Specialty Metallurgy Division
Super Duplex Stainless Steel (S32507) Torsion Springs
Engineered for high-stress mechanical applications, providing extreme cyclic fatigue life and sour gas corrosion immunity in refinery valves and offshore actuators.
Superior Elastic Limits in Hostile Environments
In high-pressure safety relief valves, check valve flappers, subsea actuators, and heavy industrial dampening mechanisms, spring failure results in catastrophic pressure loss or valve jamming. Standard spring steels and conventional 302/316 wires undergo rapid stress-corrosion cracking when exposed to sulfide stress cracking (SSC) in oilfield sour gas.
Absolute Webtech cold-coils and heat-treats custom Super Duplex UNS S32507 torsion springs engineered to deliver millions of deflection cycles without relaxation, permanent set, or micro-fissuring.
Every spring is manufactured to rigorous spring index tolerances, shot-peened to induce surface compressive stress, and certified to meet NACE MR0175 / ISO 15156 standards for sour service petroleum production environments.
Engineering Highlights
- Material: Super Duplex UNS S32507 (EN 1.4410)
- Tensile Strength: Up to 1,600 MPa (Cold Drawn)
- NACE MR0175 / ISO 15156 Sour Gas Compliant
- Wire Diameters: 0.5 mm to 16.0 mm
- High Torsional Modulus & Minimal Set
- Shot Peening & Passivation Treatments
- Full Torque-Deflection Calibration Curves
Key Performance Factors
Exceptional High-Cycle Fatigue Life
Controlled stress relief and automated CNC coiling prevent surface micro-notches, extending mechanical cycle endurance past 1,000,000 full-rated deflections.
Zero Hydrogen Embrittlement
Unlike high-carbon spring steels, S32507 is intrinsically resistant to hydrogen-induced stress cracking in sour gas processing facilities.
Tailored Leg Configurations
Custom radial, axial, or looped legs designed to match your valve shafts, spring brackets, and actuator return mechanisms with micron precision.
Order Custom S32507 Torsion Springs
Provide your wire diameter, outside diameter, active coils, leg lengths, and required torque for an immediate engineering review.
Request a Spring Quote