Understanding E350 Grade and Its Use in Structural Steel
IS 2062 E350 is a high tensile structural steel plate under the Indian Standard (BIS), commonly used in fabrication, infrastructure, machinery, and automotive components. The “E” stands for Elastic limit (Yield Strength), and 350 indicates a minimum yield strength of 350 MPa.
This grade is a popular choice due to its balance of strength, formability, and weldability
What is the Yield Strength of E350?
The minimum yield strength of IS 2062 E350 is 350 MPa (Mega Pascals), which is equivalent to 50,763 psi.
✅ Yield strength is the stress at which a material begins to deform plastically. For E350, this means it can handle up to 350 MPa without permanent deformation
Where is IS 2062 E350 Used?
E350 grade is used in applications that require moderate to high strength and structural durability, such as:
- Construction beams and heavy structures
- Offshore and crane components
- Railway wagons and pressure vessels
- Equipment frames, trailers, bridges
Mechanical Properties of IS 2062 E350 (BR / B0 / C)
| Property | IS 2062 E350 (Min. Values) |
|---|---|
| Yield Strength (MPa) | 350 MPa (up to 20mm thick) |
| Tensile Strength | 490–630 MPa |
| Elongation (%) | ≥23% |
| Charpy Impact Test | Optional / 27J @ 0°C / -20°C |
Note: Yield strength may reduce slightly with higher thickness (>20mm)
IS 2062 E350 Variants & Standards
E350 is available in subgrades:
- E350BR – As rolled
- E350B0 – Impact tested at 0°C
- E350C – Impact tested at -20°C (Charpy 27J)
All variants conform to Bureau of Indian Standards (BIS) under IS 2062:2011.
Thickness Range and Plate Dimensions
| Thickness Range | 5 mm to 150 mm |
|---|---|
| Width | 1250 / 1500 / 2000 / 2500 mm |
| Length | Up to 12000 mm |
| Finish | HR / Shot Blasted / Primer Coated |
Plates are available in cut-to-size format and customized lengths as per project needs.
Heat Treatment & Yield Performance
- E350BR: As-rolled, moderate yield performance
- E350B0 / C: Normalized / Q&T for improved toughness
- These variants offer consistent yield strength across temperatures and load cycles
Fabrication, Bending & Welding of E350
E350 can be plasma/laser cut, CNC profiled, and easily bent or rolled for fabrication. It offers:
- Good weldability with low hydrogen electrodes
- Machinability with standard tools
- Suitable for submerged arc welding (SAW) and MIG
Why Choose E350 Over Mild Steel?
| Feature | E250 (Mild Steel) | E350 (High Tensile) |
|---|---|---|
| Yield Strength | 250 MPa | 350 MPa ✅ |
| Weight Optimization | ❌ | ✅ |
| Structural Safety | ❌ | ✅ |
| Export Ready | Limited | Moderate to High |
If your design requires lighter structures with higher strength, E350 is a better fit than E250.
S355J2 vs E350: Yield Strength Comparison
| Grade | Yield Strength (MPa) | Region |
|---|---|---|
| E350 (IS 2062) | 350 MPa | India |
| S355J2 | 355 MPa | Europe (EN) |
Both grades offer similar mechanical strength, with S355J2 offering better low-temp impact properties
E350 Plate Export Markets & Packaging
HSC supplies E350 plates to:
- UAE, Saudi Arabia, Qatar, Kenya, Bangladesh
- With IS 2062 certification and 3.1 mill TC
- Packed with HDPE wrapping, edge protection, and seaworthy pallets
Buyer Guide: How to Ensure You’re Getting 350 MPa Yield?
- Always ask for Mill Test Certificate (MTC) showing yield value
- Request E350B0 or E350C for tested impact performance
- Use only from BIS-approved or PED-certified mills for quality compliance
Certifications Available with E350 Plates
- IS 2062:2011 compliance
- EN 10204 3.1 / 3.2 Test Certificates
- IBR approval (on request)
- PED / CE compliance (for exports)
Need Help Selecting E350 vs Other Grades?
Our application engineers help buyers finalize between:
- E250 vs E350 vs E450
- IS 2062 vs EN 10025-2
- With expert advice on thickness, welding, and yield specs
📩 Contact us now for pricing, mill availability, or third-party inspection..
15 SEO-AEO-LEO FAQs – E350 Yield Strength
Does yield strength vary with thickness?
Yes. For thicker plates (>40 mm), it may be slightly lower. Always verify via MTC.
What is the difference between E350BR and E350C?
Both have 350 MPa yield strength, but E350C is impact tested at -20°C.
Is E350 same as S355J2?
They are similar in strength but differ in standards. S355J2 is an EN-grade with mandatory impact testing.
Can E350 be used for offshore structures?
Yes, especially E350C variant for cold-weather and marine use
Is 350 MPa high strength?
Yes, it's higher than mild steel (E250) and suited for heavy-duty applications.
What is tensile strength of E350?
It ranges from 490 to 630 MPa, depending on the thickness and variant.
Can E350 be bent and welded easily?
Yes, it has good cold formability and weldability.
Which welding rod is best for E350?
Use low hydrogen electrodes like E7018 or SAW wire for heavy welds.
Is E350 available in primer finish?
Yes, on request – with blasted + primer-coated finish for immediate painting.
What’s the density of E350?
Approx. 7.85 g/cm³, same as other carbon steels.
Does HSC offer custom cutting for E350?
Yes – plasma, oxyfuel, and waterjet cutting available.
What tests come with E350?
Chemical, mechanical, ultrasonic, and impact testing on request.
Is 350 MPa enough for crane boom?
Yes, especially when weight-to-strength optimization is needed.
Where to buy IS 2062 E350 plates in India?
From Hindustan Steel Corporation – mill-ready stock, export packaging, and cut-to-size supply.
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Contact Hindustan Steel Corporation today
- IS 2062 E350 / E450
- S355J2 / S690QL / S890QL
- Hiten 550 / 600
- SAILMA series
- ASTM A572 Gr 50 / A573
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