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Home > Our Products > Quenched and Tempered Steel Plates > Grade / Specification > WELTEN 780E / 900E Plates
WELTEN 780E and WELTEN 900E are advanced quenched and tempered high-strength steel plates developed by Nippon Steel & Sumitomo Metal Corporation, Japan. With minimum yield strengths of 780 MPa and 900 MPa respectively, these plates are ideal for weight-saving, fatigue-resisting, and impact-critical structures.
Used widely in cranes, high-load trailers, marine components, bridges, mining machinery, and defense structures, WELTEN plates are known for their toughness at sub-zero temperatures, superior flatness, and weldability — all while reducing the steel weight in your project without compromising strength.
At Hindustan Steel Corporation, we offer ready stock and mill imports of WELTEN 780E / 900E plates with custom size processing, full traceability, and global delivery backed by strict Japanese quality.
Due to their ultra-high yield strength and impact-tested low-temp performance, WELTEN plates are used in:
If your goal is more strength with less steel, WELTEN 780E / 900E is a smart upgrade from standard Q&T plates.
These grades are designed to deliver uniform mechanical performance with reliability across varying plate thicknesses
| Property | WELTEN 780E | WELTEN 900E |
|---|---|---|
| Yield Strength (min) | 780 MPa | 900 MPa |
| Tensile Strength | 820–950 MPa | 940–1100 MPa |
| Elongation (≥) | 14–16% | 13–15% |
| Charpy Impact Test | 47J at –40°C | 47J at –40°C |
| Thickness Range | 6 – 100 mm | 6 – 100 mm |
Designed to maintain strength under fatigue, impact, and subzero operating conditions.
WELTEN steel plates are produced using clean steel technology, ensuring low impurity content, excellent weldability, and low CE (carbon equivalent).
| Element | Typical % (Max) |
|---|---|
| Carbon (C) | 0.10–0.18 |
| Manganese (Mn) | ≤ 1.60 |
| Silicon (Si) | ≤ 0.55 |
| Chromium (Cr) | ≤ 0.80 |
| Nickel (Ni) | ≤ 1.40 |
| Molybdenum (Mo) | ≤ 0.50 |
| Sulfur (S) | ≤ 0.005 |
| Phosphorus (P) | ≤ 0.015 |
| CE (Carbon Eq.) | ≤ 0.47 |
Consistent welding performance, fatigue strength, and excellent post-processing behavior.
While WELTEN 780E / 900E are proprietary grades from Nippon Steel, they are comparable to leading international high-strength structural steel standards.
| Standard | Comparable Grade |
|---|---|
| EN 10025-6 | S690QL, S890QL, S960QL |
| ASTM | A514 Grade F, A517 F |
| JFE | HITEN 780LE / 900LE |
| SSAB | Strenx 700 / 900 |
| Dillinger | Dillimax 690T / 890T |
When transitioning from these grades, WELTEN offers better impact performance, tighter tolerances, and superior Japanese finish quality.
We stock and supply WELTEN 780E and 900E plates in industry-preferred sizes and custom-processed formats.
Standard Stock:
Custom Processing:
Ready stock in Mumbai & Taloja, with mill order options for large volume buyers.
WELTEN plates are known for clean grain structure, enabling smooth downstream processing.
Welding:
Forming & Machining:
Allows for faster assembly, better finish, and fewer reworks in production.
We offer additional services to enhance usability and export-readiness.
All documentation is heat-wise traceable and aligned with international project needs
Dillimax plates are engineered for ease of fabrication, even at high strength.
Cutting:
Forming:
Welding:
We assist fabricators with WPS, PQR, and welding consultancy on request.
We are among India’s trusted suppliers of Japanese-grade quenched and tempered steel plates — with technical expertise, logistics support, and end-to-end documentation.
Our Strengths:
“With HSC, you don’t just get plates — you get a precision partner.”
In case of urgent lead times or design code flexibility, you may consider:
| Alternate Grade | Benefit |
|---|---|
| S690QL / S890QL | EN-compliant, widely stocked in India |
| Strenx 700 / 900 | Lightweight, laser-cuttable, SSAB |
| Dillimax 690T / 890T | German quality with precise flatness |
| ASTM A514 / A517 | U.S.-based Q&T structural plates |
| JFE HITEN 780LE | Another Japanese high-strength plate |
Our team will recommend the right grade based on project code, yield strength, and impact requirement.
Hindustan Steel Corporation actively exports WELTEN 780E / 900E plates and custom-processed parts to engineering companies, crane manufacturers, and structural OEMs across:
Export Destinations:
Packaging: Seaworthy with mill certifications, UT, impact, and chemical test reports
Ports: JNPT, Mundra, Nhava Sheva – shipment by container or breakbulk
Documentation: EN 10204 3.1/3.2, IRN, CoO, Form A, CE/ISO if required
Whether you need single sheets or full project tons, we deliver precision plates globally.
Choosing between WELTEN 780E and WELTEN 900E depends on:
| Parameter | WELTEN 780E | WELTEN 900E |
|---|---|---|
| Yield Strength | 780 MPa | 900 MPa |
| Toughness @ low temp | Excellent | Excellent |
| Machinability | Easier | Slightly harder |
| Design Codes Compatibility | S690QL / A514 equivalent | S890QL / A517 F equivalent |
| Applications | Chassis, booms, marine parts | Cranes, load arms, bridges |
Still unsure? Our team can recommend the best grade based on:
We supply WELTEN 780E / 900E plates with complete mill and third-party test certificates.
Supplied With:
Need SGS, Lloyds, or BV verification? We coordinate on your behalf.
WELTEN 900E has higher yield strength (900 MPa) than 780E (780 MPa), making it suitable for even more demanding structural loads.
Yes, in many cases WELTEN 900E offers tighter tolerances and better low-temperature toughness compared to generic S890QL.
WELTEN 780E and 900E are manufactured by Nippon Steel & Sumitomo Metal Corporation (Japan).
Yes, it offers excellent weldability using low hydrogen electrodes and is compatible with MAG, MIG, and SAW welding.
It includes low carbon, manganese, chromium, nickel, and molybdenum for strength, toughness, and weldability.
Yes, due to their consistent flatness and clean surface, they are ideal for laser, plasma, and waterjet cutting.
Yes, Hindustan Steel Corporation offers cut-to-size and CNC profile options for WELTEN plates.
MTCs per EN 10204 3.1 or 3.2, UT, impact test, chemical & mechanical test reports are supplied.
You can source them from Hindustan Steel Corporation – a trusted supplier and exporter of Q&T steels.
We support orders starting from 1 plate to full container loads with proper documentation.
Yes, it’s ideal for lattice booms, outriggers, and high-load components due to its yield strength and fatigue resistance.
Yes, its toughness, corrosion resistance, and fatigue strength make it suitable for marine structural components.
Yes, we offer shot blasting and primer coating options for export-readiness.
Yes, we coordinate with SGS, Lloyds, BV, or any TPI agency as required for project approvals.
Ready to build stronger, lighter, smarter?
Contact Hindustan Steel Corporation today for:
Fabricator support for welding/forming guidelines
Dispatch from: Taloja MIDC, Navi Mumbai
+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com
390/392, Ground Floor, Shankar Mansion, S.V.P. Road, Mumbai – 400004, India
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+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com