API 5L Grade B PSL1 refers to a specification for seamless and welded Steel pipes with a minimum yield strength of 245 MPa (35,500 psi). The chemical composition requirements for API 5L Grade B PSL1 are as follows:
Carbon (C): Maximum of 0.28%
Manganese (Mn): Maximum of 1.20%
Phosphorus (P): Maximum of 0.030%
Sulfur (S): Maximum of 0.030%
Silicon (Si): Maximum of 0.45%
Nickel (Ni): Maximum of 0.50%
Chromium (Cr): Maximum of 0.50%
Copper (Cu): Maximum of 0.50%
Molybdenum (Mo): Maximum of 0.15%
Vanadium (V): Maximum of 0.10%
These chemical composition limits are specified to ensure the desired mechanical and physical properties of the steel pipes.
This is the chemical composition requirement for API 5L Grade B PSL1 as per the latest available information up to September 2021. It's always advisable to refer to the official API 5L standard or consult the relevant authorities for the most up-to-date specifications.
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