment, hot rolling (HR), bright annealing, continuous tension leveling, precision slitting, and edge trimming.
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Dimensional Range: Thicknesses from 0.05 mm to 12.5 mm; widths from 5 mm (narrow strip) up to 2000 mm; continuous coil weights up to 15 Metric Tons.
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Manufacturing Standards: Fully compliant with ASTM A240, ASME SA240, EN 10088-2, ISO 15156, and NACE MR 01-75.
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Available Grades: Austenitic (304, 304L, 316, 316L, 316Ti, 321), Ferritic/Martensitic (409, 409L, 409M, 410, 410S, 430, 441), and Light Alloy (Aluminium Alloy 6063 Coils Strips).
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Quality & Verification: EN 10204 3.1 Mill Test Certification, Intergranular Corrosion Testing, Spectro Chemical Analysis, Tensile/Elongation Verification, and PMI Testing.
Stainless Steel Coils Specifications
Detailed dimensional parameters, manufacturing methods, and standard supply capabilities offered by Trident Metal & Alloys.
| Specification Parameter | Manufacturing Capabilities & Supply Limits |
|---|---|
| Thickness Range | Cold-Rolled Precision Strip: 0.05 mm to 3.0 mm; Hot-Rolled Slit Coils: 2.5 mm to 12.5 mm |
| Width Variations | Slit Strip Widths: 5 mm to 600 mm; Full Mill Widths: 1000 mm, 1220 mm, 1250 mm, 1500 mm, 2000 mm |
| Coil ID & OD | Inner Diameter (ID): 300 mm, 400 mm, 508 mm, 610 mm; Outer Diameter (OD) up to 1800 mm |
| Form Variations | Continuous Mill Coils, Slit Strip Coils, Oscillate/Traverse Wound Coils, De-coiled Flat Strips |
| Austenitic Series | ASTM A240 304, 304L, 316, 316L, 316Ti, 321 |
| Ferritic & Martensitic Series | ASTM A240 409, 409L, 409M, 410, 410S, 430, 441 |
| Non-Ferrous Light Alloy | Aluminium Alloy 6063 Coils Strips |
| Surface Finish Options | 2B (Cold Rolled), No. 1 (Hot Rolled), BA (Bright Annealed), No. 4 (Satin/Brushed), 8K Mirror, Matt, PVC Coated Film |
| Edge Condition | Mill Edge, Slit Edge, Deburred Edge, Rounded Edge, Beveled Edge |
| Available Aluminium Alloys Grades | Aluminium Alloys (1000, 2000, 3000, 4000, 5000, 6000, 7000 & 8000 Series Coils) |
Stainless Steel Coils Overview
Trident Metal & Alloys is an established Stainless Steel Coils Manufacturer in India. We engineer continuous cold-rolled precision strips and hot-rolled heavy gauge master coils designed for high-speed automated stamping, continuous tube welding, and deep drawing operations.
Our continuous coil stock delivers uniform gauge tolerances across full production runs, eliminating material jam-ups on progressive die presses and roll-forming lines. Every coil is tension-leveled to guarantee flat lay-flat characteristics after uncoiling, reducing scrap rate during downstream blanking and slitting—making them a perfect partner to our cut-to-size Stainless Steel Sheets & Plates for complete fabrication projects.
As a high-capacity Stainless Steel Coils Supplier in India, we maintain active inventory ranging from narrow precision Stainless Steel Strip Coil stock up to full-width 2000 mm master rolls. Each consignment is shipped with complete EN 10204 3.1 Mill Test Certificates (MTCs) and adheres strictly to ASTM, ASME, and DIN material specifications.
Stainless Steel Coils Grades & Standards
| Alloy Grades | Category | Characteristics & Practical Uses |
|---|---|---|
| 304 / 304L | Austenitic Standard | Deep-drawing workhorse; forms smoothly into cookware, sinks, and welded tubing without tearing or cracking. |
| 316 / 316L | Marine & Chemical | Saltwater and acid defender; molybdenum additions protect marine hardware and chemical processing tanks from pitting. |
| 316Ti | Titanium-Stabilized | Titanium addition holds structural strength under continuous heating, preventing intergranular decay in heavy heat exchangers. |
| 321 | High-Temp Austenitic | Stabilized grade engineered for continuous thermal cycling up to 870°C in aircraft manifolds and industrial exhaust flex pipes. |
| 409 / 409L / 409M | Utility Exhaust | High heat-scale resistance and high formability built specifically for automotive mufflers, catalytic converters, and manifold tubes. |
| 410 / 410S | Martensitic Wear | Heat-treatable hardenable alloy providing high mechanical strength for valve components, brake discs, and cutlery stampings. |
| 430 | Decorative Ferritic | Nickel-free magnetic steel; mirror-finish option provides high shine and thermal stability for home appliances and architectural trim. |
| 441 | Protected Architectural | Titanium-niobium stabilized ferritic coil with protective PVC film; ideal for solar panel framing, roofing, and outdoor wall cladding. |
| Aluminium Alloy 6063 | Light Structural | Lightweight aluminum strip offering high extrusion response, anodizing quality, and electrical conductivity for architectural frames. |
Key Advantages of Stainless Steel Coils
Seamless CNC & Stamping Feed
Continuous coil feeding speeds up progressive press lines, reducing setup delays and material waste compared to sheet feeding.
Tight Gauge Control Across Batches
Precision cold-rolling guarantees tight thickness consistency from outer turn to inner core, protecting your stamping dies.
Clean Edges & Zero Burr
Advanced rotary slitting produces clean, burr-free edges, preventing material snagging during tube mill welding.
Custom Protective Finishes
Available with laser-peelable PVC or PE film to shield polished BA, 8K mirror, and satin finishes during roll-forming and transport.
High Elasticity & Spring Tempering
Specialty cold-worked tempers deliver reliable spring back for clips, spring washers, and automotive flex gaskets.
Quality Verification & Testing Standards
Every Stainless Steel Coil order processed by Trident Metal & Alloys undergoes strict testing protocols prior to packing and dispatch:
Mill Test Certification
Full EN 10204 3.1 test documentation validating ladle chemistry, yield stress, tensile strength, elongation percentage, and coil weight.
Thickness & Width Micrometer Scanning
Continuous laser-gauge monitoring ensuring cross-sectional thickness profile tolerances within ±0.01 mm on precision strip stock.
Surface Defect Inspection
Optical inspection ensuring zero pinholes, scratches, scale inclusions, or roll-mark impressions across bright annealed and mirror coils.
Third-Party Inspection (TPI)
Optional inspection clearance by client-designated agencies including TUV, SGS, Bureau Veritas, DNV, and Lloyd's Register.
Regional Supply Network Across India
Western Region (Maharashtra & Gujarat)
Supplying 316L chemical strip, 409L exhaust coils, and 430 mirror finish stock to auto component makers, tube mills, and stamping units in Mumbai, Pune, Thane, Ahmedabad, Vadodara, Rajkot, Surat, and Sanand.
Northern & Central Region (NCR, Punjab, UP & MP)
Distributing 304 deep-drawing coils and 441 matt PVC coated coils for kitchenware, home appliances, and solar framing across Delhi NCR, Gurgaon, Faridabad, Ghaziabad, Ludhiana, Kanpur, Indore, and Bhopal.
Southern Region (Tamil Nadu, Karnataka, Telangana & AP)
Delivering precision 321H, 316Ti, and Aluminium Alloy 6063 Coils Strips to aerospace machine shops, transformer plants, electronic hardware units, and HVAC builders in Chennai, Coimbatore, Bengaluru, Hyderabad, Visakhapatnam, and Hosur.
Eastern Region (West Bengal, Odisha, Jharkhand & Chhattisgarh)
Bulk supply of heavy-gauge 304/304L hot-rolled slit coils and 410 hardenable strip for industrial hardware, conveyor belts, and steel mill utilities in Kolkata, Durgapur, Jamshedpur, Rourkela, Bhilai, and Cuttack.
Frequently Asked Questions
Q: What is the minimum slitting width available for stainless steel coil strips?
A: We supply narrow precision Stainless Steel Strip Coil stock starting from a minimum width of 5 mm with deburred or rounded edges.
Q: What is the benefit of a Bright Annealed (BA) finish on stainless coils?
A: A BA finish is annealed in a protective atmosphere furnace, producing a highly reflective, mirror-like surface that requires no additional polishing for decorative uses.
Q: What coil inner diameter (ID) sizes do you provide?
A: Standard coil IDs are 400 mm, 508 mm, and 610 mm, matching standard decoiler arbors used in stamping press lines and roll formers.
Q: How are stainless steel coils protected against moisture during transit?
A: Every coil is wrapped in waterproof VCI paper, encased in plastic wrap, secured with radial steel strapping, and placed on wooden skids with eye-to-sky or eye-to-side orientation.
Q: What is the difference between 409L and 430 stainless steel coils?
A: Grade 409L is a low-carbon, highly weldable grade designed for functional high-heat automotive exhausts, whereas 430 is a higher-chromium grade meant for visible architectural and appliance trim.
Q: Do you offer coil cut-to-length services into flat sheets?
A: Yes, we operate high-speed tension-leveling cut-to-length lines that flatten master coils into custom-length sheets without surface marking.
Request a Quote
Contact Trident Metal & Alloys for direct factory pricing, immediate stock availability, and technical material selection support for your stainless steel coil requirements.
- Email Inquiries: tridentmetal96@yahoo.com
- Direct Phone / WhatsApp: +91 9619282829 / +91 9619966304
