Quenched & Tempered (Q&T) steel plates are high-strength structural steels processed through controlled heating and rapid cooling followed by tempering. This process provides excellent strength, toughness, and impact resistance, making them suitable for heavy-duty and critical structural applications.
Quard is a martensitic abrasion resistant steel with an average hardness of 400, 450 and 500 HBW. Due to its versatility in terms of high toughness, good cold formability and excellent weldability, Quard combines outstanding workshop performance and long lasting wear resistance.
Quard is recommended for the following applications:
| Property | S690QL | S700 | S700MC |
|---|---|---|---|
|
Standard
|
EN 10025-6
|
EN 10025-6
|
EN 10149-2
|
|
Yield Strength (MPa)
|
≥690
|
≥700
|
≥700
|
|
Tensile Strength (MPa)
|
770–940
|
750–930
|
750–950
|
|
Elongation
|
~14%
|
12–14%
|
10–12%
|
|
Process
|
Q&T
|
Q&T
|
TMCP
|
|
Formability
|
Good
|
Moderate
|
Excellent
|
|
Weldability
|
Good
|
Good
|
Excellent
|
|
Main Use
|
Heavy structures
|
Load-bearing frames
|
Automotive & forming
|
(Custom sizes available on request)