QCIT-GR Base Metal:
The beam, transition, end, and buffer sections shall consist of sheet made of open hearth, electric furnace or basic oxygen steel and shall meet the mechanical properties specified in table as below.
| Mechanical properties: The mechanical properties of the base metal shall conform to the following requirements: |
|
Beams and transition sections: Yield Point, minimum, 345 MPa (50000 psi); Tensile Strength, minimum 483 MPa (70000 psi); and Elongation, in 50 mm (2 in.), minimum, 12 percent. |
|
End and buffer sections: Yield Point, minimum, 227 MPa (33000 psi); and Tensile Strength, minimum 310 MPa (45000 psi). |
| Model | Min Check Limit Single-Spot Test | Min Check Limit Triple-Spot Test | ||
| g/m2 | oz/ft2 | g/m2 | oz/ft2 | |
| Type I | 550 | 1.80 | 610 | 2.00 |
| Type II | 1100 | 3.60 | 1220 | 4.00 |
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