SUS316 Waved Spring: Corrosion-Resistant Wave Spring for Marine & Chemical Industries
dacromet wave spring
,dacromet waved spring
,mechanical wave spring
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)?
