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Home > Our Products > Quenched and Tempered Steel Plates
Stronger, Safer, Smarter: Why Quenched and Tempered Plates Are the Backbone of Modern Engineering
When your project demands unmatched strength, toughness, and resistance to impact, there’s no room for compromise. Whether you’re building a crane, fabricating a bridge, or manufacturing trailers or defence components — Quenched and Tempered (Q&T) Steel Plates are engineered to perform where ordinary plates fail.
At Hindustan Steel Corporation, we supply Q&T plates that meet global benchmarks like EN 10025-6, ASTM A514, and proprietary brands like Dillimax, Strenx, and JFE-HITEN — available across India and ready for export.
From high-performance S690QL and S960QL to custom-size cutting for OEMs, we offer next-gen structural steel solutions to EPC contractors, heavy machinery OEMs, and fabricators across sectors.
Let’s dive deeper into what makes Q&T steel the right fit for your mission-critical applications.
Quenched and tempered steel is a type of high-strength alloy steel that undergoes two key heat treatments: quenching (rapid cooling in water or oil) and tempering (controlled reheating). This process gives the steel a hard yet tough structure, making it resistant to both brittle failure and wear.
In simple terms, quenching increases the steel’s hardness, while tempering adjusts that hardness to add flexibility — so the plate won’t crack under stress or high loads.
This steel category is ideal for industries that demand durability, weldability, and fatigue strength, especially in dynamic load conditions.
Where Are Quenched and Tempered Plates Used?
From high-rise structural engineering to mobile combat systems, Q&T plates are the go-to solution when performance, safety, and strength matter most. Here’s where these plates are making a difference:
Used for manufacturing booms, buckets, undercarriages, and structural frames in excavators, bulldozers, and loaders
Ideal for chassis, arms, outriggers, and load-bearing beams in concrete pumps and lifting systems.
Used in girders, load decks, wind bracing systems, and cross-beams — offering strength without excess weight.
Manufacturers rely on Q&T plates to meet load requirements while keeping crane designs lighter and more agile.
Used for troop carriers, ballistic covers, and military-grade fabrication due to their impact toughness and weldability.
Lightweight yet high-yield strength makes them ideal for flatbed trailers, tippers, tankers, and truck chassis.
Select grades like ASTM A514 are used in manufacturing industrial boilers and storage tanks requiring pressure integrity
wherever high-yield, low-alloy structural integrity is mission-critical.
Popular Grades of Quenched and Tempered Steel Plates
Q&T plates come in a range of grades designed to balance high yield strength, weldability, and low-temperature toughness. The right grade depends on your application, required mechanical properties, and applicable standards (EN, ASTM, JIS, etc.).
Here’s a breakdown of the most commonly used Q&T plate grades:
Looking for reliable Indian equivalents? Our HIND Q&T plates are available in 690, 890, and 960 grades, custom-cut to your project specs.
Quenched and Tempered Plate Specifications at a Glance
Every Q&T plate we supply is backed by a strict control of mechanical and dimensional properties. These technical parameters help engineers, fabricators, and project managers select the right grade with confidence.
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Energy @ -40°C |
| S690QL | ≥ 690 | 770–940 | ≥ 14 | 30–50 J |
| S890QL | ≥ 890 | 940–1100 | ≥ 10 | 27–45 J |
| S960QL | ≥ 960 | 980–1150 | ≥ 10 | 27–40 J |
| ASTM A514 B | 690–825 | 760–895 | ≥ 18 | 20–30 J |
Custom grades may vary based on client specs or mill origin.
| Property | Range |
| Thickness | 6 mm to 150 mm |
| Width | Up to 3000 mm |
| Length | Up to 12000 mm |
| Cutting Tolerance | ±2 mm (Plasma/Waterjet/Laser) |
| Flatness Tolerance | As per EN 10029 Class N |
| Surface Condition | Mill finish / Shot blasted |
Global Standards Complied by Q&T Plates
When you’re working with demanding projects — be it high-rise cranes, trailers, or pressure vessels — compliance is not optional. Our quenched and tempered plates meet a wide array of international standards, making them suitable for both Indian and global markets.
Global Supply of Quenched and Tempered Plates – Ready for Export
We are proud to be among India’s trusted suppliers of quench and temper steel plates for international buyers, with proven exports across the Middle East, Southeast Asia, Africa, and Europe. Our team handles everything from grade selection, packaging, certifications, to port delivery.
Here’s where we frequently export:
Whether you’re a project manager in Mumbai or a fabricator in Raipur, we deliver cut-to-size Q&T plates to your site, factory, or warehouse. With strong logistics partnerships, we cover every major industrial city in India — ensuring speed, traceability, and material reliability.
Pan-India road transport with GST invoice and e-way bill
Customized cutting & palletized delivery
Local dealer network for urgent supply
MTCs, test reports, and dispatch tracking
Why Engineers & OEMs Trust Hindustan Steel Corporation for Quenched and Tempered Steel Plates
We understand that selecting Q&T plates isn’t just about strength — it’s about timely delivery, grade accuracy, and machining flexibility. At Hindustan Steel Corporation, we go beyond just supplying steel. We offer a complete solution for your project success.
Here’s what makes us a preferred partner for EPCs, OEMs, and industrial buyers across India and abroad:
We stock S690QL, A514, and HIND Q&T grades in-house and also source direct from approved mills.
Get consistent availability, zero grade mismatch, and traceable origin.
Need 10 mm or 100 mm plates pre-cut to 3200 x 12000 mm?
We provide precision cutting, beveling, plasma/laser shapes, ready for fabrication.
Every plate is dispatched with:
You’ve reached the right supplier.
Smart Tips for Buyers of Quenched and Tempered Plates (And Mistakes to Avoid)
When it comes to sourcing quenched and tempered steel, not all plates are created equal. Avoiding a few common missteps can help you save cost, prevent rejections, and ensure project timelines stay on track.
Ensure that S690QL is not confused with S355 or A572 — mismatch can cost your project both money and safety.
Always request original mill test certificates and ultrasonic testing to confirm internal soundness — especially for crane, bridge, or boiler use.
Low carbon equivalent (CE ≤ 0.45) means better weldability. Make sure you confirm this if your fabrication involves field welding.
Share your cutting layout to avoid excess wastage or misfit plates — we help optimize yield for minimal scrap.
Don't just go by grade name — two S690QL plates can behave very differently depending on mill, heat number, and batch.
S890QL ≠ S690QL ≠ A514 — mechanical differences can fail your stress or fatigue requirements.
Always check if your supplier is backed by stock visibility, location, and past client base.
Many suppliers don’t stock 100+ mm plates — lead times can shoot beyond 30–45 days.
Some critical projects require flatness, squareness, and EN 10029 Class N tolerances — confirm specs before committing.
For offshore, mining, or trailer projects, make sure your Q&T plate meets minimum J @ -40°C or -50°C
Whether you’re building a crane in Chennai, fabricating bridges in South Africa, or exporting trailers to the UAE — we’re here to support your Q&T plate requirements from quote to dispatch.
of S690QL, A514, and HIND Q&T grades
+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com
390/392, Ground Floor, Shankar Mansion, S.V.P. Road, Mumbai – 400004, India
To support your project planning, compliance, and procurement process, we offer a complete library of downloadable resources — all verified and aligned to global standards.
📄 Technical Datasheets
📘 Product Brochure
🧪 Welding Guide
📑 Certifications
🔍 Grade Comparison Tool
Use Case-Based Pages for Key Industries
From trailers and cranes to bridges and defense — explore how Q&T plates serve critical sectors.
Compare EN 10025-6, ASTM A514, and HIND Plates
Detailed breakdown of mechanical properties, uses, and availability across grades like S690QL, S960QL, A514, and more
Cutting, Sourcing, and Certification Services
Discover our custom cutting services, compliance support, and manufacturing strength across India.
Supplying to UAE, Africa, Southeast Asia, Europe
Learn how we manage international dispatches with port loading, packaging, and MTC documentation.
Make Smarter Purchasing Decisions
Understand key differences between Q&T grades, their use over normalized plates, and proper cutting/welding methods
Answers to 50+ Buyer & Technical Questions
Covers everything from pricing and thickness to welding, impact properties, and export packaging.
Visit Q&T Plate FAQ Section →
+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com
390/392, Ground Floor, Shankar Mansion, Vanita Vishram Chowk, S.V.P. Road, Mumbai - 400004
+91-9820944724
sales@hindustansteel.com
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