1.8928/S690QL

HIGH YIELD STRUCTURAL STEEL

NORM: PN-EN 10025-6

APPLICATION:

Steel susceptible to heavily loaded, welded structural constructions, e.g. of cranes, bridges, buildings, tankers, water tanks and floodgates, working at room and reduced temperatures.

TECHNOLOGICAL INFORMATION:

The steel manufacturer decides on the type and concentration of alloying elements (up to the stated values) ensuring required properties. The semi-finished products are delivered as toughened and are not subject to heat treatment on the buyer’s premises. Stress relieving after welding should be done under conditions preventing the reduction of the mechanical properties of steel.

SEMI-FINISHED PRODUCTS:

The steel manufacturer decides on the type and concentration of alloying elements (up to the stated values) ensuring required properties. The semi-finished products are delivered as toughened and are not subject to heat treatment on the buyer’s premises. Stress relieving after welding should be done under conditions preventing the reduction of the mechanical properties of steel.

MECHANICAL PROPERTIES:

Effect of the cross-section on mechanical properties
Thickness, mm	3-50		> 50-100		> 100-150
Yield point ReH (Rp0.2), MPa	≥ 690		≥ 650		≥ 630
Ultimate tensile strength Rm, MPa	770-940		760-930		710-900
Elongation A, %	≥ 14
Mechanical properties at the reduced temperature
Temperature, °C	-60	-40		-20		0
Impact energy, KV, J (longitudinal samples)	–	≥ 30		≥ 40		≥ 50
Impact energy, KV, J (transverse samples)	–	≥ 27		≥ 30		≥ 35

INTERNATIONAL STEEL GRADES: