ASTM A633 Grade C is a normalized high-strength low-alloy structural steel plate for welded, riveted or bolted construction requiring superior notch toughness performance at low ambient temperatures. A633 Grade C has a minimum yield strength of 50 ksi [345 MPa] and may be ordered with supplemental Charpy V-notch impact test requirements.
Formability properties
A633 Grade C material exhibits excellent cold forming characteristics. Shear burrs and heat-affected zones of thermal cut edges on or near the bend axis as well as sharp corners on edges and on gas cut or punched holes located on or adjacent to the bend axis should be removed by grinding prior cold forming.
Weldability
Welding of A633 Grade C shall be performed in accordance with the applicable welding code. In the absence of a specified welding code, the following suggested minimum preheat and interpass temperatures and welding consumables are provided. Special welding consumables and welding procedures may be required to match the base metal toughness. Low hydrogen practices are strongly recommended, including the removal of surface moisture.
THICKNESS | WIDTH | LENGTH |
0.375 - 2.00 | 72 - 123 | 240 - 600 |
2.001 - 3.00 | 72 - 98 | 240 - 600 |
THICKNESS | YIELD STRENGTH | TENSILE STRENGTH | ELONGATION IN 2" | ELONGATION IN 8" |
0.375 - 2.50 | 50 | 70 - 90 | 21 | 16 |
2.501 - 3.00 | 46 | 65 - 85 | 21 | 16 |
C | MN 1) | P 2) | S 2) | SI | CB |
0.20 | 1.15 - 1.50 | 0.020 | 0.010 | 0.15 - 0.50 | 0.01 - 0.05 |
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