Why Choose Stainless Steel Springs?
Stainless steel springs are known for their excellent corrosion resistance, temperature tolerance, and durability in harsh environments. Whether you’re working with outdoor equipment, food-grade devices, medical tools, or chemical systems, stainless steel is a dependable material that performs reliably over time.
At Hootai, we specialize in crafting custom stainless steel springs for specialized applications. With over 40 years of manufacturing experience, we’re your trusted partner for precision and performance.
304 Stainless Steel
Key Features:
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Excellent corrosion resistance in most indoor and dry outdoor environments
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Non-magnetic in annealed condition (slightly magnetic when cold worked)
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Good formability and weldability
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Economical and widely available
Best For:
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Consumer goods
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General industrial equipment
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Mildly corrosive environments
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Springs that don’t require high stress or extreme fatigue performance
If your application doesn’t involve salt, high humidity, or chemicals — 304 is a reliable, cost-effective option for general-purpose compression, extension, or torsion springs.
316 Stainless Steel
Key Features:
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Contains molybdenum, improving resistance to chlorides and acidic conditions
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Excellent choice for marine, food processing, and chemical environments
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Maintains integrity in high-moisture and corrosive atmospheres
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Non-magnetic in most conditions
Best For:
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Marine equipment
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Food-grade or sanitary applications
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Chemical pumps, valves, and fittings
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Medical and outdoor devices
If your spring will face salt spray, cleaning chemicals, or corrosive vapors, 316 is the go-to choice. While slightly more expensive than 304, it offers longer lifespan and greater peace of mind in tough conditions.
17-7 PH Stainless Steel (SUS631)
Key Features:
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Precipitation-hardened stainless steel for high tensile strength
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Excellent fatigue resistance under repeated stress cycles
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Maintains spring properties in temperatures up to 650°F (343°C)
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Can be heat-treated for even higher performance
Best For:
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Aerospace mechanisms
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Motor brake springs
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Precision devices requiring long fatigue life
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High-performance machinery components
When strength and spring memory over long cycles matter, 17-7 PH is unmatched. It’s ideal for mission-critical parts that require tight tolerances, consistent force, and long-term reliability, especially in compact or load-bearing applications.
Still Not Sure? Let Our Engineers Help
Every project is unique. If you’re unsure which grade is right for your spring design, we offer:
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✅ Free engineering consultation
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✅ Custom material sourcing based on specs
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✅ Support for special coatings or hybrid assemblies
Send us your working environment and performance goals — we’ll recommend the optimal solution.
Related Spring products
Stainless Steel Spring Questions Answered
Not under normal conditions. Grades like 316 are highly corrosion-resistant even in marine or chemical environments.
Yes! We accept orders starting from just 1 piece.
Yes, both. We can improve surface finish and corrosion resistance upon request.
Absolutely. Send us the part or image with basic dimensions, and our team will reverse-engineer it.