Ultra-Smooth 430 Stainless Steel Coil | Mirror Finish Durability

Product Overview

Key Technical Specifications

Tensile & Bend Strength

The 430 stainless steel coil delivers a tensile strength of ≥450 MPa and yield strength of ≥205 MPa, making it ideal for applications requiring moderate mechanical stress resistance, such as automotive trim, kitchen appliances, and architectural cladding. Its ferritic structure ensures magnetic properties, which is advantageous for components requiring magnetism, such as coiling stainless steel tubing in industrial pipelines. Bend strength is enhanced by its ductility (≥22% elongation), allowing seamless forming into complex shapes without cracking.

Weight Calculation

Calculate coil weight using:

$$\text{Weight (kg)}=\text{Thickness (mm)}\times \text{Width (m)}\times \text{Length (m)}\times 7.75\times 0.001$$

Example: A mirror-finished coil (0.5mm thick, 1.2m wide, 50m long) weighs:

$$0.5\times 1.2\times 50\times 7.75\times 0.001=2.33\text{kg}$$

This formula is critical for logistics planning and cost estimation, especially for custom stainless steel coil orders.

Identification Methods

• Chemical Analysis: Confirm Cr (16–18%), Mn (≤1.0%), and Ni (≤0.6%) via XRF testing.
• Spark Testing: Produces short, bright sparks with minimal branching due to low nickel content.
• Magnetic Testing: Fully magnetic, distinguishing it from austenitic grades like 304/316.

Causes of Stainless Steel Corrosion

1. Chloride Exposure: Coastal environments or de-icing salts accelerate pitting in 430 steel due to limited molybdenum content.
2. Galvanic Corrosion: Contact with carbon steel or copper in humid conditions triggers electrochemical degradation.
3. Organic Acid Accumulation: Food residues or industrial chemicals form corrosive films, particularly in unpolished surfaces.
4. Mechanical Abrasion: Scratches from tools or cold rolled stainless steel coil handling expose raw metal to oxidation.
5. High-Temperature Oxidation: Prolonged exposure above 843°C degrades chromium’s protective oxide layer.

Applications & Advantages

Versatile Industrial Use

• Automotive: Exhaust systems, trim, and grilles leverage its heat resistance (up to 815°C) and formability.
• Kitchenware: Sinks, cookware, and coiling stainless steel tubing components benefit from hygienic surfaces (Ra ≤0.5μm).
• Architecture: Mirror and hairline finishes enhance façades while resisting urban pollution.

Functional Benefits

1. Cost-Effectiveness: Absence of nickel reduces costs by 30–40% compared to 304/316 grades.
2. Thermal Conductivity: 25 W/m·K ensures efficient heat distribution for appliances.
3. Recyclability: 100% recyclable with minimal quality loss, supporting circular manufacturing.

Why Choose Our 430 Stainless Steel Coils?

1. Certified Quality: Sourced from TISCO/BAOSTEEL mills with ISO 9001 and SGS compliance.
2. Custom Fabrication: Tailored slitting (3–2000mm), embossing, and mirror polishing for custom stainless steel coil projects.
3. Global Logistics: 7–15-day delivery via FOB/CIF with VCI anti-rust packaging.
4. Cost Efficiency: Direct partnerships cut prices by 15–20% vs. competitors.
5. Technical Expertise: 20+ years of experience in alloy selection, welding, and corrosion prevention.