Fastener Material Comparison Guide
Compare mechanical properties, corrosion resistance, and best applications for common fastener materials.
Selecting the right fastener material depends on the application environment, required strength, corrosion exposure, and budget. Below is a side-by-side comparison of the most commonly used fastener materials in Indian industry.
| Property | Mild Steel (MS) | SS 304 | SS 316 | EN8 | High Tensile (Gr 8.8) |
|---|---|---|---|---|---|
| Tensile Strength (MPa) | 410-550 | 515-620 | 485-620 | 650-800 | 800-1000 |
| Yield Strength (MPa) | 250-350 | 205-310 | 170-290 | 450-550 | 640-900 |
| Hardness | 120-160 HB | 150-200 HB | 150-200 HB | 200-280 HB | 22-32 HRC |
| Corrosion Resistance | Low | Very Good | Excellent | Low | Low-Medium |
| Magnetic | Yes | Slightly | No | Yes | Yes |
| Max Service Temp. | 300°C | 800°C | 800°C | 400°C | 300°C |
| Typical Applications | General construction, agriculture, non-critical joints | Food processing, marine fittings, chemical exposure | Marine, pharmaceutical, high-corrosion environments | Automotive, machinery shafts, high-wear parts | Structural steel, automotive, high-load joints |
| Relative Cost | Low (1x) | Medium (3-4x) | High (4-5x) | Medium (2-3x) | Medium (2x) |
Material Selection Tips
- —For outdoor or wet environments, prefer SS 304 or SS 316 over mild steel
- —Zinc plating on mild steel provides moderate corrosion protection at lower cost
- —EN8 is ideal for shafts, studs, and components requiring high wear resistance
- —High tensile (Grade 8.8) is the standard for structural bolting per IS 4000
- —Contact our team for guidance on the best material for your specific application
Disclaimer: Values provided in this reference are approximate and intended for general guidance only. Actual specifications may vary based on manufacturing tolerances, surface conditions, and environmental factors. Always consult relevant IS/ISO/ASTM standards and project engineering specifications for critical applications. Pankaj Fasteners Pvt. Ltd. assumes no liability for the use of these reference values in design or construction.
Need Custom Specifications?
Our engineering team can provide detailed technical data, material test certificates, and custom sizing for your specific requirements.