Stainless Steel 304 Compression Spring
Corrosion resistant compression springs with custom dimensions for demanding applications.
Product Overview
Our SUS304 stainless steel compression springs provide excellent corrosion resistance while maintaining stable force output in outdoor or humid environments. Available with custom wire diameter, outer diameter, free length, and spring rate. 48-hour sampling available. Ideal for outdoor equipment, food machinery, and medical devices (non-implant).
Technical Features & Benefits
| Feature |
Advantage to You |
| Premium SUS304 |
Resists moisture, oxidation, and mild acids/alkalis; suitable for outdoor and food contact applications |
| Passivation / Electropolish |
Enhances corrosion resistance and meets cleanliness requirements for medical/food industries |
| Custom Rate & Size |
Precisely designed to your load and space requirements with no compromise on non-standard sizes |
| 100% Load Sampling |
Spring rate test report provided per batch ensures performance consistency |
| Small Batch Welcome |
Order from 100 pieces; no MOQ for samples; no tooling fee |
Technical Specifications
| Specification Item |
Detail / Capability |
Notes / Description |
| Material Grade |
SUS304 (A2) |
SUS316 optional |
| Wire Diameter |
0.15mm - 2.5mm |
±0.003mm |
| Outer Diameter |
1.8mm - 25mm |
±0.02mm |
| Free Length |
3mm - 120mm |
Custom per drawing |
| Spring Rate |
0.2 - 400 N/mm |
Calculated per load |
| Surface Finish |
Passivated / Electropolished / Ni plated |
Electropolish Ra≤0.4µm |
| Salt Spray Test |
≥72hr NSS (passivated) |
Extendable to 200hr with Ni plate |
| Operating Temp |
-40°C - 250°C |
Intermittent |
Applications
- Outdoor Electronics: Return and buffer springs for smart water meters, gas meters, and outdoor camera gimbals
- Food Processing Equipment: Springs that contact food materials inside coffee machines, juicers, and vending machines (food contact grade)
- Medical Devices (Non-Implant): Precision springs for monitors, diagnostic equipment, and rehabilitation devices requiring resistance to disinfectant wipes
Frequently Asked Questions
Can you handle complex custom designs and provide design optimization suggestions?
Absolutely. This is our core expertise. We provide free DFM analysis within 3-5 days, often helping clients achieve 15-30% cost reduction through design for manufacturability.
How do you ensure quality consistency and handle defect issues?
We implement a rigorous 4-stage QC system with 100% full inspection. Our track record shows 99.99% qualification rate.
What are your lead times and how do you handle urgent orders?
Standard lead times: 3-7 days for prototypes, 7-15 days for mass production. We offer VIP prioritization cutting lead times by up to 30%.
Will I get timely responses and professional support throughout the project?
Yes. You get a 1v1 exclusive consultant with 1-hour initial response commitment and 24-hour technical support.
Can you provide material certifications and environmental compliance reports?
Yes. We provide material certifications and environmental test reports (RoHS, REACH compliant) upon request.
How do you protect my designs and intellectual property?
We start with mutual NDA and implement strict mold ownership protection and confidential data security measures.
What are your payment terms and MOQ requirements?
We offer flexible payment terms (T/T, L/C at sight) and MOQ from 1 piece for prototyping.
