Difference between carbon steel and alloy steel (ASTM A234)
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Question: ASTM A234 refers to pipe fittings made of medium and high-temperature carbon steel and alloy steel; WPB is carbon steel, while WP5/WP9/WP11/WP12 are alloy steels. How should this be understood? Seeking help from experts!
The carbon content varies, and the alloy contains other metals
The carbon content varies. Alloy steel, on the other hand, contains other metal elements.
WPB has a carbon content of ≤0.30, while WP5/WP9/WP11/WP12 have carbon contents of ≤0.15, ≤0.15, 0.05-0.20, and 0.05-0.15 respectively. I’m not sure – apart from the difference in carbon content, there are also metal elements present in them; what is the difference then?
I haven’t looked at the relevant standards either; if you, the original poster, first understand what carbon steel is and what alloy steel is, it will be easier to comprehend. What are the chemical components of carbon steel, and what are those of alloy steel? Then you will be able to tell the difference.