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304 Stainless Steel Compression Springs | Custom Manufacturer | Seme Hardware
304 Stainless Steel Compression Springs – Precision Industrial Custom Springs
304 stainless steel compression springs are widely used across industrial sectors for their outstanding reliability and corrosion resistance. As a premium austenitic stainless steel, grade 304 offers an excellent balance of high mechanical strength, good formability, and natural anti‑rust performance.
It forms a protective chromium‑oxide layer without requiring any additional coating, making it highly reliable for food processing, marine components, outdoor machinery, and other harsh environments.
Key Advantages of 304 Stainless Steel Compression Springs
| Property | Benefit |
|---|---|
| Excellent Corrosion Resistance | Resists moisture, chemicals, salt spray, and acids |
| High Tensile Strength | ≥ 520 MPa, suitable for heavy‑duty loads |
| Good Heat Resistance | Continuous use up to 425°C; intermittent up to 870°C |
| High Ductility & Formability | Supports complex custom coil designs |
| Non‑Magnetic (Annealed) | Ideal for electronic and medical equipment |
| Wide Temperature Range | Stable performance from sub‑zero to 288°C |
Custom Technical Specifications
We manufacture compression springs strictly according to your drawings or samples, with all parameters fully customizable.
| Parameter | Description | Typical Range / Options |
|---|---|---|
| Wire Diameter | Spring wire thickness | 0.1 mm – 20 mm (custom) |
| Outer / Inner Diameter | Coil dimensions | Fully custom |
| Free Length / Solid Height | Compression length | Fully custom |
| Active Coils / Spring Rate | Force performance | Fully custom |
| End Types | Spring end configuration | Closed & ground, closed & squared, open ends |
| Surface Treatment | Finishing options | Passivation, electropolishing, plating, powder coating |
Professional Surface Treatments
Additional surface treatments further enhance durability and help meet industry‑specific standards.
| Treatment | Benefits | Typical Applications |
|---|---|---|
| Passivation | Maximum corrosion resistance, ASTM A967 compliant | Medical, food processing, marine |
| Electropolishing | Smooth surface, easy to clean | Pharmaceutical, semiconductor |
| Zinc Plating | Cost‑effective protection | General industrial, automotive parts |
| Nickel Plating | Wear resistance & decorative appearance | Electronics, precision instruments |
| Powder Coating | Thick protection, custom colors | Outdoor & agricultural machinery |
| Zinc Flake Coating | 500+ hours salt spray resistance | Heavy‑duty industrial equipment |
Industrial Applications
Our 304 stainless steel compression springs deliver stable, high‑cycle performance across multiple industries.
Medical & Healthcare – Surgical instruments, diagnostic devices, MRI‑compatible components
Automotive & Transportation – Suspension, braking, engine, and fuel system parts
Food & Pharmaceutical – Sanitary conveyors, filling and packaging equipment
Industrial Automation – Valves, switches, robotics, and shock absorption systems
Marine & Outdoor – Seawater‑resistant parts, construction and farm machinery
Electronics & Home Appliances – Contacts, switches, and household devices
Manufacturing Capabilities | OEM & ODM
With over 10 years of production experience, we provide one‑stop custom spring solutions.
In‑house mold design & CNC precision coiling
Professional heat treatment for optimized mechanical properties
100% full inspection for all finished goods
Rapid prototyping: samples in 7–10 working days
Flexible order volumes – from pilot runs to mass production
Global export & complete logistics support
Strict Quality Control
We follow a comprehensive quality management system to guarantee product compliance.
✅ Raw material traceability & certification
✅ First Article Inspection (FAI) before production
✅ In‑process monitoring + final 100% inspection
✅ Optional salt spray & fatigue life testing
✅ RoHS, material certificates, and inspection reports available
Why Choose SEME Hardware
ISO 9001:2015 certified factory
Factory direct pricing – no middleman
Free engineering & DFM design support
Fast sample delivery & flexible MOQ
100% quality guarantee
DDP shipping service available globally
Order Process
Send drawings, samples, or detailed parameters
Technical review & design optimization suggestions
Sample production (7–10 working days)
Sample confirmation & document issuance
Mass production under strict quality control
Final inspection & on‑time delivery
Frequently Asked Questions (FAQ)
Q1: What is the difference between 304 and 316 stainless steel for compression springs?
316 offers superior resistance to chlorides and acidic environments, making it ideal for marine and chemical applications. For most industrial, food, and medical uses, 304 provides excellent performance at a more cost‑effective price.
Q2: Can 304 stainless steel compression springs be used in high‑temperature environments?
Yes. Continuous operation up to 425°C; intermittent use up to 870°C is possible. However, prolonged exposure above 425°C may gradually reduce corrosion resistance.
Q3: Will 304 stainless steel compression springs rust?
304 stainless steel resists rust under normal conditions thanks to its passive chromium‑oxide layer. For extreme salt spray or acidic environments, consider 316 material or additional surface coating.
Q4: What is your MOQ and lead time?
We offer flexible MOQ. Sample lead time: 7–10 working days. Mass production: 15–25 working days (depending on quantity and complexity).
Q5: What information do you need to provide a quotation?
Drawings or samples (preferred), wire diameter, outer diameter, free length, load requirements, surface treatment (if any), and estimated order quantity.
Q6: Do you provide material certificates?
Yes. We provide full material certificates, RoHS compliance documentation, and dimensional inspection reports for every order.
Contact Us
Send your specifications today – we will reply with a professional quotation within 24 hours.
📧 Email: [email protected]
📞 WhatsApp / WeChat / Phone: +86 186 6511 1545
🌐 Website: www.semehardware.com
📍 Address: Building 1, No. 48 Minghua Road, Shijie Town, Dongguan City, Guangdong Province, China
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