custom spring factory

China Leading Spring Manufacturer

Quote nOW

Our Products

COMPRESSION SPRING
EXTENSION SPRING SUPPLIER
CUSTOM SPRING SUPPLIER

China Best Spring Supplier & Manufacturer

Precision Engineering

Our springs are crafted to meet exact specifications, ensuring superior performance and reliability.

Wide Range of Materials

From stainless steel to specialized alloys, we work with a variety of materials to meet your requirements.

Customization

Whether you need compression springs, torsion springs, extension springs, or wire forms, we deliver custom solutions.

Competitive Pricing

Direct factory pricing ensures you get the best value for top-tier quality.

Fast Turnaround Time

Streamlined processes allow us to deliver your orders on time, every time.

Global Shipping

We efficiently handle international logistics to deliver anywhere in the world.

Our Factory Insight

custom spring factory

Spring Material Descriptions and Key Properties

STEEL WIRE CUSTOM SPRING

Springs are the unsung heroes in many industries, providing the flexibility, strength, and precision needed for countless applications. Whether you’re designing high-performance machinery or everyday tools, selecting the right material ensures reliability, durability, and cost-effectiveness. Let’s break down the essentials to help you make an informed decision!

1. Spring Steel: The Backbone of High-Performance Springs

Spring steels are incredibly popular due to their combination of elasticity, tensile strength, and fatigue resistance. They’re ideal for applications where springs are under constant stress or load.

Carbon Spring Steel (SWC)

  • Features:
    SWC is crafted through quenching and tempering, making it robust yet cost-effective. It’s available in grades suited for various load capacities and is perfect for applications requiring moderate to high hardness.
  • Typical Applications:
    • Automotive Industry: Suspension systems, valve springs, and clutch components.
    • Agricultural Tools: Load-bearing machinery like plows and seeders.
    • General Machinery: Gearboxes, tensioners, and balancing mechanisms.
  • Why Choose SWC?: Affordable, durable, and easy to process—perfect for everyday industrial use!

Alloy Spring Steel (SWP)

  • Features:
    Alloying elements enhance fatigue resistance and elasticity, making SWP suitable for heavy-duty applications. It performs exceptionally well under extreme loads and temperatures.
  • Typical Applications:
    • Heavy Machinery: Excavators, cranes, and industrial presses.
    • Energy Sector: Springs for wind turbines or hydroelectric generators.
    • Aerospace: Components subjected to high-frequency vibrations or extreme temperature shifts.
  • Why Choose SWP?: High resilience, excellent fatigue resistance, and unmatched durability for critical applications.

2. Stainless Steel: When Corrosion Resistance Matters

If your application involves exposure to moisture, chemicals, or extreme weather, stainless steel is your go-to material. These alloys are resistant to rust and ensure long-lasting performance.

304 Stainless Steel (Cr18Ni9)

  • Features:
    A versatile and cost-effective option with good corrosion resistance and moderate strength.
  • Typical Applications:
    • Food Processing Equipment: Springs for slicers, mixers, and dispensers.
    • Medical Devices: Surgical instruments and diagnostic tools.
    • Construction: Springs in railings, support structures, and façade systems.
  • Why Choose 304?: Affordable, widely available, and suitable for most non-corrosive environments.

316L Stainless Steel (Cr17Ni12Mo2)

  • Features:
    Enhanced corrosion resistance, especially in chloride or marine environments.
  • Typical Applications:
    • Marine Industry: Springs in boat engines, hatches, and navigation systems.
    • Chemical Plants: Valve springs and seals in corrosive environments.
    • Pharmaceuticals: Springs in hygienic environments requiring high purity.
  • Why Choose 316L?: Premium-grade resistance for challenging environments.

420 Stainless Steel

  • Features:
    Offers high hardness and wear resistance, making it ideal for precision applications.
  • Typical Applications:
    • Precision Engineering: Springs in watches, measuring tools, and cutting equipment.
    • Industrial Tools: Springs in drilling machines, clamps, and fasteners.
    • Aerospace: Critical components requiring tight tolerances and high strength.
  • Why Choose 420?: Unmatched precision and strength for specialized uses.

3. Specialty Materials for Unique Needs

Sometimes, your application calls for something extra. That’s where specialty materials like superalloys and high-strength composites come in.

  • Superalloys (e.g., Inconel, Monel): Perfect for high-temperature applications like gas turbines or nuclear reactors.
  • High-Strength Composites: Ideal for lightweight yet robust components in automotive or aerospace industries.

Real-Life Case Studies: Choosing the Right Material

  • Case 1: Marine Equipment Manufacturer
    A client designing springs for deep-sea applications chose 316L stainless steel for its superior resistance to saltwater corrosion. This decision doubled the service life of their products and reduced maintenance costs by 30%.

  • Case 2: Heavy Machinery Builder
    A manufacturer of industrial presses switched to SWP alloy steel for their tension springs. The result? Springs withstood 20% higher loads and lasted 50% longer under continuous operation.

  • Case 3: Food Processing Startup
    For springs in food slicers, 304 stainless steel was the perfect choice due to its affordability and compliance with food safety standards. The startup saved 15% on costs while ensuring hygienic performance.

Key Factors to Consider

  1. Load Requirements: Choose high-tensile materials for heavy loads or cyclic stresses.
  2. Environmental Conditions: Stainless steel is essential for corrosive or humid environments.
  3. Budget: Carbon steels are economical, while stainless steels offer long-term value in challenging conditions.
  4. Compliance Needs: Ensure materials meet industry standards (e.g., FDA, ASTM, or ISO).

The Chemical Composition Of Various Steel Grades Used In Spring Manufacturing

Serial No.Steel GradeC (%)Si (%)Mn (%)Cr (%)Mo (%)V (%)B (%)Ni (%)Cu (%)P (%)S (%)
1650.62–0.700.17–0.370.50–0.80≤ 0.25———0.250.25≤ 0.035≤ 0.035
2700.62–0.750.17–0.370.50–0.80≤ 0.25———0.250.25≤ 0.035≤ 0.035
3850.72–0.850.17–0.370.50–0.80≤ 0.25———0.250.25≤ 0.035≤ 0.035
465Mn0.62–0.700.17–0.370.90–1.20≤ 0.25———0.250.25≤ 0.035≤ 0.035
555Si2Mn0.52–0.601.50–2.000.60–0.90≤ 0.35———0.350.35≤ 0.035≤ 0.035
655Si2MnB0.52–0.601.50–2.000.60–0.90≤ 0.35——0.0005–0.0040.350.35≤ 0.035≤ 0.035
755Si2Mn VB0.52–0.600.70–1.001.00–1.30≤ 0.35—0.08–0.160.0005–0.00350.350.35≤ 0.035≤ 0.035
860Si2Mn0.56–0.641.50–2.000.60–0.90≤ 0.35———0.350.35≤ 0.035≤ 0.035
960Si2MnA0.56–0.641.60–2.000.60–0.90≤ 0.35———0.350.35≤ 0.035≤ 0.030
1060Si2CrA0.56–0.641.40–1.800.40–0.700.70–1.00———0.250.25≤ 0.035≤ 0.030
1155CrVA0.56–0.641.40–1.800.40–0.700.90–1.20—0.10–0.20—0.250.25≤ 0.035≤ 0.035
1260CrMnA0.56–0.640.17–0.370.70–1.000.70–1.00———0.250.35≤ 0.035≤ 0.035
1350CrVA0.46–0.540.17–0.370.50–0.800.80–1.10—0.10–0.20—0.250.25≤ 0.035≤ 0.035
1430CrV2A0.26–0.340.17–0.37≤ 0.402.00–2.50—0.50–0.804.4–5.00.350.35≤ 0.035≤ 0.035

Heat Treatment Process of Springs

Spring heat treatment is essential for optimizing mechanical properties, ensuring durability, and enhancing fatigue resistance. Various strengthening techniques, such as quenching, tempering, and surface treatments, are applied based on material type and application requirements.

The heat treatment process for springs can be categorized into three types:

  1. Quenching and Tempering: Applied to high-carbon steel and alloy springs to improve hardness and elasticity.
  2. Cold Work Strengthening: Used for materials like stainless steel wires and strips that undergo work hardening instead of traditional quenching.
  3. Aging Treatment: Applied to certain heat-treated alloy materials for additional stabilization.

The quenching process ensures uniform martensitic transformation, followed by tempering to relieve stress and enhance toughness. Techniques such as isothermal tempering further improve plasticity and toughness, ensuring the spring maintains dimensional accuracy and mechanical stability.

Table: Summary of Spring Heat Treatment Methods

Process TypeDescriptionMaterials UsedKey Effects
Quenching & TemperingHeating above Ac3, holding, then rapid cooling and tempering.High-carbon steel, alloy steelIncreases strength, hardness, and elasticity.
Cold Work StrengtheningUses mechanical deformation instead of heat treatment.Stainless steel wire, cold-rolled steel stripsEnhances work-hardening properties.
Aging TreatmentAdditional heat stabilization after initial processing.Certain alloy materialsImproves stability and strength.
Isothermal QuenchingMaintains temperature above Ms, cools in molten salt.High-carbon steel, alloy springsEnhances toughness and plasticity.
Controlled TemperingGradual cooling to prevent deformation.Precision springs, mechanical componentsReduces internal stress and ensures accuracy.

This structured approach ensures that each heat treatment method is aligned with specific material properties and application requirements for optimized performance.

 

The heat treatment of springs:

 Heat Treatment Methods for Springs

MethodProcess DescriptionKey BenefitsCommon Applications
Conventional Heat TreatmentHeating and cooling steel to adjust mechanical propertiesIncreases strength, elasticity, and durabilityMedium to high-carbon steel springs
Surface Hardening TreatmentCarburizing, nitriding, or induction hardening of the outer layerEnhances wear resistance while keeping core toughnessAutomotive and industrial springs
Aging & TemperingHeat treatment to relieve internal stresses and refine microstructureImproves stability and mechanical consistencyPrecision and high-load springs

 Isothermal Quenching Standards for Common Spring Steels

Steel GradeAustenitizing Temperature (°C)Isothermal Quenching Temperature (°C)Cooling Time (min)Hardness (HRC)
65820 ± 10320 – 34015 – 2046 – 48
60Si2MnA870 ± 1026020 – 2550 – 52
50CrVA850 ± 1030020 – 2555 – 57

Comparison of Isothermal Quenching vs. Conventional Quenching

Steel TypeHeat Treatment ProcessHardness (HRC)Tensile Strength (MPa)Yield Strength (MPa)Elongation (%)Impact Toughness (J/cm²)
50CrVAConventional Quenching + Tempering48175015001044
60Si2MnAIsothermal Quenching + Tempering47190017501146
65Si2MnWAIsothermal Quenching + Tempering5021001980943

This table format provides a clear and organized comparison of different heat treatment techniques for springs.

What Our Customer Say?

client1.jpg

Xiamen Linspring was able to manufacture my custom order to specifications and was helpful and communicatie along the  way.The quality of the delivered product was good.

Kristy Brooks
client2.jpg

This was my second order with Linspring. The seller is great to communicate with and the spring were perfect,just like the first order. Thank you for your prompt,courteous.

Jason Mark
client3.jpg

Very happy with our custom springs. On time and shipping was fast

Barbara Simonds

Custom Spring Process

Custom spring from China process
Custom spring from China process
Custom springs from China process

How to Custom Spring From China Manufacturer Linsping ?

custom spring from China factory

The Ultimate Guide to Custom Springs

Springs are essential components in countless industries, from automotive and aerospace to medical devices and household appliances. Custom springs, in particular, offer tailored solutions to meet specific requirements for performance, size, material, and application. Designing a custom spring requires careful consideration of numerous factors, from functionality to environmental conditions.

 

Types of Custom Springs

  1. Compression Springs

    • Designed to compress under load and return to their original shape when the load is removed.
    • Used in automotive suspension systems, valves, and electronics.

  2. Tension Springs

    • Work by extending under load and returning to their original length when the load is removed.
    • Commonly used in garage doors, trampolines, and industrial machinery.

  3. Torsion Springs

    • Operate by twisting around an axis to exert torque.
    • Ideal for hinges, mousetraps, and automotive tailgates.

  4. Flat Springs

    • Thin, flat components that flex under load.
    • Found in clips, battery contacts, and seals.

  5. Specialty Springs

    • Custom-shaped springs for unique applications.
    • Examples include conical springs, hourglass springs, and dual-action springs.

Materials for Custom Springs

Choosing the right material is critical for the performance and durability of a custom spring. Some common materials include:

  1. Carbon Steel

    • Affordable and versatile.
    • Suitable for general applications.
    • Not ideal for environments with high corrosion or extreme temperatures.

  2. Stainless Steel

    • Corrosion-resistant and durable.
    • Suitable for outdoor or marine applications.
    • More expensive than carbon steel.

  3. Alloy Steel

    • High strength and excellent fatigue resistance.
    • Often used in heavy-duty industrial applications.

  4. Phosphor Bronze and Beryllium Copper

    • Excellent electrical conductivity and corrosion resistance.
    • Commonly used in electrical and marine applications.

  5. Titanium

    • Lightweight and corrosion-resistant.
    • Ideal for aerospace and medical applications.

  6. Inconel and Other Superalloys

    • Designed for extreme heat and corrosive environments.
    • Commonly used in turbines and chemical processing.

Design Considerations for Custom Springs

When designing a custom spring, there are several factors to consider:

  1. Spring Type: Choose the appropriate spring type (compression, tension, etc.) based on the application.

  2. Load Requirements:

    • Determine the maximum and minimum load the spring must handle.
    • Consider the deflection needed to achieve the desired performance.

  3. Spring Dimensions:

    • Outer diameter, inner diameter, wire diameter, and free length.
    • Space constraints within the application.

  4. Material Selection: Choose a material that meets the application’s environmental, strength, and durability requirements.

  5. Stress and Fatigue:

    • Evaluate the operating stress to ensure the spring can withstand repeated use.
    • Design for fatigue resistance if the spring will undergo cyclic loading.

  6. Operating Environment:

    • Consider factors like temperature, moisture, and exposure to chemicals.
    • Use coatings or finishes for added protection if necessary.

  7. End Type:

    • Compression springs: Closed or open ends.
    • Tension springs: Loops or hooks.

  8. Manufacturing Constraints:

    • Work with a manufacturer to ensure the design can be produced cost-effectively.

Steps to Customizing a Spring

  1. Define Your Requirements:

    • Clearly outline the spring’s purpose, load, and dimensions.
    • Specify environmental factors like temperature and exposure to corrosive substances.

  2. Choose a Material:

    • Select the material based on the required strength, flexibility, and environmental resistance.

  3. Work with LINSPRING:

    • Share your specifications, including CAD drawings or detailed diagrams if available.

  4. Prototype Development:

    • Request a prototype to test the design.
    • Make adjustments based on real-world performance.

  5. Final Production:

    • Approve the final design for production.

Tips for Working with a Custom Spring Manufacturer

  1. Provide Clear Specifications:

    • Include detailed measurements, load requirements, and material preferences.

  2. Request Samples:

    • Test prototypes before committing to large-scale production.

  3. Discuss Compliance:

    • Ensure the springs meet industry standards like ISO, ASTM, or DIN specifications.

  4. Leverage Expertise:

    • Take advantage of the manufacturer’s experience to optimize the design.

  5. Plan for Scalability:

    • Ensure the design can be mass-produced if needed.

Custom springs are a game-changer for applications that demand precision, performance, and reliability. By carefully considering factors like material, design, and operating environment, you can create a spring that perfectly suits your needs. Partnering with a trusted manufacturer LIKE LINSPRING ensures a seamless process from design to production, helping you achieve optimal results.

 

Ready To Custom Right Spring?

custom compression springs
compression spring factory

Still unsure which material fits your needs? Let’s discuss your specific application. Whether it’s automotive, aerospace, or precision engineering, we can help you select the perfect material tailored to your requirements.

Would you like a tailored recommendation or a deeper dive into one of the materials? Let’s make your project a success!

At Xiamen Lin Spring Manufacturing, we specialize in producing high-quality custom springs for various industries.

Company

Contact info

Email: sales@linspring.net

Phone:+86-13599531763

Address: Unit 502, floor 5, Building B, # 1 workshop, Auto Industry City Parts Supporting Center (phase iv), Guankou Town, Jimei District, Xiamen,Fujian,China

Connect

Facebook-f Youtube Linkedin

Ask For A Quick Quote

We will contact you within 1 working day.

Open chat
Powered by Joinchat
Hello 👋
Can we help you?