Product Overview
SS430-Foil-0.1x500mm is a high-precision, bright annealed stainless steel foil engineered for demanding industrial applications requiring magnetic response, corrosion resistance, and dimensional stability. As a premium-grade stainless steel foil, it conforms to ASTM A176 standards and is fully RoHS compliant—ensuring environmental safety and global regulatory acceptance. This SS430 foil belongs to the ferritic family and is uniquely valued among stainless alloys for its inherent magnetic stainless steel properties—unlike austenitic grades (e.g., 304 or 316), SS430 retains strong ferromagnetism, making it ideal for sensors, shielding, and electromagnetic components. With an exact thickness of 0.1mm stainless, tight width tolerance (±0.2 mm), and a mirror-bright surface finish achieved through controlled hydrogen atmosphere annealing, this foil delivers exceptional flatness, uniform elongation, and consistent magnetic permeability.
Manufactured via precision cold rolling and proprietary heat treatment, each coil undergoes 100% eddy current testing and surface inspection to guarantee zero pinholes, scratches, or edge defects. Its balanced composition (16–18% Cr, low C/N) ensures optimal oxidation resistance up to 800°C while maintaining excellent formability in stamping, bending, and laminating processes.
Key Features
- Bright annealed surface with Ra ≤ 0.05 µm for optical reflectivity and solderability
- Fully magnetic—ideal for EMI/RFI shielding, reed switches, and magnetic encoders
- RoHS compliant & REACH certified; no heavy metals or halogenated substances
- High dimensional stability: thickness tolerance ±0.005 mm, width tolerance ±0.2 mm
- Excellent deep-drawing and fine-blanking performance
- Available in standard coils (max. 500 mm width × 500 m length) with custom slit widths
Technical Specifications
| Parameter |
Value |
| Grade |
SS430 (AISI 430) |
| Thickness |
0.100 ± 0.005 mm |
| Width |
500 ± 0.2 mm |
| Surface Finish |
Bright Annealed (BA), mirror-like |
| Tensile Strength |
450–600 MPa |
| Yield Strength (0.2% offset) |
205–310 MPa |
| Elongation |
≥20% (50 mm gauge) |
| Hardness |
180–220 HV |
| Magnetic Permeability (µᵣ) |
800–1200 (typical at 0.002 T) |
| Coil ID / OD |
150 mm / 600 mm (standard) |
| Edge Condition |
Slit-edge, burr-free, laser-trimmed option available |
| Standards Compliance |
ASTM A176, ASTM A480, RoHS 2015/863/EU |
Applications
This magnetic stainless steel foil is widely deployed across electronics, automotive, medical, and energy sectors. Key uses include EMI shielding gaskets in 5G base stations and IoT modules; flexible heating elements in smart appliances; diaphragms and shims in fuel injectors and solenoid valves; core laminations for miniature transformers; and biocompatible electrode substrates in wearable diagnostics. Because is stainless steel magnetic behavior is critical for functional reliability—and SS430 uniquely delivers it without compromising corrosion resistance—this foil serves as a strategic material choice where performance, compliance, and repeatability are non-negotiable.
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