S690QL High-Strength Steel Plate

Quenched and tempered high-strength structural steel plate, minimum yield 690 MPa, for cranes, mining machinery and offshore structures. EN 10204 3.1 certificates by heat number.

S690QL is a quenched and tempered high-strength structural steel under EN 10025-6. It combines 690 MPa minimum yield with good toughness at -40°C and good weldability, allowing lighter, stronger structures than conventional grades. Supplied in the quenched and tempered condition.

Mechanical Properties

Minimum yield strength 690 MPa.

Equivalent Grades

GB Q690D (comparable) | ASTM A514 Gr. F (comparable)

Standards

EN 10025-6 S690QL

Chemical Composition (max, %)

C	≤ 0.20%
Si	≤ 0.80%
Mn	≤ 1.70%
P	≤ 0.025%
S	≤ 0.015%
Cr	≤ 1.50%
Mo	≤ 0.70%
Ni	≤ 2.00%
V	≤ 0.12%
Nb	≤ 0.06%
Ti	≤ 0.05%
B	≤ 0.005%

Typical Applications

Mobile and crawler cranes, heavy transport vehicles, mining and earthmoving machinery, offshore structures, and high-strength welded structures where weight saving matters.

Supply from Nasteel

High-strength steel plates are supplied on inquiry — please send your grade, thickness, width, length and quantity. Mill test certificates to EN 10204 3.1 are issued by heat number.

Contact: Rocky Liu, Shenzhen NewAsia Special Steel Co., Ltd. — [email protected] — WhatsApp +86 13302996643.