Grades

ASTM F1554 consists of three grades that correspond to the minimum yield strength of the steel. These grades are as follows:

F1554 grade 36

36 ksi mininum yield strength.

F1554 grade 55

F1554 Grade 55

55 ksi mininum yield strength.

F1554 grade 105

F1554 Grade 105

105 ksi mininum yield strength.