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Common Materials for Spring-Energized Seals

Handa Spring manufactures custom springs in a variety of materials, including high-temperature and exotic alloy springs. Spring materials we’re experienced with include Inconel X750, MP35N, Elgiloy, Stainless Steel, Alloy Carbon steels, and many other exotic spring and non-exotic spring-type materials.

Each material has a different chemical composition and varied properties. We assist you in choosing the right material that well suits the environment in which your spring operates. From custom exotic alloy springs to standard metal springs, Handa can manufacture the perfect spring for your project. Contact us today!

Cobalt Nickel Alloys

MP35N
MP35N Canted Coil Springs, engineered for exceptional strength and corrosion resistance, ideal for the most demanding applications in various industries. Contact us!
Elgiloy
Handa Spring manufactures Elgiloy Springs Energized Seals that have a high fatigue strength, which is for demanding sour environments. ISO 9001 Certified. Call us today!

Inconel Nickel Alloys

Inconel 625
Inconel 625 (UNS N06625) technical guide for spring-energized seals: verified composition, key physical data, reliable service temperature guidance, corrosion behaviour, forming into springs, alternatives comparison (with temperature guidance), selection guidance, FAQ and authoritative references.
Inconel X-750
Inconel X-750 (UNS N07750) — technical guide for springs & sealing energizers: composition, aging, mechanical & corrosion properties, stress-relaxation, fatigue, forming guidance and selection notes.
Inconel 718
Spring Energized for Inconel 718 with corrosion-resistance and has high tensile, yield, and creep-rupture properties at high temperatures up to 1200°F (650°C).

Nickel Alloy

Hastelloy C-276
Hastelloy C-276 technical guide for sealing energizers: forming for canted coil/helical/garter/cantilever springs, corrosion resistance, composition, properties, applications, fabrication, alternatives and selection advice.

Stainless Steel

304
Stainless Steel 304 with spring-energized seals include canted coil, helical, cantilever (V/U) and full-contact springs. Technical guide: composition, key physical data, service temperature guidance, forming into springs, alternatives & selection tips, FAQ and authoritative references.
301
Stainless Steel 301 (UNS S30100) technical guide for canted coil springs and spring-energized seals: composition, tempers, mechanical & corrosion properties, elastomer compatibility, testing, failure modes, alternatives and QA.
316L
Handa Spring manufactures 316L Stainless Steel Springs Energized Seals that are suitable for sub-zero temperatures & architectural settings. Call us today for a quote!
17-7 PH
Learn about our 17-7 PH Springs Energized Seals, engineered for superior strength & corrosion resistance, perfect for demanding applications across various industries. Contact us today!

Need Alloy Springs for Your Application?

Our engineering team can help you select the right spring design and material for your specific requirements.

Get a Quote for Alloy Springs

Advanced Materials for Demanding Environments

Handa stocks standard and specialty materials of all types. Below are some commonly requested materials used to manufacture spring energizer products. If your application requires alternate materials, contact us for custom quote information.

Material Description Key Strengths Typical Applications
Elgiloy®  High-strength, corrosion-resistant cobalt-based alloy; strain-hardened ✅ Excellent resistance to chloride, seawater, and sour gas (H₂S)
✅ Outstanding fatigue life
✅ Non-magnetic
✅ Exceptional elastic recovery
Medical devices, aerospace seals, energy, subsea and harsh chemical environments
Inconel® 718 Precipitation-hardened nickel alloy with superior strength and thermal stability ✅ High mechanical strength up to ~700 °C
✅ Excellent cryogenic ductility down to −253 °C
✅ Creep and relaxation resistance under stress
Turbomachinery, aerospace seals, cryogenic and high-load sealing applications
Inconel® 625 Solid-solution strengthened alloy with excellent corrosion resistance ✅ Exceptional resistance to acids, seawater, and chloride pitting
✅ Oxidation and creep resistance up to ~980 °C
✅ Non-magnetic, weldable
Chemical process equipment, offshore oil & gas, heat exchangers, dynamic seals
Hastelloy® C-276 Highly corrosion-resistant alloy, ideal for aggressive chemical environments ✅ Excellent resistance to oxidizing and reducing acids
✅ Handles Cl₂, HCl, H₂SO₄, and wet chlorine
✅ Non-magnetic
Acid processing, chemical reactors, flue gas scrubbers, high-acid sealing systems
MP35N® Ultra-high strength alloy; combines strain hardening and aging ✅ Tensile strength >2000 MPa
✅ Outstanding fatigue and corrosion resistance
✅ Biocompatible & non-magnetic
Aerospace, deep-sea, high-pressure seals, medical implants
316L Stainless Steel Austenitic stainless steel with excellent general corrosion resistance ✅ Good resistance to chlorides and oxidation
✅ Weldable, low cost, food/medical grade
✅ Non-magnetic in annealed state
Food-grade seals, water treatment, general-purpose spring applications
17-7PH Stainless Steel Precipitation-hardened stainless steel with moderate corrosion resistance ✅ Reasonable strength after aging treatment
✅ Cost-effective
✅ Limited fatigue resistance
Pumps, industrial valves, standard dynamic seal springs

Each material is selected based on your application’s pressure, media, temperature, and compliance requirements.