GR2 is a common titanium alloy material used in industry, which is usually formulated and produced according to ASTM (American Society for Testing and Materials) standards. Specifically, GR2 titanium welding wire refers to Grade 2 titanium alloys under the ASTM standard, and the following are some common standard specifications for GR2 titanium welding wire:
1. ASTM B265: This is the standard specification for GR2 titanium plate, sheet, strip, thin strip, and thin ring, which includes the chemical composition, mechanical properties, and processing requirements of GR2 titanium welding wire.
2. ASTM B348: This is the standard specification for GR2 titanium and titanium alloy bars, rods, and other products, which is used to standardize the chemical composition, mechanical properties, and processing requirements of GR2 titanium welding wire.
3. ASTM B861: This is the standard specification for GR2 titanium and titanium alloy seamless tubes and pipes, which specifies the dimensions, chemical composition, mechanical properties, and other requirements for GR2 titanium alloy seamless tubes and pipes.
In addition to the ASTM standards mentioned above, international standards for GR2 titanium welding wire include standards such as ISO 5832-2, and there may be other industry standards and customized special requirements depending on the region and application.
GR2 titanium alloy is a common titanium alloy material for industrial use with good mechanical and physical properties. Below are the general mechanical and physical properties that characterize GR2 titanium welding wire:
Mechanical properties: - Tensile strength: approximately 330 MPa to 430 MPa. - Yield strength: approximately 240 MPa to 370 MPa. - Elongation: approximately 20% to 30%. - Modulus of elasticity: approx. 105 GPa.
Physical properties: - Density: approx. 4.5 g/cm³, with a low density, making it ideal for lightweight designs. - Melting point: about 1660°C, GR2 titanium welding wire has good high-temperature stability. - Thermal conductivity: about 21.9 W/(m-K), with good thermal conductivity properties. - Coefficient of expansion: about 8.6 × 10^-6/°C, with a low coefficient of linear expansion.
