Corrosion Resistant Steel Compression Springs 316L Helical Extension Spring
Corrosion Resistant Steel Compression Springs 316L Helical Extension Spring
Basic Properties
Place of Origin:
Sihong, China
Brand Name:
Sunzo
Certification:
CE/IATF16949/45001/14001/9001
Trading Properties
Minimum Order Quantity:
Negotiable
Price:
Negotiable
Payment Terms:
Negotiable
Product Summary
Corrosion-resistant compression springs for marine & chemical industries. Made from 316L, Hastelloy C276, or Duplex 2205 stainless steel. Withstands salt spray, chemicals & humidity. ISO 9001 certified with custom options available.
Product Custom Attributes
Highlight
ASTM B117 steel compression springs
,steel compression springs 316L
,316L helical extension spring
Material:
316L Stainless Steel, Hastelloy C276, Duplex 2205 Stainless Steel
Salt Spray Resistance:
1,000-hour ASTM B117
Corrosion Resistance:
PREN > 40
Surface Finish:
Ra < 0.2μm
Coating Thickness:
10μm Nickel-plated
Heat Treatment:
1050°C Solution Annealing
Cleanliness Standard:
ISO 16232-11
Pitting Resistance:
ASTM G48, 72 Hours
Salt Fog Resistance:
5,000-hour In 5% Salt Fog
Acid Resistance:
98% Sulfuric Acid, 500+ Hours
Dynamic Seawater Test:
2,000-hour
Corrosion Rate:
<0.01mm/year
Operating Temperature:
85°C
Cleanroom Standard:
ISO 8
Passivation Standard:
ASTM A967
Microstructure:
Uniform
Service Life:
25-year Warranty
Maintenance-free Duration:
5-year Offshore
Performance Degradation:
<2% In 3 Years
Dynamic Immersion Test:
2,000-hour Seawater
Product Description
Detailed Specifications & Features
Corrosion-Resistant Compression Spring: Engineered for Extreme Corrosion Resistance in Marine and Chemical Environments
Marine and chemical industries face relentless corrosion challenges, including high-salinity seawater (35,000-50,000 ppm chloride), aggressive chemical vapors (e.g., H₂S, Cl₂), and persistent humidity (>95% RH). Our helical compression springs are engineered to counter these threats through precision design and advanced material science.
Technical Framework
Leveraging SolidWorks 2024 CAD and ANSYS Mechanical FEA, we optimize coil geometry with smooth, crevice-free profiles to minimize corrosive medium retention. Electropolished surfaces (Ra < 0.2μm) eliminate micro-pores, achieving a Pitting Resistance Equivalent Number (PREN) > 40—far exceeding conventional stainless steel standards.
Material Portfolio
- Medical-grade 316L stainless steel (UNS S31603): Withstands 1,000-hour salt spray testing per ASTM B117 with zero visible corrosion, ideal for coastal marine equipment
- Hastelloy C276: Resists 98% sulfuric acid immersion for 500+ hours without degradation, suited for chemical reactor valves
- Duplex 2205 stainless steel: Offers PREN = 45 and a 25-year corrosion warranty for tidal energy generators
- Nickel-plated variants: 10μm thick coating provides 5,000-hour resistance in 5% salt fog environments
Manufacturing Excellence
- ISO 8 cleanroom production to prevent particulate contamination
- Nitrogen-atmosphere heat treatment (1050°C solution annealing) for uniform microstructure
- Passivation per ASTM A967 and ultrasonic cleaning to meet ISO 16232-11 electronic-grade cleanliness standards
Performance Validation
Testing Standards:
- ASTM G48 pitting test: 6% FeCl₃ solution, 72 hours—no pitting observed
- ISO 9227 cyclic salt spray: 1,000 hours with corrosion rate <0.01mm/year
Field Applications
- Offshore oil rig valves (316L springs): 5-year maintenance-free operation in North Sea conditions
- Chemical processing reactors (Hastelloy C276): 3-year service in 85°C concentrated acid with <2% performance degradation
- Coastal tidal generators (Duplex 2205): 2,000-hour dynamic seawater immersion test with no structural failure
Backed by ISO 9001:2015 quality management and a dedicated corrosion engineering team, we offer custom solutions—from material selection to surface coating—tailored to your specific corrosive environment.
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