Yochael1996
Civil/Environmental
Dear all,
It says in the ASTM Specification that the A307 bolt is originally proved in 1947, and I was told that the tensile strength at the year of 1947 was only 50ksi (now it is 60ksi). The official website of ASTM only keeps the specification records after 1978, and it is already 60ksi. I am trying to figure out in which year the tensile strength increased from 50ksi to 60ksi? Any references are very much appreciated!
Thank you in advance!
Best,
Yochael
It says in the ASTM Specification that the A307 bolt is originally proved in 1947, and I was told that the tensile strength at the year of 1947 was only 50ksi (now it is 60ksi). The official website of ASTM only keeps the specification records after 1978, and it is already 60ksi. I am trying to figure out in which year the tensile strength increased from 50ksi to 60ksi? Any references are very much appreciated!
Thank you in advance!
Best,
Yochael
