Works Designation
Condition of Delivery
Water quenched and tempered.
Typical Applications
Heavy road vehicles: chassis, dumper bodies. Cranes construction: booms ofbile cranes. Structural
steelworks: bridges, bridge components, components for offshore structures. Pressure vessels: fixed and
transportable storage tanks, vessels. Power plants: penstocks, spiral cases. Materials handling: lifting and mobile
equipment. Mining and earthmoving equipment: roof supports. Agricultural equipment and trailers
Processing
Cold-Forming
The steel is suitable for cold-forming adhering to a bending or folding raof > 4 times plate thickness
longitudinal and > 3 times plate thickness transverse to rolling directionbsequent stress relief annealing is
possible up to a temperature of 580°C.
Hot-Forming
Hot-forming above 580°C is possible. A subsequent quenching and tempering has to be carried out according to
the delivery condition.
Milling
Drilling with cobalt-alloyed high-speed steels HSSCO, the cutting speed should be approximately 17 - 19 m/min. If
HSS drills are used, it should be approximately 3 - 5 m/min. cutting sppeed should be approximately 3 - 5 m/min.
Flame-Cutting
The material temperature should be at least room temperature. We recommeended the following preheating
temperatures: for plate thicknesses > 40mm up to 100°C, > 80mm up to 150°C and > 100mm up to 175°C
Welding
The steel is suitable for all known welding methods. The material temperate should be at least room
temperature. We recommended the following preheating temperatures: for plate thicknesses > 20mm up to 75°C
40mm up to 100°C, > 60mm up to 150°C and > 100mm up to 175°C.Interpass temperature should be between
V
150°C-225°C.
These indications are standard values only. In general indications of SSEW 088 should be adhered to. The ta/s
times should be between 5 and 15s, depending on the welding technique used. A subsequent stress relief
annealing for constructional reasons should be done in the temperature range of 530°C - 580°C.
What is S690QL used for?
Uses include earthmoving equipment, dump trucks, mobile cranes, drilling rigs, high-speed fans, and bridges. ASTM A514, EN 10149-2 Grade S700MC, AS/NZS 3579 Grade 700, AM 700, Bisalloy 80. S690QL steel plate can be readily formed or bent at room temperature if adequate power is available and proper procedures are used.
Which grade is best in steel?
1. Carbon Steel (Grade 1018) Carbon steel, specifically Grade 1018, is one of the most commonly used steel grades due to its excellent weldability, machinability, and affordability.
What is the difference between Weldox 700 and S690QL?
The versatile Weldox 700 shows excellent formability and can be welded following standard welding procedures. With excellent consistency and hardness, the Strenx S690ql grade has enhanced toughness and superior resistance against fracture induced by stress.