Engineered for demanding applications requiring ultra-high tensile strength, non-magnetic properties, corrosion resistance, and long-term reliability.
Handa Spring is a custom MP35N spring manufacturer specializing in spring energizers. We manufacture Canted Coil Springs, Garter Springs, and other custom spring profiles using MP35N precision wire. Whether you have detailed production drawings or need engineering support, we provide rapid quotation, prototype production, custom tooling, and stable volume manufacturing for customers worldwide.
Custom Spring Manufacturing Engineering Review Before Production Prototype & Small MOQ Available Fast Quotation & Global DeliveryOverview
MP35N is a non-magnetic nickel-cobalt-chromium-molybdenum alloy offering a unique combination of ultra-high tensile strength (up to 300 ksi / 2068 MPa), excellent corrosion resistance, and high fatigue strength. At Handa Spring, we combine material expertise with precision wire forming to deliver springs that perform consistently in demanding sealing applications.
MP35N is highly resistant to sulfide stress corrosion cracking and provides excellent performance in the most demanding sour well environments. In seawater, MP35N is virtually immune to crevice and stress corrosion and pitting even at the highest strength levels.
Whether you have detailed drawings or need engineering support, Handa Spring delivers custom MP35N spring energizers with the right combination of material knowledge and manufacturing capability.
Spring Types
Each spring type has different manufacturing characteristics. The following overview highlights the
key differences in forming method and tooling requirements.
Manufacturing Method: Precision wire forming
Tooling & Manufacturing
Different spring types require different manufacturing methods. The table below shows which spring types
can be produced without dedicated tooling and which require custom tooling development.
| Spring Type | Manufacturing Method | Tooling Status |
|---|---|---|
| Canted Coil Spring | Precision wire forming | No dedicated tooling required |
| Garter Spring | Precision wire forming | No dedicated tooling required |
| Helical Spring | Subject to verification | Contact engineering |
| Full Contact Spring | Subject to verification | Contact engineering |
Tooling options explained: For wire-formed springs (Canted Coil, Garter), no tooling is required, enabling fast prototypes and flexible customization. For other spring types, material availability and tooling requirements should be verified with our engineering team.
Manufacturing
Selecting the right material is only the first step. Consistent spring performance depends on manufacturing capability, tooling, and process control.
At Handa Spring, we manufacture finished spring energizers—not raw material. Every production stage is controlled to achieve the required spring force, dimensional accuracy, and repeatability.
Every spring is manufactured according to customer drawings or application requirements. We support both standard dimensions and fully customized spring geometries.
MP35N is available as precision spring wire. Wire-formed spring types such as Canted Coil Springs and Garter Springs can be manufactured without dedicated tooling, allowing fast prototype delivery and flexible customization.
Canted Coil Springs and Garter Springs can be manufactured without dedicated tooling, allowing fast prototype delivery and flexible dimensional customization.
Spring force is one of the most critical parameters affecting sealing performance. By adjusting geometry, material condition and manufacturing processes, we can customize spring force to meet customer requirements.
Additional processes available include precision welding, heat treatment, ultrasonic cleaning, passivation, spring cutting to specified lengths, and spring force testing—selected according to project requirements.
Manufacturing feasibility is reviewed before quotation to identify tooling, forming, and tolerance considerations at an early stage.
Why Handa Spring
Serving customers across North America, Europe and Asia. Thousands of custom spring designs manufactured.
Decades of spring manufacturing experience.
Adjusted through geometry and process control
From samples or existing components
Before production, not after
For manufacturability and cost
Consistent from prototype to production
Testing before volume manufacturing
Recommendations when appropriate
No sales gatekeepers between you and our engineers
Over the years, Handa Spring has supplied custom MP35N spring energizers to seal manufacturers, engineering firms, and equipment OEMs across North America, Europe, and Asia. Our objective is to become part of our customers’ engineering process—from prototype development through long-term production.
Engineering Experience
Over years of manufacturing custom spring energizers for customers worldwide, Handa Spring has accumulated practical experience across a wide variety of spring geometries, materials, and production requirements.
Supporting customers across aerospace, semiconductor, energy, medical equipment, analytical instrumentation, and industrial sealing applications. MP35N is specified for ultra-high strength and non-magnetic applications.
Direct communication between customers and engineers helps resolve technical questions efficiently throughout the project. Video meetings and drawing reviews are available whenever required, with no sales gatekeepers in between.
Questions regarding manufacturing feasibility, lead time, tooling, or spring design are reviewed quickly by our engineering team to reduce project delays and keep production on schedule.
Support continues beyond production through technical consultation, repeat orders, process improvements, and future design optimization. We aim to be a long-term manufacturing partner, not just a spring supplier.
These factors often have a greater influence on final spring performance than material selection alone.
Comparison
For customers who have already selected MP35N, this table is for reference only.
| Material | Best For |
|---|---|
| MP35N | Ultra-high strength, non-magnetic, sour gas, seawater applications |
| Elgiloy | Dynamic applications requiring maximum fatigue life |
| Inconel X-750 | Higher continuous operating temperatures |
If material selection is uncertain, Handa Spring can manufacture spring energizers in multiple alloys according to customer specifications.
FAQ
Common questions about custom MP35N spring energizers.
Can you manufacture MP35N springs according to our drawings?
Which spring types can be manufactured in MP35N?
Do all spring types require tooling?
Can you customize spring force?
What is your minimum order quantity?
Can you provide prototypes?
Do you provide engineering support before production?
Can you recommend alternative materials?
Contact Handa
Upload Drawing → Receive Engineering Review → Quotation → Prototype → Production
Send us your drawings or specifications, and our engineering team will review your project before quotation.
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