THQ-60C (ER90S-G) is a high-tensile low-alloy steel welding wire engineered for joining 90 ksi class high-strength steels. It delivers exceptional yield strength, superior crack resistance, and excellent low-temperature toughness for heavy-duty structural applications.
Features
- High tensile strength (90 ksi / 620 MPa class) with superior yield properties
- Low-alloy formulation engineered for excellent crack and defect resistance
- Outstanding impact toughness at low operating temperatures
- Smooth, stable arc performance with minimal spatter and clean bead appearance
Typical Applications
- High-strength low-alloy structural steel fabrication and heavy construction
- Mining machinery, earthmoving equipment, and mobile cranes
- Pressure vessels, industrial boilers, and high-pressure piping systems
- Offshore structures, shipbuilding, and heavy equipment repairs
- Joining high-yield steels requiring 90 ksi class tensile strength
Welding Positions
- PA / PB / PC / PD / PE / PF
WARNING
- Rust, oil, moisture, and other contaminants must be removed from the weld zone before welding.
- The mechanical properties of all-weld metal are determined by heat input; lower heat input is generally preferred to higher heat input.
