430fr Stainless Steel
430FR stainless steel is a ferritic stainless steel designed for moderate corrosion resistance, good formability, and fire/heat resistance. It is widely used in appliances, HVAC, automotive, and industrial applications, offering dimensional stability, thermal performance, and durability in fire-rated and heat-exposed environments.
- Description
430FR is a ferritic stainless steel designed with improved fire and heat resistance. It is commonly used in appliances, automotive, and industrial applications where moderate corrosion resistance, good formability, and high-temperature performance are required. It is a variant of 430 stainless steel optimized for fire-rated applications.
Chemical Composition
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 16–18 |
| Carbon (C) | ≤ 0.12 |
| Manganese (Mn) | ≤ 1 |
| Silicon (Si) | ≤ 1 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Key Features:
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Ferritic structure provides dimensional stability and toughness
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Chromium content ensures moderate corrosion resistance
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Low carbon content minimizes sensitization during welding
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Designed for fire resistance and thermal performance
Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 450–550 MPa |
| Yield Strength | 210–280 MPa |
| Elongation | 20–25% |
| Hardness | 120–160 HB |
| Temperature Range | -50°C to 600°C |
Highlights:
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Excellent formability and weldability
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Moderate corrosion resistance suitable for indoor and mildly corrosive environments
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High thermal stability makes it suitable for fire-rated and heat-resistant components
Corrosion Resistance
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Resistant to atmospheric corrosion and mild chemicals
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Performs well in appliances, HVAC systems, and indoor architectural components
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Not recommended for marine or high-chloride environments
Common Applications
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Home Appliances: Oven panels, dishwasher components, heating elements
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HVAC & Industrial Equipment: Fire-rated panels, ducts, and thermal components
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Automotive Components: Exhaust parts, heat shields, and decorative trims
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Architectural & Decorative: Panels, trims, and indoor structural elements
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Industrial Applications: Machinery parts where fire and heat resistance is required
