Which material provides the best spring force retention?

Elgiloy® and MP35N® offer the best resistance to stress relaxation, maintaining spring force over extended service life. Elgiloy® is particularly well-suited for dynamic sealing applications requiring long-term load retention.

Which material is recommended for H₂S / sour gas environments?

Elgiloy® and MP35N® are both recommended for H₂S environments, complying with NACE MR0175 requirements. These alloys offer excellent resistance to sulfide stress cracking (SSC) and corrosion.

What is the most corrosion-resistant material for spring energizers?

Hastelloy® C-276 offers outstanding resistance to oxidizing and reducing acids, wet chlorine, and aggressive chemical media. Elgiloy® and MP35N® also provide excellent corrosion resistance in seawater and sour gas environments.

Which material is best for cryogenic sealing applications?

Elgiloy® and Inconel® X-750 are the preferred materials for cryogenic sealing systems due to their excellent low-temperature elasticity and stability. 316L is a cost-effective alternative for less demanding cryogenic applications.

What is the difference between 302 and 304 stainless steel for springs?

302 stainless steel is the industry-standard spring wire material, offering excellent cold-working properties and consistent spring performance. 304 is more commonly used for structural and sheet applications. For spring energizers, 302 is the preferred stainless steel choice.

Which material offers the highest fatigue life?

Elgiloy® and MP35N® offer the highest fatigue life among spring materials, making them ideal for dynamic sealing applications with high cycle requirements.

Can I use standard stainless steel for high-temperature applications?

For high-temperature applications above 400°C, Inconel® alloys (X-750, 718, 625) are recommended. Standard stainless steels like 302, 316L, and 17-7PH are generally limited to moderate temperature ranges (up to 400°C).

What is the most cost-effective material for general-purpose spring energizers?

302 Stainless Steel offers the best balance of cost and performance for general-purpose spring energizer applications. 17-7PH provides higher strength at a moderate cost premium.

Do you provide material certifications for spring products?

Yes. We provide material certificates (3.1, 3.2) and compliance certifications (RoHS, REACH, NACE MR0175) upon request. Full material traceability is maintained for all spring products.

What is the difference between Inconel X-750 and Inconel 718?

X-750 offers superior creep-rupture strength above 600°C, making it ideal for sustained high-temperature applications. 718 provides excellent strength and ductility in the 400-600°C range with better cryogenic ductility. Choose X-750 for >600°C, 718 for 400-600°C or high-strength cryogenic applications.

Spring Energizer Materials | Selection Guide By Handa Spring

Spring Energizer Materials — Alloy Selection Hub

Spring material determines the sealing performance, corrosion resistance, fatigue life, and operating temperature of every spring energizer. Handa Spring manufactures custom spring energizers using stainless steels, nickel alloys, and cobalt-based alloys for applications ranging from cryogenic LNG to semiconductor and chemical processing.

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Materials

Application / Condition	Recommended Material Family	Key Advantage
Cryogenic / LNG (-196°C)	High Temperature· Cobalt-Nickel	Low-temperature elasticity
H₂S / Sour Gas	Cobalt-Nickel	SSC resistance, NACE MR0175
Seawater / Marine	Corrosion Resistant· Cobalt-Nickel	Chloride pitting resistance
High Temperature (>400°C)	High Temperature	Creep & oxidation resistance
Semiconductor / Medical	Cobalt-Nickel	Non-magnetic, low outgassing
General Industrial	Stainless Steel	Cost-effective, readily available

Application / Condition

Recommended Material Family

Key Advantage

Cryogenic / LNG (-196°C)

High Temperature·
Cobalt-Nickel

Low-temperature elasticity

H₂S / Sour Gas

Cobalt-Nickel

SSC resistance, NACE MR0175

Seawater / Marine

Corrosion Resistant·
Cobalt-Nickel

Chloride pitting resistance

High Temperature (>400°C)

High Temperature

Creep & oxidation resistance

Semiconductor / Medical

Cobalt-Nickel

Non-magnetic, low outgassing

General Industrial

Stainless Steel

Cost-effective, readily available

How do I choose the right spring material for my application?

Material selection depends on operating temperature, media compatibility, corrosion resistance, mechanical load, and service life requirements. Use our Quick Selection guide above to identify the recommended material family for your application, then explore the specific alloy on the corresponding family page. Our engineering team is also available to provide application-specific recommendations.
Can you manufacture custom spring energizers in materials not listed here?

Yes. While we specialize in the materials shown above, we can manufacture spring energizers in a wide range of additional alloys based on customer specifications. If your application requires an alternate material, please
contact our engineering teamto discuss your requirements.
Can your engineering team help recommend the best alloy for my application?

Yes. Our engineering team provides application-specific material selection support. We analyze operating temperature, sealing media, pressure, motion type, and expected service life to recommend the optimal alloy and spring design.
Contact usto discuss your project.

Spring Energizer Materials — Alloy Selection Hub

Explore Spring Energizer Materials

Cobalt-Nickel Alloys

High Temperature Nickel Alloys

Corrosion Resistant Nickel Alloys

Stainless Steel Alloys

Recommended Material Family by Application

Industries We Serve

Oil & Gas

Semiconductor

Medical

Chemical

Hydrogen

Marine

LNG

Aerospace

Vacuum

General Industrial

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