400 Series SS430 Stainless Steel Slit Coil Strip Cold Rolled Hot Rolled ODM

Product Overview

400 series stainless steel coils are versatile, corrosion-resistant materials available in both cold-rolled and hot-rolled variants. These coils are ideal for applications requiring durability, formability, and resistance to oxidation, making them a top choice across industries like automotive, construction, and appliances.

Key Features

• - Corrosion Resistance: Offers excellent resistance to oxidation and moderate corrosion, suitable for harsh environments.
• - Strength and Durability: High tensile strength and hardness ensure long-lasting performance.
• - Formability: Easily shaped and fabricated, with cold-rolled coils providing a smoother finish and tighter tolerances, while hot-rolled coils are cost-effective for larger projects.
• - Temperature Resistance: Maintains structural integrity under high temperatures, perfect for heat-exposed applications.
• - Surface Finish Options: Available in various finishes, including matte, bright, or customized surfaces to meet specific needs.

Applications

Widely used in automotive exhaust systems, kitchen appliances, industrial equipment, roofing, and architectural designs. Its adaptability and reliability make it a go-to material for manufacturers seeking efficiency and quality.

The production of colored stainless steel sheets via PVD (Physical Vapor Deposition) involves three core stages: pre-treatment, PVD coating deposition, and post-treatment, with strict parameter control throughout.

This stage ensures a clean, smooth surface for coating adhesion.

Cutting & Polishing: Cut stainless steel coils/plates to required dimensions via laser or shearing. Polish with abrasive belts/wheels to achieve finishes like mirror, brushed, or matte, and remove minor scratches.

Cleaning: First, degrease with alkaline/solvent solutions to eliminate oil and fingerprints. Then, pickle with nitric-hydrofluoric acid to remove oxide layers and polishing residues. Finally, rinse with deionized water and dry with hot air/infrared to avoid water spots.

Completed in a high-vacuum chamber to ensure coating quality.

Vacuum Setup: Load dried substrates into the chamber, then pump to 10⁻³–10⁻⁵ Pa (high vacuum). Heat substrates to 150–300°C and use argon ion bombardment for deep cleaning.

Target Sputtering & Reaction: Select targets based on color (e.g., titanium for gold, chromium for silver). Use magnetron sputtering (plasma bombards targets to release atoms) or arc ion plating (electric arc melts targets) to vaporize targets. Introduce reactive gases (nitrogen for nitrides, oxygen for oxides); target atoms react with gases to form colored compound films (e.g., TiN for rose gold) on substrates.

Thickness Control: Monitor via a quartz crystal sensor to keep coating thickness at 0.1–1 μm (too thin = poor fastness; too thick = brittleness).

This stage enhances performance and ensures compliance.

Cooling & Finishing: Cool the chamber to room temperature, release vacuum, and unload. Optionally, lightly polish coated surfaces for better gloss.

Quality Checks: Test coating hardness (≥2000 HV via Vickers tester) and adhesion (no peeling via cross-cut tester). Use a spectrophotometer to verify color consistency (ΔE ≤ 1 vs. standards).

Packaging: Wrap qualified sheets in anti-scratch film, then pack in cartons/wooden pallets for transport.

Engineered for durability and versatility, 400 series stainless steel coils — available in both cold-rolled and hot-rolled variants — deliver exceptional corrosion resistance and high strength across demanding environments. Cold-rolled coils offer superior surface finish and tighter dimensional tolerances, ideal for precision applications in automotive trim, appliance panels, and decorative hardware. Hot-rolled coils, with their enhanced formability and structural integrity, are perfectly suited for heavy-duty industrial components, exhaust systems, and machinery parts exposed to elevated temperatures or mechanical stress.

The 400 series stands out for its magnetic properties and martensitic or ferritic microstructure, providing a cost-effective alternative to austenitic grades without sacrificing performance. Whether you require hardness for cutlery and surgical tools (410, 420 grades) or oxidation resistance for furnace parts and turbine blades (430, 446 grades), this family of alloys offers tailored solutions. Its excellent machinability and weldability — especially after proper preheating and post-weld heat treatment — ensure seamless integration into existing manufacturing workflows, reducing downtime and tooling costs.

Backed by consistent global supply chains and customizable thicknesses, widths, and surface finishes, 400 series stainless steel coils empower manufacturers to meet exacting specifications while maintaining budget efficiency. From architectural accents to energy sector infrastructure, these coils combine rugged reliability with aesthetic flexibility. As industries continue to prioritize materials that balance performance, longevity, and value, the 400 series remains a strategic choice for engineers and fabricators worldwide — trusted today, engineered for tomorrow.