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Help CenterCustom 316L Stainless Steel Compression Springs, 1mm-10mm OD, 1-1000N Load, Mill Test Report
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As a dedicated manufacturer since 1998, Anping County Boli Hardware Wiremesh Products Factory specializes in producing high-quality custom 316L stainless steel compression springs with outer diameters ranging from 1mm to 10mm and load capacities from 1N to 1000N. Our springs are engineered to meet the demanding requirements of industries such as automotive, medical devices, aerospace, and industrial machinery. Backed by an annual export value of US$5-10 million, we offer reliable, precision-manufactured components that come with a Mill Test Report for full material traceability.
Our 316L stainless steel compression springs provide superior corrosion resistance, excellent fatigue life, and consistent performance under extreme temperatures. Whether you need a small spring for delicate electronics or a robust spring for heavy-duty machinery, we can customize the dimensions, wire diameter, and end configurations to fit your exact specifications.
Below you will find the key technical specifications, advantages, and detailed information about our product.
Key Features & Technical Specifications
| Parameter | Value Range | Notes |
|---|---|---|
| Material | 316L Stainless Steel | Low carbon, enhanced corrosion resistance |
| Outer Diameter (OD) | 1mm – 10mm | Custom sizes available upon request |
| Load Capacity | 1N – 1000N | Precision tested per customer requirements |
| Wire Diameter | 0.1mm – 2mm (customizable) | Optimized for spring performance |
| Free Length | Customizable | From 2mm up to 100mm+ |
| End Types | Closed & Ground, Open, Custom | Ground ends provide flat bearing surfaces |
| Surface Finish | Passivated, Plain, or as requested | Enhances corrosion resistance |
| Testing & Reports | Mill Test Report included | Chemical composition and mechanical properties |
Product Advantages
- Superior Corrosion Resistance: 316L stainless steel contains molybdenum, offering excellent resistance to chlorides, acids, and harsh environments. Ideal for marine, chemical, and medical applications.
- High Precision & Consistency: Our CNC coiling machines and automated testing equipment ensure each spring meets tight tolerances (±0.01mm on OD and free length).
- Customizable Load Range: With load capacities from 1N to 1000N, we can design springs for delicate sensors or heavy-duty presses.
- Full Material Traceability: Every order comes with a Mill Test Report (MTR) verifying the 316L stainless steel grade, chemical composition, and mechanical properties.
- Flexible End Configurations: Closed & ground ends provide stable seating; open ends allow for easy assembly. We can also design custom ends (e.g., hooks, loops) upon request.
- Excellent Fatigue Life: Shot peening or stress relieving options are available to extend spring life in cyclic loading applications.
- Fast Lead Times: As a manufacturer with over 25 years of experience, we offer efficient production cycles – typically 5-15 working days for custom orders, depending on complexity.
Customer Benefits
- Cost Savings: Direct factory pricing eliminates middlemen, especially for volume orders. Annual export value of US$5-10 million ensures competitive rates.
- Reliability: Springs are tested for load, deflection, and dimensional accuracy. Our quality control system rejects non-conforming parts before shipment.
- Global Shipping: We ship from Tianjin, Qingdao, or Shanghai ports to markets worldwide including North America, Europe, Asia, Oceania, and Africa.
- Technical Support: Our engineering team can assist with spring design, material selection, and stress analysis to optimize your application.
Why Choose Anping County Boli Hardware Wiremesh Products Factory?
Since our establishment in 1998, we have grown into a trusted supplier for global clients. With an annual export value of US$5-10 million, we have shipped thousands of orders to diverse markets including North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our factory is located in Hengshui, Hebei – the renowned hardware industrial hub of China. We leverage advanced spring coiling machines, heat treatment furnaces, and precision testing instruments to ensure every spring meets your specifications.
We take pride in our Mill Test Reports which accompany each shipment, giving you full confidence in the material quality. Our team is dedicated to providing prompt responses, competitive pricing, and on-time delivery. Whether you need a prototype or a large production run, we are ready to serve you.
Contact us today to discuss your custom compression spring requirements. We are committed to delivering springs that perform flawlessly in your application.
Frequently Asked Questions (FAQ)
Q1: What is the typical lead time for custom 316L compression springs?
A: For standard custom sizes (OD 1-10mm, load 1-1000N), lead time is usually 5-15 working days. Larger quantities or complex configurations may require 20-25 working days. We can expedite for urgent orders.
Q2: Can you provide springs with a smaller outer diameter than 1mm?
A: Yes, we can produce springs with OD as small as 0.5mm using specialized micro-coiling equipment. Please contact us with your specific requirements.
Q3: Do you offer free samples for testing?
A: We can provide samples at cost, which is refundable for mass production orders. Sample lead time is typically 3-7 working days.
Q4: What is a Mill Test Report and why is it important?
A: A Mill Test Report (MTR) is a quality assurance document that certifies the chemical composition and mechanical properties of the 316L stainless steel used. It is crucial for applications requiring material traceability, such as medical devices or aerospace components.
Q5: Can you customize the spring rate (stiffness) to a specific value?
A: Absolutely. We can design springs to achieve your desired spring rate (N/mm) by adjusting wire diameter, coil diameter, number of active coils, and free length. Our engineering team will help you optimize the design.
Q6: What surface treatments are available for 316L compression springs?
A: Standard surface finish is passivated (per ASTM A967) to enhance corrosion resistance. We also offer plain, electropolished, or coated finishes (e.g., PTFE, Xylan) upon request.
Q7: How do you ensure the springs meet the required load tolerance?
A: We use computerized spring testing machines to measure load at specified heights. Springs are sorted into tolerance grades (e.g., ±5%, ±10%) as per your requirement. A test report can be provided if needed.
Q8: Do you ship internationally? What are the packaging options?
A: Yes, we ship to all major markets worldwide. Springs are packaged in export-grade cartons, then palletized and wrapped with stretch film to prevent damage during transit. We can also use custom packaging (e.g., plastic tubes, trays) upon request.
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