Robust 430 Stainless Steel Coil | Hairline & Cold Rolled Design

Product Overview

Our robust 430 Stainless Steel Coil is engineered for durability and precision, offering exceptional corrosion resistance and mechanical strength for industrial, automotive, and architectural applications. Featuring hairline finish and cold-rolled toughness, this product is ideal for stainless steel coil for hot tub systems, automotive trims, and structural components requiring cost-effective yet reliable performance. Trusted by global coil stainless steel suppliers, our coils deliver unmatched versatility in demanding environments.

Technical Specifications

Key Performance Attributes

Tensile & Bending Strength

The 430 stainless steel coil achieves a tensile strength of ≥450 MPa and yield strength of ≥205 MPa, making it suitable for structural components like coiled stainless steel tubing and automotive exhaust systems. Its ferritic structure balances rigidity with moderate ductility (≥22% elongation), allowing for cost-effective forming in applications where high chromium content (16–18%) ensures resistance to oxidation and mild corrosive environments.

Weight Calculation

Calculate coil weight using:
Weight (kg) = Thickness (mm) × Width (m) × Length (m) × Density (7.7 g/cm³)
Example: A 1.5mm × 1219mm × 50m coil weighs:
1.5 × 1.219 × 50 × 7.7 ≈ 703.3 kg

Why Does Stainless Steel Rust?

While 430 stainless steel resists corrosion better than carbon steel, rust can occur under specific conditions:

1. Chloride Exposure: Coastal environments or de-icing salts degrade the passive chromium oxide layer, leading to pitting corrosion.
2. Mechanical Damage: Scratches during fabrication or handling by coil stainless steel suppliers expose raw metal to oxygen and moisture.
3. Galvanic Corrosion: Contact with dissimilar metals (e.g., carbon steel) in electrolyte-rich environments accelerates oxidation.
4. High-Temperature Oxidation: Prolonged exposure above 870°C weakens the protective oxide layer.

Regular maintenance and proper material selection (e.g., avoiding chloride-rich environments) mitigate these risks.

Identification & Traceability

All coils are laser-marked with:

• Grade: 430/1.4016
• Batch Code: Linked to MTC (Mill Test Certificate) for full traceability.
• Surface Finish Symbol: e.g., HL (Hairline), 2B (Cold Rolled Matte).

Applications

• Automotive Systems: Exhaust components, trims, and coiled stainless steel tubing for fuel lines.
• Hot Tub Manufacturing: Stainless steel coil for hot tub heat exchangers due to moderate chloride resistance.
• Architectural Cladding: Hairline-finished panels for façades and interior design.
• Kitchen Equipment: Sinks, cookware, and appliances benefiting from hygienic surfaces.

Manufacturing Excellence

Cold Rolling & Surface Finishing

Our hairline finish is achieved through:

1. Cold Rolling: Precision reduction to ±0.01mm thickness tolerance.
2. Bright Annealing (BA): Hydrogen-nitrogen atmosphere treatment to eliminate oxidation and enhance luster.
3. Hairline Polishing: 120–180-grit abrasives create uniform linear texture, reducing glare by 60% compared to mirror finishes.

Quality Assurance

• Material Sourcing: Direct procurement from TISCO/BAOSTEEL with ISO 9001 certification.
• Testing: Salt spray tests (1,000+ hours) and spectrometer analysis for alloy integrity.

Why Choose Our Stainless Steel Coils?

1. Material Superiority:
   • 16–18% chromium content ensures balanced corrosion resistance and cost efficiency.
   • Cold-rolled precision (±0.1mm tolerance) for coiled stainless steel tubing and complex geometries.
2. Customization: Slit-to-width services and PVC-coated packaging to prevent transit damage.
3. Global Compliance: Dual ASTM/EN certifications for cross-border projects.
4. Sustainability: 100% recyclable material with SGS-certified eco-friendly processes.
5. Technical Support: 24/7 engineering guidance on fabrication and corrosion prevention.