Lead Paragraph

As a leading manufacturer and supplier, we offer a full range of cold rolled stainless steel coils in Grade 201, 304, and 316L. Engineered for precision fabrication, our coils feature tight thickness tolerances (0.3mm – 3.0mm), superior surface finishes (2B, BA, No.4), and verified corrosion resistance. Compliant with ASTM A240, JIS G4305, and EN 10088-2 standards. Available in slit widths or master coils for global B2B procurement.

Quick Grade Selection Guide

Choose the optimal alloy for your application and budget:

Product Specifications

Parameter              Specification Details

Available Grades          201 (1Cr17Mn6Ni5N), 304 (06Cr19Ni10), 304L, 316L (022Cr17Ni12Mo2), 316, 430

Thickness Range          0.30mm – 3.0mm (Precision Cold Rolled)

Width Range                  12mm – 1500mm (Slitted) / 1000mm, 1219mm, 1500mm (Master Coil)

Surface Finish                  2B (Matte), BA (Bright Annealed), No.4 (Hairline), No.8 (Mirror), PVC Coated

Edge Condition          Slit Edge (Round), Mill Edge

Standards                  ASTM A240 / A666, JIS G4305, EN 10088-2, GB/T 3280

Coil ID                          508mm / 610mm

Coil Weight                  3-8 tons (Customizable)

Grade-Specific Performance & Chemical Composition

1. Grade 201 Cold Rolled Coil (High Manganese, Cost-Effective)

• Chemistry: Cr 16-18%, Mn 5.5-7.5%, Ni 3.5-5.5%, N ≤0.25%

• Performance: Higher yield strength than 304. Work hardens rapidly. Suitable for mild corrosive environments (indoor). Non-magnetic in annealed state, magnetic after cold rolling.

• Best For: Dry indoor architectural panels, luggage hardware, kitchen utensils.

2. Grade 304/304L Cold Rolled Coil (Versatile Industry Standard)

• Chemistry: Cr 18-20%, Ni 8-10.5% (304L: C ≤0.03%)

• Performance: Excellent oxidation resistance up to 870°C. Superior deep drawing characteristics. 304L prevents carbide precipitation during welding.

• Best For: Food grade tanks, sinks, heat exchangers, pharmaceutical piping.

3. Grade 316L Cold Rolled Coil (Molybdenum-Enhanced, Maximum Corrosion Resistance)

• Chemistry: Cr 16-18%, Ni 10-14%, Mo 2-3% (C ≤0.03%)

• Performance: 2-3x pitting resistance of 304 in chloride environments. Resists sulfuric acid, phosphoric acid, and acetic acid. Non-magnetic.

• Best For: Marine hardware, coastal building facades, chemical valve bodies, surgical instruments.

Precision Processing Capabilities

We provide value-added services to reduce your fabrication costs:

• Precision Slitting: Tolerance ±0.1mm, burr height ≤0.03mm. Min slit width 10mm.

• Cut-to-Length (CTL): Sheets cut from coil, length tolerance ±0.5mm, diagonal tolerance ≤1mm.

• Surface Protection: Laser-grade PVC (50-100μm), PE film, or Paper interleaving for scratch-free deep drawing.

• Edge Conditioning: Deburring and rounding for safe handling and welding prep.

• Packaging: Export standard seaworthy wooden pallets, waterproof paper, steel straps, corner protection.

Quality Assurance & Certifications

• Mill Test Certificate (MTC): EN 10204 3.1 provided for every coil (Chemical & Mechanical properties).

• Third-Party Verification: SGS, BV, TUV, Intertek inspection supported.

• PMI Testing: 100% Positive Material Identification on raw material and finished coils.

• ISO Certified: ISO 9001:2015, ISO 14001, PED 2014/68/EU (for 304/316L pressure vessel grades).

Frequently Asked Questions

Q: What is the price difference between 201, 304, and 316L stainless steel coils?

A: Generally, 201 is 30-40% cheaper than 304. 316L is typically 40-50% higher than 304 due to Nickel and Molybdenum content. Prices fluctuate daily with LME nickel prices. Contact us for a real-time quote based on your thickness and width.

Q: Can you supply 0.5mm thickness 316L coil with BA finish for medical device stamping?

A: Yes. We stock 316L BA finish coils from 0.3mm to 1.5mm. The BA finish provides a smooth, reflective surface ideal for precision stamping and minimizes tool wear. We can provide surface roughness (Ra) reports.

Q: How do you guarantee the thickness tolerance of 0.3mm thin gauge coils?

A: We use 20-High Sendzimir Mills with automatic gauge control (AGC). For thickness <0.5mm, we guarantee tolerance within ±0.02mm. Each coil is scanned by laser thickness gauge before slitting.

Q: Do you offer LCL (Less than Container Load) shipping for trial orders?

A: Yes, we support LCL shipment from Shanghai/Ningbo port. Minimum order for trial is typically 1 ton per specification for standard grades (304/201). 316L may require 2 tons.