IS 2062:1999 specifies requirements for hot-rolled structural steel used in general engineering and construction. This guide compares the three grades (A, B, C) and their variants:
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Chemical composition limits
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Mechanical properties
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Impact test requirements
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Recommended applications
Steelmet Industries supplies all IS 2062:1999 grades as:
✅ Steel plates (3-100mm thickness)
✅ Structural sections (beams, channels, angles)
✅ Round/square/flat bars
Grade Classification System
| Grade | Designation | Key Characteristics | End Marking Color |
|---|---|---|---|
| A | Fe 410W A | Basic structural grade, no impact test | Green |
| B | Fe 410W B | Improved purity, room temp impact test | Grey |
| C | Fe 410W C | Low-temp applications (-20°C impact) | Orange |
Copper-bearing variants (e.g., Fe 410Cu-WA) are marked with additional white band.
Key Comparison Tables
1. Chemical Composition
| Element | Grade A | Grade B | Grade C |
|---|---|---|---|
| C (max) | 0.23 | 0.22 | 0.20 |
| Mn (max) | 1.50 | 1.50 | 1.50 |
| S (max) | 0.050 | 0.045 | 0.040 |
| P (max) | 0.050 | 0.045 | 0.040 |
| CE (max) | 0.42 | 0.41 | 0.39 |
Note: Grade C has strictest impurity controls
2. Mechanical Properties
| Property | Grade A | Grade B | Grade C |
|---|---|---|---|
| Tensile (MPa) | 410 | 410 | 410 |
| Yield (MPa) | 250 | 250 | 250 |
| Elongation (%) | 23 | 23 | 23 |
| Impact Test | Not required | 27J @ RT | 27J @ -20°C |
Applications Guide
| Grade | Best For | Not Recommended For |
|---|---|---|
| A | Non-critical structures, roofing | Low-temperature/welded critical parts |
| B | Bridges, general construction | Sub-zero environments |
| C | Offshore platforms, cryogenic | Cost-sensitive projects |
Special Notes:
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Grade C plates >12mm must be normalized/controlled cooled
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Copper-bearing grades (Cu suffix) offer better corrosion resistance
Why Choose Steelmet Industries?
We provide:
✔ All three grades (A/B/C) with MTC certification
✔ Custom processing (cutting, drilling, bending)
✔ Just-in-time delivery across India
✔ Technical support for grade selection
Request samples of any IS 2062:1999 grade for testing!
FAQ Section
Q: Can Grade A be used for welded structures?
A: Yes, but Grade C is recommended for critical welds due to its guaranteed -20°C impact toughness.
Q: Difference between Fe 410W B and Fe 410Cu-WB?
A: The Cu variant contains 0.20-0.35% copper for improved atmospheric corrosion resistance.
Conclusion
Understanding IS 2062:1999 grade differences ensures optimal material selection for structural integrity. Steelmet Industries stocks all grades with proper color-coding as per standard – contact us today for project-specific recommendations.
