Bumax DX 129’s duplex microstructure blends the best of austenitic and ferritic steels, delivering:

• Better corrosion resistance than 316 stainless
• Higher strength than standard stainless grades
• Improved resistance to stress corrosion cracking

Why Bumax DX 129 is the Strongest:

• Tensile Strength: Minimum 1200 MPa
• Yield Strength: Minimum 1080 MPa
• Material: Duplex Stainless Steel (UNS S32205 / EN 1.4462)
• Corrosion Resistance: PREN > 34 (compared to 316L which has PREN ~25)
• Fatigue Resistance: Superior to both A4 stainless and 12.9 carbon steel
• Ductility: Comparable to A4-70, with better elongation than 12.9 carbon steel

Applications

• Robotics & Industrial Automation: Used by robotics suppliers and in ultrasonic welding applications due to extreme forces and high-frequency vibrations. 
• Space & Aerospace: Chosen for critical components in telescopes, satellite instruments, and other space-related projects where high strength and resistance to galling are essential. 
• Medical & Cleanroom Environments: The DX 129 EPK version is designed for clean environments with low particle emissions and suitability for medical and sensitive electronic equipment, per Bumax. 
• Defense & Subsea: Utilized in defense applications, including armored vehicles, submarines, and naval warships, for critical components needing superior strength and corrosion resistance. 
• Petrochemical & Power Industries: Used in demanding applications like heat exchangers in refineries and in offshore platforms where high mechanical properties are necessary. 

Corrosion Resistance - PREN Values

Stainless Steel Grades

Stainless Steel Material Comparable Grades