Please kindly inform me about the difference between carbon steel ASTM API 5 LS gr B and ASTM API 5 gr B.?

Question

Please also inform me the chemical composition of them, both.

I really need the information sooner.

Thanking you

Answer 1

ASTM stands for the AMERICAN SOCIETY OF TESTING AND MATERIALS

API might refer to the AMERICAN PETROLEUM INSTITUE or a piping standard.

So in this case you are refering to a grade of steel that meets ASTM and AP definitions for some material.

I could not find a specific reference for this material but LS might stand for low slip or low sulfur.

Answer 2

it is for some days i see your question and become sorry that i have not newest book of Key to steels . please refer to this bok.