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High-Strength Weathering Resistant Steel for Indian Structural Applications
WR Fe 480 is a high-strength weathering resistant structural steel used in Indian infrastructure and industrial applications where higher yield strength is required along with improved atmospheric corrosion resistance.
It sits above IS 11587 in strength hierarchy and is typically chosen when designers need both corrosion resistance and higher load-carrying capacity, without moving to international standards like EN or ASTM.
WR Fe 480 is an Indian weathering resistant (WR) steel grade characterised by:
• Higher minimum yield strength compared to IS 11587
• Copper-based alloying for atmospheric corrosion resistance
• Suitability for outdoor structural exposure
• Compliance with Indian design and procurement practices
The grade is primarily selected for structural efficiency, not aesthetics.
WR Fe 480 is typically specified when:
• Higher yield strength is required than IS 11587
• Structures are exposed to outdoor atmospheric conditions
• Indian standards are preferred over EN / ASTM
• Designers want to reduce section size while retaining durability
It allows engineers to achieve lighter or more efficient designs compared to lower-strength WR grades.
| Element | Typical Range % |
|---|---|
| Carbon (C) | ≤ 0.16 |
| Copper (Cu) | 0.20 – 0.55 |
| Chromium (Cr) | 0.30 – 1.00 |
| Nickel (Ni) | ≤ 0.65 |
| Phosphorus (P) | ≤ 0.15 |
| Manganese (Mn) | ≤ 1.60 |
Exact limits vary by thickness and mill practice. Always verify MTC.
| Property | Typical Value |
|---|---|
| Yield Strength | ≥ 480 MPa |
| Tensile Strength | 550 – 650 MPa |
| Elongation | ≥ 16% |
WR Fe 480 is selected primarily for its higher yield strength, enabling reduced steel tonnage in structural members.
| Grade | Primary Design Intent |
|---|---|
| IS 11587 WR | General civil & industrial WR applications |
| WR Fe 480 | Higher strength structural WR applications |
| IRSM 41-97 | Railway-specific weathering steel |
👉 Grade choice should be driven by load requirement and governing authority, not corrosion resistance alone.
Sharoff Steel Suppliers can supply WR Fe 480 in:
• Plates
• Sheets
• Structural sections (subject to rolling availability)
• Cut-to-size material
Infrastructure
• Bridges and flyovers (non-railway)
• Heavy outdoor structural members
Industrial
• Equipment support structures
• Outdoor load-bearing frames
Power & EPC
• Exposed plant structures
• Utility and service platforms
WR Fe 480 may not be the preferred choice when:
• Railway specifications apply → IRSM 41-97 is mandated
• IS-code general structures with moderate loads → IS 11587 is sufficient
• International standards are contractually required → EN / ASTM / JIS grades apply
Correct selection balances strength, corrosion resistance, and code compliance.
For WR Fe 480 supply, the following are typically required:
• Mill Test Certificate (MTC)
• Grade and yield strength declaration
• Heat number traceability
• Clear understanding of Indian WR grade hierarchy
• Guidance on choosing between IS 11587, WR Fe 480, and IRSM 41
• Reliable sourcing with traceability
• Support to prevent under- or over-specification
We help customers select the right WR grade for the load, not just the environment.
When should WR Fe 480 be chosen over IS 11587?
When higher yield strength is required for structural efficiency while retaining weathering resistance.
Is WR Fe 480 commonly used in Indian infrastructure projects?
Yes. It is used in bridges, heavy structures, and EPC projects where higher strength WR steel is specified.
WR Fe 480 is a high-strength Indian weathering steel designed for structural efficiency in outdoor environments. Its value lies in combining higher yield strength with atmospheric corrosion resistance, within an Indian standards framework.
At Sharoff Steel Suppliers, WR Fe 480 is supplied with grade clarity and application-driven guidance.