Wire Rope SS304 vs SS316
Wire Rope SS304 vs SS316 – A Complete Guide with Lifting Load Chart
Stainless steel wire ropes are essential in industries requiring strength, flexibility, and corrosion resistance. SS304 and SS316 are the two most common types of stainless steel wire ropes, each with its unique properties suited for different environments. Whether you need a wire rope for marine use, lifting equipment, or general engineering, understanding the differences between SS304 and SS316 is crucial.
In this blog, we’ll explore the characteristics, usage, and types of SS304 and SS316 wire ropes, along with a detailed lifting load chart covering wire sizes from 1mm onwards. We’ll also discuss different load conditions and angles to help you choose the best option for your application.
Characteristics of SS304 vs SS316 Wire Rope
SS304 Wire Rope: SS304 is the most commonly used stainless steel wire rope. It offers excellent strength and moderate corrosion resistance, making it ideal for indoor and dry environments. It’s also more affordable than SS316.
SS316 Wire Rope: SS316 contains molybdenum, which enhances its corrosion resistance, especially against saltwater and chemical exposure. It’s ideal for harsh environments such as marine and coastal areas or industries with exposure to chemicals.
Lifting Load Chart for Wire Rope SS304 vs SS316
Below is a table that provides the lifting load capacities for SS304 and SS316 wire ropes based on different sizes (1mm to 30mm). Please note that these values are based on general conditions; specific applications may vary depending on usage and safety factors.
| Wire Rope Size (mm) | SS304 (Breaking Load – kg) | SS316 (Breaking Load – kg) | Lifting Load (0° – kg) | Lifting Load (45° – kg) | Lifting Load (60° – kg) |
|---|---|---|---|---|---|
| 1mm | 90 | 85 | 22.5 | 16 | 11.25 |
| 2mm | 160 | 150 | 40 | 30 | 20 |
| 3mm | 380 | 350 | 95 | 71 | 47.5 |
| 4mm | 680 | 650 | 170 | 127.5 | 85 |
| 5mm | 1000 | 960 | 250 | 187.5 | 125 |
| 6mm | 1440 | 1380 | 360 | 270 | 180 |
| 8mm | 2560 | 2440 | 640 | 480 | 320 |
| 10mm | 4000 | 3800 | 1000 | 750 | 500 |
| 12mm | 5760 | 5440 | 1440 | 1080 | 720 |
| 16mm | 10240 | 9600 | 2560 | 1920 | 1280 |
| 20mm | 16000 | 15000 | 4000 | 3000 | 2000 |
| 24mm | 23040 | 21760 | 5760 | 4320 | 2880 |
| 30mm | 36160 | 34080 | 9040 | 6780 | 4520 |
Types of Wire Rope SS304 vs SS316 and their applications
1. General Engineering Wire Rope (SS304)
Construction: 6×19 or 6×37 with a fiber or steel core.
Applications: Used in general engineering, lifting, rigging, and pulling tasks in construction and transportation.
Purpose: Ideal for basic operations where moderate corrosion resistance is sufficient.
2. Marine Grade Wire Rope (SS316)
Construction: 7×19, designed to resist saltwater and harsh chemicals.
Applications: Perfect for marine environments, boating, and coastal installations.
Purpose: Provides high corrosion resistance, especially in salty or chemical-exposed conditions.
3. Elevator Wire Rope
Construction: 8×19 or 6×19 with a steel core for flexibility and strength.
Applications: Used in elevators, lifts, and hoisting systems for vertical motion.
Purpose: Ensures smooth and safe lifting in both indoor and outdoor settings.
4. Haulage Wire Rope (SS304/SS316)
Construction: 6×36 or 6×41, with a steel core for enhanced load capacity.
Applications: Used in mining, forestry, and industrial sectors for dragging heavy loads.
Purpose: Built to withstand high tension and continuous pulling, ideal for haulage operations.
5. Crane Wire Rope (Hydra Crane)
Construction: 6×25 with a steel core for added strength.
Applications: Used in cranes for heavy lifting in construction sites and industrial areas.
Purpose: Designed to handle immense loads while maintaining flexibility for smooth operation.
6. Gym Wire Rope (SS304)
Construction: 7×19 with a steel core for durability and smooth movement.
Applications: Commonly used in gym machines for repetitive motion and resistance training.
Purpose: Lightweight yet strong, providing flexibility and resistance to wear and tear.
7. PVC Coated Wire Rope (SS316)
Construction: 7×7 or 7×19, with a PVC coating for extra protection.
Applications: Outdoor uses like zip lines, cable railings, and safety cables in harsh environments.
Purpose: The PVC coating offers additional resistance to moisture and abrasion, extending the lifespan of the rope.
Different Load Conditions and Angles of Wire Rope SS304 vs SS316
- 0° (Vertical Lift): The most efficient lifting condition where the entire load is supported directly by the wire rope.
- 45° (Angle Lift): Reduced lifting capacity as the angle increases; the load is spread across the rope, putting additional stress on the strands.
- 60° (Wider Angle Lift): A significant reduction in lifting capacity, as the wide angle creates more tension on the rope.
Conclusion of Wire Rope SS304 vs SS316
Whether you choose SS304 or SS316 wire rope depends on the environment and specific requirements of your task. SS304 is excellent for indoor and general engineering use, while SS316 is the go-to choice for marine and chemical environments. Understanding the construction, load capacity, and applications will help you make an informed decision.
For high-quality stainless steel wire ropes, Modi Lifting Solutions offers a wide range to suit your needs. From construction projects to marine applications, we have the perfect rope for every job.
Relevant Images:
- Cross-sectional views of SS304 and SS316 wire ropes.
- Wire ropes used in marine and industrial environments.
Need Help in Buying Decision? Call us on 7015580851 and we are here to suggest you which type of Wire Rope will go best for your work.