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Durable 201/316L Stainless Steel Coil | Hairline Surface Mastery
Durable 201/316L Stainless Steel Coil | Hairline Surface Mastery
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Durable 201/316L Stainless Steel Coil | Hairline Surface Mastery
Product Overview
Our durable 201/316L Stainless Steel Coil combines cost-efficiency and premium corrosion resistance, engineered for architectural, automotive, and industrial applications. Featuring a sophisticated hairline surface finish, this product excels in both aesthetic appeal and functional durability. Ideal for stainless steel coil pipe systems, stainless steel coil stock storage, and precision components requiring 304 stainless steel coil alternatives, it delivers unmatched versatility across industries.
Technical Specifications
| Property | 201 Stainless Steel Coil | 316L Stainless Steel Coil |
|---|---|---|
| Thickness | 0.25–3.0mm (Cold Rolled) | 0.25–3.0mm (Cold Rolled) |
| Width | 1000–1500mm (Customizable) | 1219–2000mm (Customizable) |
| Surface Finish | Hairline (HL), 2B, No.4, Mirror | Hairline (HL), 2B, BA, 8K Mirror |
| Hardness (Rockwell B) | ≤88 HRB | ≤95 HRB |
| Tensile Strength | ≥520 MPa | ≥485 MPa |
| Yield Strength | ≥275 MPa | ≥170 MPa |
| Elongation (δ5) | ≥40% | ≥40% |
| Density | 7.8 g/cm³ | 7.98 g/cm³ |
| Certifications | ASTM A240, JIS G4304, EN 10088-2 | ASTM A240, ASME SA240, ISO 9444 |
Key Performance Attributes
Tensile & Bending Strength
The 201 stainless steel coil achieves a tensile strength of ≥520 MPa, making it suitable for structural applications like stainless steel coil stock racks and automotive trim. Its high manganese content enhances work hardening, improving resistance to deformation under load.
For 316L stainless steel coil, the tensile strength of ≥485 MPa is complemented by superior ductility (≥40% elongation), allowing complex forming for stainless steel coil pipe systems in marine environments. The addition of 2-3% molybdenum enhances pitting resistance, critical for chemical processing equipment.
Weight Calculation Formula
To estimate coil weight:
Weight (kg) = Thickness (mm) × Width (m) × Length (m) × Density (g/cm³)
Example for 316L coil (1.5mm × 1219mm × 50m):
1.5 × 1.219 × 50 × 7.98 = 731.2 kg
Why Stainless Steel Rusts?
While stainless steel resists corrosion, specific conditions trigger oxidation:
- Chloride Exposure: Coastal or de-icing environments degrade the chromium oxide layer, especially in 304 stainless steel coil variants.
- Carbon Contamination: Improper welding or grinding introduces carbon, causing intergranular corrosion in 201-grade coils.
- Mechanical Damage: Scratches from stainless steel coil stock handling expose raw metal to oxygen and moisture.
- Acidic Pollutants: Industrial emissions react with humidity, accelerating pitting in hairline-finished surfaces.
Identification & Traceability
All coils are laser-marked with:
- Grade Code: 201/316L
- Batch Number: Linked to MTC (Mill Test Certificate) for full traceability
- Surface Finish Symbol: e.g., HL (Hairline), 2B (Cold Rolled Matte)
- Compliance Marks: ASTM/JIS/EN standards
Applications
- Architectural Cladding: Hairline finish for modern façades and stainless steel coil pipe decor.
- Food Processing: 316L's molybdenum resists acidic cleaners in conveyor systems.
- Automotive Exhausts: 201-grade balance of cost and heat resistance.
- Chemical Tanks: 316L's pitting resistance for chloride-rich environments.
Why Choose Our Stainless Steel Coils?
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Material Excellence:
- 201 Coils: Low-nickel, high-manganese formula reduces costs by 30% vs. 304-grade.
- 316L Coils: Medical-grade molybdenum (2.1–2.5%) for ISO 13485-compliant applications.
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Hairline Finish Precision:
- 120–180-grit polishing creates uniform linear texture, reducing glare by 60% vs. mirror finishes.
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Customization Flexibility:
- Slit-to-width services for stainless steel coil stock (±0.1mm tolerance).
- Optional PVC film coating to prevent scratches during transit.
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Global Compliance:
- Dual-certified (ASTM + JIS) for transcontinental projects.
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Sustainability:
- 100% recyclable material with SGS-certified low carbon footprint.
