- sales@hindustansteel.com
- 390/392, Ground Floor, Shankar Mansion, Vanita Vishram Chowk, S.V.P. Road, Mumbai - 400004
Phone
+91-9820944724
+91-9820944724
Home > Our Products > Quenched and Tempered Steel Plates > Applications > Quenched & Tempered Steel Plates for Heavy Machinery
Heavy machinery components operate under intense dynamic loads, cyclic stress, and harsh environments — which demand superior toughness and high yield strength. That’s where Quenched and Tempered (Q&T) steel plates come in.
These plates undergo a specialized heat treatment process — first quenched for hardness, then tempered for ductility — resulting in exceptional strength-to-weight ratio and long-lasting structural reliability.
At Hindustan Steel Corporation, we supply a full range of Q&T plates (up to 1100 MPa yield strength) for use in:
Whether you need S690QL, S890QL, A514, HITEN, or Strenx — we deliver what your machine builds demand.
Q&T plates are used in high-impact, fatigue-heavy, and welded components in the following equipment:
Earthmoving & Mining:
Cranes & Material Handling:
Infrastructure Machinery:
Q&T plates allow manufacturers to reduce structural weight, increase payload capacity, and extend fatigue life in rough operating zones.
We supply various grades depending on machinery design requirements. Common properties across machinery-grade Q&T plates include:
| Property | Typical Range |
|---|---|
| Yield Strength | 690 MPa – 1100 MPa |
| Tensile Strength | 770 – 1300 MPa |
| Elongation | 10–16% |
| Impact Resistance | ≥47J at -20°C to -60°C |
| Thickness Range | 6 mm to 150 mm |
Consistent performance across thickness and temperature extremes.
We recommend the following grades based on usage:
| Application | Recommended Q&T Grades |
|---|---|
| Load-bearing chassis | S690QL, A514-B, Strenx 700 |
| Boom arms & structural | S890QL, HITEN 780LE, Dillimax 690T |
| High impact zones | Dillidur 500, HIND HARD 500, A517 |
| Lightweight components | Strenx 960 / HITEN 980LE |
All grades supplied with full traceability, welding compatibility, and impact-tested certifications.
Our Q&T plates conform to global engineering and mechanical standards across geographies:
| Standard | Example Grades | Application |
|---|---|---|
| EN 10025-6 | S690QL / S890QL / S960QL | Europe/India: General and load frames |
| ASTM A514 / A517 | Grade B, E, Q, F | USA: Structural, pressure vessels |
| JFE HITEN Series | 780LE, 980LE | Japan: Crane and chassis applications |
| Dillinger Plates | Dillimax 690T / 890T / 965T | Germany: Bridges and booms |
| Strenx Series | 700MC, 900, 1100 | Global: Lightweight, fatigue-critical |
We assist in selecting the right grade based on your country code, welding procedure, and application performance needs.
We maintain large inventories and also import plates to custom requirements.
Common Stock Sizes:
Fabrication Support:
We support clients with ready-to-assemble machine components, saving time and reducing fabrication error.
Despite their strength, our Q&T plates maintain excellent process compatibility:
Welding Guidelines:
Formability:
Our technical support team can guide your fabrication crew with bend charts and WPS inputs.
All Q&T plates for machinery are supplied with:
We also offer third-party inspection via SGS, TUV, Lloyd’s, or client-nominated agencies.
Hindustan Steel Corporation is one of India’s most reliable stockist-supplier-processors of high-performance Q&T plates with:
From bridge-building to dump trucks, our Q&T plates form the backbone of engineering that moves the world.
Based on grade availability or project feasibility, we offer the following alternatives:
| Required Feature | Recommended Grade |
|---|---|
| Lightweight with high fatigue | Strenx 900 / HITEN 980LE |
| Extreme strength and weldability | Dillimax 890T / S960QL |
| Cost-effective load plates | S690QL / A514 Grade B |
| Shock resistance + wear combo | Dillidur 500 / HIND HARD 500 |
Let us help match the plate to your machine’s load map, impact zone, and weight balance.
Our Q&T plates are exported to OEMs, project contractors, and heavy fabrication companies in:
Regular Export Regions:
Export Services Include:
Clients rely on us for quick clearance, global documentation, and project-ready steel.
Ask yourself:
Based on your answers, we recommend the best-fit plate, ensuring strength, fabrication ease, and lifecycle ROI.
We guide you on:
We understand that heavy machinery projects demand full traceability and test compliance.
Supplied Documents Include:
Every plate is traceable by heat number and packed for project-level audit trails.
S690QL, HITEN 780LE, or Dillimax 690T are commonly used for booms due to their strength and bendability.
Yes, especially S690QL, A514, and HITEN grades — when proper preheat and low-hydrogen electrodes are used.
Plates with 890–980 MPa yield strength (like S890QL or HITEN 980LE) are ideal for telescopic or boom arm sections.
Yes, they reduce dead weight while withstanding cyclic loads and stress from uneven terrains.
Strenx 900, Dillimax 965T, and HITEN 980LE offer superior fatigue endurance for repetitive load zones.
A514 is an ASTM-grade structural steel; S690QL is EN-standard. Both offer high yield, but differ in welding and documentation preferences.
We supply up to 150 mm depending on the grade and project requirement.
Yes, all crane-grade Q&T plates are UT-tested as per EN 10160 or ASTM A578.
Yes, grades like HITEN and S690QL have excellent bendability for structural shapes.
Plates are packed in steel frames or on wooden skids with proper tagging and documentation.
Yes. We offer red oxide or zinc primer coating for project readiness and corrosion resistance.
Standard thicknesses are dispatched in 2–3 days; custom imports take 4–6 weeks.
Yes. We provide CE markings and 3.1 / 3.2 certificates based on the order.
Absolutely. We offer CNC cutting, rolling, and pre-weld prep services as per your drawing.
If you build or repair cranes, excavators, dumpers, loaders, or TBMs, you need plates that don’t fail when it matters.
Contact Hindustan Steel Corporation to get:
Dispatch Location: Taloja MIDC, Navi Mumbai, India
+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