Friction Stir Welding and DuraStir Tools
Solid-state joining for superior quality, high-strength joints, and very low distortion
The DuraStir line of Friction Stir Welding Tools for solid-state joining
Rhenium Alloys, a world leader in manufacturing of refractory metals, proudly offers its DuraStir Line of Friction Stir Welding Tools. Since 1966, Rhenium Alloys has been synonymous with high temperature refractory metals innovation.
Friction Stir Welding (FSW), an innovative welding process where the metal is not melted, joins two surfaces using mechanical pressure applied by a third body tool. A solid-state joining process, Friction Stir Welding creates superior quality, high-strength joints with very low distortion. Its excellent mechanical properties allow the joining of dissimilar alloys, very large panel lengths and widths, and practically defect-free bonding. Beyond that, it is environmentally friendly. Friction Stir Welding avoids common metal cooling problems like porosity, solute redistribution, solidification cracking, and liquation cracking, often associated with traditional fusion welding methods.

Proprietary Friction Stir Welding tools
Rhenium Alloys' proprietary Friction Stir Welding tools are used to Friction Stir Weld hard metals such as steel, titanium and nickel based alloys. Heavy manufacturers in the oil and gas, nuclear, and military equipment industries benefit from this excellent welding material and design innovation. DuraStir tools also have extensive applications in the aerospace and defense industries for the welding of Titanium.
Made in the USA
Our DuraStir Tools are proudly Made in the USA.
Features
- Patented Technology – Rhenium Alloys, along with our partner EWI, offer Friction Stir Welding tool designs that combine GE patented and licensed tool material.
- Production Ready – Rhenium Alloys DuraStir tools are designed for use in your existing Friction Stir Welding equipment under your operating license.
- Custom FSW Tools – Rhenium Alloys can design custom DuraStir tools to fit your specific technology challenges.
Benefits
- Greater Weld Penetration – The Rhenium Alloys DuraStir tools are capable of welding both thick and thin sections up to 1 inch in a single pass. This is greater than any other tool available on the market today.
- Durability – These refractory metal based tools are extremely durable and can make multiple passes without damage or excessive wear.
- Multiple Use – Rhenium Alloys' DuraStir tools can be re-dressed multiple times. This extends the life of a tool and ensures equitable return on investment.
Friction Stir Welding Steel Applications
W-25Re
Welding Steel Applications
- Structural and low alloy steels up to 1 in. thick
• A36, AISI 1020, AISI 4140
• High strength low alloy (HSLA) steels - A572, HSLA 80, DS980
• Thermo-mechanical control processed (TMCP) steels - X80, X70
- Stainless steels up to 0.5 in. thick
• Austenitic steinless steels
• Ferritic stainless steels - Heat resistant alloys up to 0.5 in. thick
• Inconel 600, Inconel 800
• Monel
• Hastelloy
W-25Re-4HfC
Welding Steel Applications
- All W-25-Re Welding Steel Applications as well as;
- Martensitic stainless steels
• 440 - Hot work tool steels
• H-13 - Higher strength heat resistant alloys
• Inconel 718
W-La
Welding Steel Applications
- All titanium alloys up to 1 in. thick