Stainless Steel 1.4952 / AISI 309Ti
General Technical Characteristics
Stainless steel 1.4952 / AISI 309Ti is a heat-resistant austenitic corrosion-resistant steel with high chromium and nickel content, stabilized with titanium. This grade is designed for operation at elevated temperatures and in aggressive environments where high resistance to oxidation and thermal loads is required.
Due to the addition of titanium, AISI 309Ti exhibits increased resistance to intergranular corrosion, especially after welding and during prolonged exposure to high temperatures. The steel maintains its strength and structural stability at temperatures up to 900–1000°C.
Stainless steel 1.4952 is widely used in power engineering, metallurgy, and the chemical industry for manufacturing components operating under high-temperature conditions.
Applications
Stainless steel 1.4952 / AISI 309Ti is used in various industries:
- power engineering and boiler equipment
- furnaces and heat treatment installations
- gas turbine components
- heat exchangers
- chemical industry
- exhaust systems and heat-resistant structures
- components operating at high temperatures
Due to its heat resistance, AISI 309Ti is suitable for long-term thermal exposure.
Features and Advantages
Key advantages of stainless steel 1.4952:
- high heat resistance and oxidation resistance
- structural stability at high temperatures
- resistance to intergranular corrosion
- high strength at elevated temperatures
- good weldability
- durability under thermal loads
These properties make AISI 309Ti an optimal material for high-temperature applications.
Chemical Composition
| Element | Content % |
|---|---|
| Chromium (Cr) | 22–24 |
| Nickel (Ni) | 12–15 |
| Titanium (Ti) | 0.3–0.7 |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2 |
| Silicon (Si) | ≤ 1 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | balance |
Mechanical Properties
Main mechanical properties of AISI 309Ti steel:
- Tensile Strength (Rm): 500–750 MPa
- Yield Strength (Rp0.2): ≥ 210 MPa
- Elongation: ≥ 35 %
- Hardness: up to 200 HB
At elevated temperatures, stainless steel 1.4952 / AISI 309Ti retains strength and resistance to deformation, making it a reliable material for operation under thermal and mechanical loads.
