AASHTO M 105-09 (2018) PDF Download

The AASHTO M 105-09 (2018) standard outlines the requirements for gray iron castings used in general engineering applications. The main criterion for classification is the tensile strength of the iron as determined from cast test bars. The standard emphasizes that tensile strength is of utmost importance, prioritizing it over chemical composition.

According to this standard, castings produced in accordance with the specification are graded based on the minimum tensile strength achieved in specialized test coupons that are designed to standardize the cooling rate. It is important to note that the actual tensile strength of certain casting sections may deviate from the values obtained from the test coupons.