WT18 (ШТ18)
WT18 Titanium Sheets & Billets for Aerospace and Industrial Use
WT18 Titanium is a heat-resistant wrought titanium alloy used for components that must perform under sustained high temperatures and mechanical stress. It is valued for its excellent strength-to-weight ratio, corrosion resistance, and stability in demanding operating environments. Russian Metals supplies WT18 in sheet, billet, and other semi-finished forms with documentation support and customization options for industrial projects in India.
Overview of WT18 Titanium Alloy
WT18 is selected for high-performance applications because it offers a strong balance of heat resistance, mechanical strength, and corrosion protection. It is commonly considered for parts exposed to elevated temperature ranges and long operating cycles where conventional alloys may lose strength.
High strength-to-weight ratio: Helps reduce structural weight without compromising load-bearing capability.
Corrosion resistance: Performs well in harsh environments, including moisture, marine exposure, and process industry conditions.
Thermal stability: Maintains reliable performance in heat-affected zones and elevated-temperature service.
Characteristics of the Material WT18
| Grade : | WT18 |
| Classification : | Titanium wrought alloy |
| Application: | for the production of rods, forgings, stampings; heat-resistant alloy, recommended for parts operating for a long time (up to 500 hours) at 550 - 600 °C and for a short time (single-use parts) - up to 800 °C. |
| Foreign analogues: | No data |
Chemical Composition in % of the Material WT18
GOST 1-90013 - 81
| Fe | C | Si | Mo | N | Nb | You | Al | Zr | O | H | Impurities |
|---|---|---|---|---|---|---|---|---|---|---|---|
| up to 0.15 | up to 0.1 | 0.05-0.18 | 0.2-1 | up to - 0.05 | 0.5-1.5 | 76.82 - 82.05 | 7.2 - 8.2 | 10 - 12 | up to 0.14 | up to 0.015 | other 0.3 |
Key Mechanical Properties of WT18 Titanium Alloy
Mechanical performance data can vary by heat treatment, section size, and processing route. Below is a reference-style summary for context:
| Condition / Property | Typical Value / Observation | Source |
|---|---|---|
| Yield Strength (quasi-static, room temperature) | ≈ 1,180 MPa | MDPI |
| Ultimate Tensile Strength (flow stress under compression) | ≈ 1,500 MPa | MDPI |
| Dynamic / High-Strain-Rate Flow Stress (SHPB test, room temperature) | ~1,300 MPa at 1,033 s⁻¹ → ~1,680 MPa at 5,015 s⁻¹ | MDPI |
| Temperature Sensitivity | Flow stress decreases with rising temperature (25 °C → 600 °C), indicating thermal softening | MDPI |
| Ductility (aged condition example) | Tensile strength ~1,295 MPa, elongation ~8.2% | MDPI |
WT18 is used where a combination of high strength, thermal stability, and corrosion resistance is required for long-duration service. Final properties depend on the supplied condition and project specifications.
Mechanical Properties
σin - Tensile strength [MPa]
σT - Yield stress [MPa]
δ5 - Specific elongation at fracture [%]
ψ - Reduction of area [%]
KCU - Impact strength [kJ/m²]
HB - Brinell hardness [MPa]
Physical Properties
T - Test temperature [Grade]
E - Young modulus [MPa]
α - Coefficient of linear expansion (20° - T) [1/Grade]
λ - Thermal (heat) condition coefficient [Watt/(m·Grade)]
ρ - Density [kg/m³]
C - Specific heat (range 20° - T) [J/(kg·Grade)]
R - Electrical resistance [Ohm·m]
Applications of WT18 Titanium
WT18 is used in high-temperature and high-load environments, especially where weight reduction and corrosion resistance are also important. Typical use cases include:
Aircraft components: Structural and heat-affected assemblies where long service life is required.
Space and high-temperature hardware: Components exposed to extreme temperature variation and demanding operating cycles.
Fasteners and connectors: High-strength parts used in machinery and engineered assemblies.
WT18 Titanium for Space and Aviation
WT18 is chosen for aerospace programs where parts may face elevated temperatures, vibration, and long operating hours. Its combination of strength, corrosion resistance, and low density supports efficient designs without compromising structural integrity.
Russian Metals supports aerospace and industrial buyers with WT18 supply options, documentation support, and processing assistance based on project needs.
Why Choose Russian Metals for WT18 Titanium?
Russian Metals supplies WT18 titanium products with a focus on consistency, documentation, and practical support for engineering teams and procurement.
Certified quality: Supply with relevant documentation and quality checks as per availability and project requirements.
Custom cutting & sizing: Sheets, billets, and semi-finished forms can be prepared to match your requested dimensions.
Technical support: Assistance with selection based on application, operating temperature range, and required form factor.
WT18 - Titanium Deformable Alloy
WT18 - chemical composition, mechanical, physical and technological properties, density, hardness, application