Tensile Structure Steel E450 Plate
IS 2062 High Strength Structural Steel Grade
1. What is E450 Steel?
E450 is a high-strength structural steel grade under IS 2062 (Indian Standard). The “E” stands for elastic modulus category (structural quality), and 450 indicates the minimum yield strength of 450 MPa. It is stronger than E250 & E350, making it ideal for heavy load-bearing structures.
2. Mechanical Properties of E450
| Property | Value |
|---|---|
| Yield Strength | ≥ 450 MPa |
| Tensile Strength | 570 – 720 MPa |
| Elongation | ~15–20% (depending on thickness) |
3. Types / Quality Grades
- E450 A – Basic quality
- E450 B – Semi-killed steel
- E450 C – Killed steel, excellent weldability
- E450 BR / BO / Cu – Variants with bendability, impact resistance, or copper for corrosion resistance
4. Chemical Composition (Typical)
| Element | Max % |
|---|---|
| Carbon (C) | 0.20% |
| Manganese (Mn) | 1.65% |
| Phosphorus (P) | 0.045% |
| Sulphur (S) | 0.045% |
| Silicon (Si) | 0.40% |
Note: May include micro-alloying elements like Nb, V, Ti for strength.
5. Key Features
- High yield and tensile strength (stronger than E250/E350)
- Superior weldability and formability
- High toughness for heavy structural use
- Good resistance to wear and tear
- Suitable for cold bending & fabrication
6. Applications
- Heavy structural engineering (bridges, flyovers, metro projects)
- High-rise buildings & tensile structures
- Construction machinery & industrial equipment
- Shipbuilding & offshore structures
- Railway wagons, cranes, and earthmoving machinery
- Storage tanks & pressure vessels