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AISI 347 Stainless Steel Disk
Available Configurations
Properties common to all products in this list
Key Features
AISI 347 Stainless Steel Disk (UNS S34700) offers excellent high-temperature corrosion resistance, good mechanical strength, and reliable stability against intergranular carbide precipitation:
Reliable Stability Against Intergranular Carbide Precipitation
AISI 347 Disk delivers reliable stability against intergranular carbide precipitation through niobium stabilization, preventing the chromium depletion that compromises corrosion resistance in standard austenitic grades.
Enhanced Creep Resistance Under Cyclic Thermal Loading
Niobium stabilization enhances creep resistance and performance under cyclic thermal loading, making this disk suitable for aerospace turbine components and nuclear plant equipment requiring sustained high-temperature service.
Excellent High-Temperature Corrosion Resistance
Excellent high-temperature corrosion resistance combined with good mechanical strength suits AISI 347 Disk to high-temperature flange seals and structural interfaces in corrosive high-heat environments.
Suited to Applications Requiring Sustained High-Temperature Service & Weld Integrity
AISI 347 Disk is suitable for aerospace turbine components, chemical processing systems, and nuclear plant equipment where sustained high-temperature service and weld integrity are both required.
Rotating Machinery Component Suitability
Rotating machinery components benefit from the combination of mechanical strength and high-temperature corrosion resistance characteristic of AISI 347 Disk.
Industrial Applications
AISI 347 Stainless Steel Disk is used across aerospace, chemical processing, and nuclear power sectors where sustained high-temperature service and weld integrity are both required:
- ✦ High-Temperature Flange Seals
- Used as high-temperature flange seals, where excellent high-temperature corrosion resistance and reliable stability against intergranular carbide precipitation ensure long-term sealing performance.
- ✦ Rotating Machinery Components
- Applied in rotating machinery components, where enhanced creep resistance under cyclic thermal loading supports reliable performance under combined mechanical and thermal stresses.
- ✦ Structural Interfaces in Corrosive High-Heat Environments
- Used as structural interfaces in corrosive high-heat environments, where good mechanical strength combined with excellent high-temperature corrosion resistance ensures durable structural performance.
- ✦ Aerospace Turbine Components & Nuclear Plant Equipment
- Applied in aerospace turbine components, chemical processing systems, and nuclear plant equipment where sustained high-temperature service and weld integrity are both required.
- ✦ Wear Resistance & Hot Corrosion Research
- Investigated for wear resistance improvements through surface hardening treatments and for oxidation and hot corrosion performance under severe service conditions.
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% |
| Diameter | ±0.5mm |