SUS316 Waved Spring: Corrosion-Resistant Wave Spring for Marine & Chemical Industries
Product Details
| Material: | SUS316 Stainless Steel | Alloy Composition: | 18-10 Chromium-nickel With 2-3% Molybdenum |
|---|---|---|---|
| Tensile Strength: | 580-750 MPa | Yield Strength: | ≥205 MPa |
| Axial Preload: | 5-500 N | Temperature Range: | -270°C To 450°C |
| Salt Spray Resistance: | 1,000+ Hours (ASTM B117) | Acetic Acid Resistance: | 500+ Hours (ASTM G85) |
| Sulfuric Acid Resistance: | ≤10% Concentration | Wave Profile Peaks: | 3-16 Peaks |
| Thickness Range: | 0.2-3mm | Dimensional Tolerance: | ±0.02mm |
| Heat Treatment: | 1050°C Solution Annealing + Water Quenching | Dacromet Coating Thickness: | 5-8μm |
| Zinc Plating Thickness: | 8-12μm | Multi-layer Load Capacity: | Up To 1,000 N |
| Minimum Axial Height: | 3mm | Fatigue Life: | 10⁶ Cycles At 70% Rated Load |
| Corrosion Resistance: | 1,500+ Hours Salt Spray (with Dacromet) | Wear Resistance Improvement: | 35% (with Mechanical Zinc Plating) |
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Product Description
SUS316 stainless steel—an 18-10 chromium-nickel alloy with 2-3% molybdenum—forms the core of this high-performance waved spring. The molybdenum addition creates a dense passive oxide layer (Cr₂O₃) that resists pitting, crevice corrosion, and chloride-induced stress cracking, outperforming SUS304 by 300% in marine and chemical environments.
Withstands 1,000+ hours of neutral salt spray (ASTM B117) and 500+ hours of acetic acid salt spray (ASTM G85), ideal for:
- Shipboard hydraulic seal systems (rudder actuators, propeller shaft seals)
- Offshore oil platform valves and subsea equipment exposed to seawater and H₂S
Resists aggressive media including sulfuric acid (≤10% concentration), sodium chloride brines, and organic solvents, critical for:
- Reactor agitator shaft seals in pharmaceutical production
- Precision metering pumps in petrochemical refining
CNC-formed wave profiles (3-16 peaks, 0.2-3mm thickness) with ±0.02mm dimensional tolerance, validated via 3D optical scanning. Heat treatment (1050°C solution annealing + water quenching) optimizes grain structure for corrosion resistance.
- Dacromet Coating: Zinc-aluminum flake layer (5-8μm) enhances corrosion resistance to 1,500+ hours salt spray, ideal for coastal installations
- Mechanical Zinc Plating: 8-12μm thickness improves wear resistance by 35%, suitable for dynamic applications like valve actuators
Non-standard designs include multi-layer stacks for high-load scenarios (up to 1,000 N) and tapered waveforms for space-constrained assemblies (minimum axial height 3mm).
Full mill test reports (MTR per EN 10204 3.1) and batch-level spectrometric analysis ensure alloy consistency.
- Intergranular corrosion testing (ASTM A262 Practice E) to verify resistance to sensitization
- Fatigue life validation (10⁶ cycles at 70% rated load) for dynamic applications
Complies with ASTM A276, ISO 10243, and AS9100D, meeting marine (ABS, DNV) and chemical (API 6A) standards.
Our engineering team provides end-to-end assistance:
Would you like to expand on SUS316 vs. duplex stainless steel performance comparisons or specific marine application case studies (e.g., offshore wind turbine hydraulic systems)?
Product Highlights
SUS316 waved spring offers superior corrosion resistance for marine & chemical industries. With molybdenum-enhanced alloy, extreme temperature stability (-270°C to 450°C), and custom designs. Certified to marine/chemical standards with full material traceability.
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