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S690QL High Strength Steel

S690QL is a quenched and tempered high yield strength structural steel produced in compliance with EN 10025-6.

Min Yield Strength 690 MPa
Weight Saving Potential
High Payload Capacity
Excellent Low-Temp Toughness

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Product Overview

**What is S690QL? (Quick Answer):** S690QL is a high-yield quenched and tempered structural steel grade. With a minimum yield strength of 690 MPa, it allows engineers to design structures that are up to 30% lighter than those made with standard mild steel without sacrificing load-bearing capacity.

As an authorized stockist in India, Convergence Steel supplies certified S690QL structural steel. S690QL is manufactured in strict compliance with the European standard EN 10025-6 [1]. The designation 'S' stands for Structural Steel, '690' indicates a minimum yield strength of 690 MPa, 'Q' refers to the Quenched & Tempered delivery condition, and 'L' signifies that the steel has been impact-tested at -40°C.

The primary advantage of using S690QL is its exceptional strength-to-weight ratio. *"Adopting S690QL in heavy transport manufacturing routinely results in a 15-20% increase in payload efficiency, drastically reducing fuel consumption over the vehicle's lifespan."* — Structural Steel Applications Review [2].

Convergence Steel supplies S690QL with complete EN 10204 3.1 / 3.2 certification and traceability.

Typical Applications

Mobile Cranes
Heavy Transport Trailers
Mining Roof Supports
Lifting Equipment
Offshore Structures

Technical Specifications

Chemical Composition (Max %)

CSiMnPSCrNiMoB
0.200.801.700.0200.0101.502.00.700.005

Mechanical Properties (EN 10025-6)

ThicknessYield Strength (MPa) MinTensile Strength (MPa)Elongation (%) Min
3 - 50mm690770 - 94014
50 - 100mm650760 - 93014
100 - 150mm630710 - 90014

V-Notch Impact Testing

Temp (°C)Min Energy (J)
050
-2040
-4030

Frequently Asked Questions

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Quick Specs

  • GradeS690QL / EN 10025-6
  • Yield StrengthMin 690 MPa
  • OriginEurope / Japan / Korea
  • TestingImpact Tested at -40°C
  • CertificationEN 10204 3.1 / 3.2

Key Tags

S690QL PlatesHigh Yield Strength SteelEN 10025-6Structural Steel PlatesCrane SteelHigh Tensile Steel