Stainless Steel Gas Springs (304 & 316) | Custom Gas Struts Manufacturer
DK specializes in stainless steel gas springs, supplying custom SS316 & SS304 gas struts, gas shocks, and marine hardware for OEMs and bulk buyers. Configurable stroke, force ratings (50N-2500N), and end fittings, with 96-244 hour salt spray (ASTM B117) corrosion resistance for marine, food-grade, and medical applications.
Custom Stainless Steel Gas Springs & Struts Manufacturing
A Stainless Steel Gas Spring is a premium motion control component whose cylinder and piston rod are made of corrosion-resistant alloys (AISI 304 or 316L); seals, guides and lubricant are specified separately for each application. Unlike standard steel springs that rely on paint or coating, the stainless surface forms a passive oxide layer that can self-repair if damaged, improving resistance to rust, harsh chemicals and saltwater.
They are the critical choice where hygiene, aesthetics, and durability are non-negotiable requirements.
Why It Matters:
- High corrosion resistance: AISI 304/316L cylinders verified in SGS salt spray of 96–244 hours (ASTM B117 / ISO 9227); the result depends on alloy, finish and service conditions and does not equal actual service life.
- Hygienic: smooth surface helps prevent bacteria growth; food-contact configurations (e.g. NSF-H1 lubricant) are available on request to support FDA / EC 1935/2004 compliance.
- Low magnetic permeability: austenitic AISI 304/316L is essentially non-magnetic (slight permeability may appear after cold working); suitable for sensitive electronic environments - it is not a substitute for an MRI-safety assessment.
Material Composition
Why Source SS316 Marine Gas Shocks from DK?
Choosing the right alloy is critical for cost-efficiency and longevity. Here is the definitive breakdown based on high-frequency customer inquiries.
| Feature | SS304 (Standard) | SS316 (Premium/Marine) |
|---|---|---|
| Corrosion Resistance | High (Resists oxidation & fresh water) | Superior (Resists chlorides & salt water) |
| Best Application | Food Processing, Medical Furniture, Outdoor | Marine (Yachts), Chemical Plants, Coastal Areas |
| Cost Factor | $$ (Cost-Effective) | $$$ (Higher Investment ~30-40% more) |
| Magnetic Permeability | Low | Very Low (Near Zero) |
| Salt Spray Test | ~96–144 hours (standard configuration) | 96–244 hours (SGS, by finish) |
Technical Specifications & B2B Customization Options
Industry Applications
Marine & Offshore
Hatches, engine covers, and storage lockers on yachts. Must withstand saltwater mist and humid environments without pitting.
Food & Beverage
Production line guards and counterweight assists. Requires FDA-compliant materials and easy wash-down capabilities.
Medical & Pharma
Hospital beds, analytical instruments, and clean rooms. Needs sterile surfaces and non-magnetic properties.
Engineered SS316 Marine Gas Springs for Extreme Saltwater Environments
Standard & Custom Stainless Steel Gas Spring Specifications
Custom Stroke Lengths, Force Range (50N-2500N), & End Fittings
All DK-SS316 series cylinders are ASTM B117 / ISO 9227 salt spray tested for 96–244 hours, depending on finish and conditions. The salt spray result does not equal actual service life.
| Model / Series | Material | Rod / Tube Dia. | Stroke Range | Force Range | Available End Fittings |
|---|---|---|---|---|---|
| DK-SS316-M8 | 316 Stainless Steel | 8mm / 18mm | 50mm - 300mm | 100N - 800N | Ball Sockets, Eyelets, Clevises |
| DK-SS316-M10 | 316 Stainless Steel | 10mm / 22mm | 100mm - 500mm | 200N - 1200N | Stainless Ball Joints, Angle Joints |
| DK-SS304-M8 | 304 Stainless Steel | 8mm / 18mm | 50mm - 300mm | 100N - 750N | Threaded Rods, Flat Eyelets |
Preset Configurations by Application
SS316 Marine Gas Springs (8/18mm, 10/22mm)
Optimized for boat hatches, saltwater enclosure doors, and deck boxes. Features 96-244 hour salt spray resistance (ASTM B117).
Heavy-Duty Stainless Steel Struts (14/28mm, up to 2500N)
Designed for industrial machine guards, food-grade processing equipment, and heavy access covers.
Mini Stainless Steel Gas Shocks (6/15mm)
Precision motion control for medical devices, electronic display arms, and compact marine hatches.
Download 2D/3D CAD Models (STEP, IGES) for Marine Gas Springs
Our engineering office provides custom gas spring CAD drawings and 3D STEP files within 24 hours to integrate into your OEM equipment designs.
Cross-Reference for Marine Gas Struts
Looking for an alternative supplier? We provide bulk Attwood / Suspa stainless gas spring replacements matched to your existing dimensions and force specs.
Frequently Asked Questions
Ryan Chen
Senior Project Manager & Industrial Hardware Specialist
“Dedicated to helping global distributors eliminate after-sales risks through precision-calibrated hardware solutions.”