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AISI 347 Stainless Steel Foil/Sheet
Available Configurations
Properties common to all products in this list
Key Features
AISI 347 Stainless Steel Foil (UNS S34700) is a niobium-stabilized austenitic stainless steel foil developed for high resistance to sensitization, intergranular corrosion, oxidation, and creep at elevated temperatures:
High Resistance to Sensitization, Oxidation & Creep at Elevated Temperatures
AISI 347 Foil delivers high resistance to sensitization, intergranular corrosion, oxidation, and creep at elevated temperatures, making it well suited to precision-engineered thin-section applications in thermally demanding environments.
Better High-Temperature Carbide Stability Than Titanium-Stabilized Grades
Niobium stabilization provides better high-temperature carbide stability than titanium-stabilized grades in many service conditions, giving AISI 347 Foil a performance advantage in the most thermally demanding applications.
Uniform Thickness & Good Surface Quality
The foil's precision-rolled form delivers uniform thickness, good surface quality, and flexibility for integration into complex thermal management and chemical containment assemblies.
Suited to Aerospace Recuperators & Compact Heat Exchanger Plates
Aerospace recuperators and compact heat exchanger plates benefit from AISI 347 Foil's combination of high-temperature stability and precision thin-section dimensional control.
Flexibility for Complex Assembly Integration
Flexibility for integration into complex thermal management and chemical containment assemblies supports use of AISI 347 Foil in heat shields for high-performance engines.
Industrial Applications
AISI 347 Stainless Steel Foil is used across aerospace, chemical processing, and high-performance engine sectors where high-temperature carbide stability is required in thin section:
- ✦ Aerospace Recuperators
- Used in aerospace recuperators, where better high-temperature carbide stability than titanium-stabilized grades supports reliable heat recovery performance under demanding thermal conditions.
- ✦ Chemical Processing Liners
- Formed into chemical processing liners, where high resistance to sensitization, intergranular corrosion, oxidation, and creep ensures long-term durability in aggressive chemical environments.
- ✦ Compact Heat Exchanger Plates
- Used in compact heat exchanger plates, where uniform thickness and good surface quality from the precision-rolled form support efficient, reliable heat transfer.
- ✦ Heat Shields in High-Performance Engines
- Applied as heat shields in high-performance engines, where flexibility for integration into complex thermal management assemblies and superior high-temperature stability protect engine components from extreme heat.
- ✦ Creep Rupture & Oxidation Resistance Investigation
- Supports creep rupture behavior studies, oxidation resistance investigations, and surface engineering experiments aimed at extending service life in aggressive environments.
Material Properties
| Element | Value |
|---|---|
| Hardness - Brinell | 160-190 |
| Elongation at break( % ) | <60 |
| Modulus of elasticity( GPa ) | 190-210 |
| Izod impact strength( J m⁻¹ ) | 20-136 |
| Tensile strength( MPa ) | 520-1100 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 70-73 |
| Element | Value |
|---|---|
| Maximum use temperature in air( C ) | 800 |
| Melting point( C ) | 1400-1425 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 16.3@100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 16-18@20-100°C |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 7.93 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |