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API 5L Steel Number Steel Designation Equivalent Table
| Steel name in accordance with ISO 3183 |
Steel number in accordance with EN 10027-2 |
| Steel grades for PSL 1 pipe in Table 4 a |
| L175 |
1.8700 |
| L175P |
1.8707 |
| L210 |
1.8713 |
| L245 |
1.8723 |
| L290 |
1.8728 |
| L320 |
1.8729 |
| L360 |
1.8730 |
| L390 |
1.8724 |
| L415 |
1.8725 |
| L450 |
1.8726 |
| L485 |
1.8727 |
| Steel grades for PSL 2 pipe in Table 5 a |
| L245R |
1.8788 |
| L290R |
1.8789 |
| L245N |
1.8790 |
| L290N |
1.8791 |
| L320N |
1.8792 |
| L360N |
1.8793 |
| L390N |
1.8970 |
| L415N |
1.8736 |
| L245Q |
1.8737 |
| L290Q |
1.8738 |
| L320Q |
1.8739 |
| L360Q |
1.8741 |
| L390Q |
1.8740 |
| L415Q |
1.8742 |
| Steel grades for PSL2 pipe in Table 5 a |
| L450Q |
1.8743 |
| L485Q |
1.8744 |
| L555Q |
1.8745 |
| L245M |
1.8746 |
| L290M |
1.8747 |
| L320M |
1.8748 |
| L360M |
1.8749 |
| L390M |
1.8971 |
| L415M |
1.8752 |
| L450M |
1.8754 |
| L485M |
1.8756 |
| L555M |
1.8758 |
| L625M |
1.8753 |
| L690M |
1.8979 |
| L830M |
1.8755 |
| Steel grades for PSL 2 pipe for sour service in Table H.1 a |
| L245NS |
1.1020 |
| L290NS |
1.1021 |
| L320NS |
1.1022 |
| L360NS |
1.8757 |
| L245QS |
1.1025 |
| L290QS |
1.1026 |
| L320QS |
1.1027 |
| L360QS |
1.8759 |
| L390QS |
1.8760 |
| L415QS |
1.8761 |
| L450QS |
1.8762 |
| L485QS |
1.8763 |
| L245MS |
1.1030 |
| L290MS |
1.1031 |
| L320MS |
1.1032 |
| L360MS |
1.1033 |
| L390MS |
1.1034 |
| L415MS |
1.8766 |
| L450MS |
1.8767 |
| L485MS |
1.8768 |
| Steel grades for PSL 2 pipe for offshore service in Table J.1 a |
| L245NO |
1.1040 |
| L290NO |
1.1041 |
| L320NO |
1.1042 |
| L360NO |
1.8778 |
| L245QO |
1.1045 |
| L290QO |
1.1046 |
| L320QO |
1.1047 |
| L360QO |
1.8771 |
| L390QO |
1.8772 |
| L415QO |
1.8773 |
| L450QO |
1.8774 |
| L485QO |
1.8775 |
| L555QO |
1.8776 |
| L245MO |
1.1050 |
| L290MO |
1.1051 |
| L320MO |
1.1052 |
| L360MO |
1.8781 |
| L390MO |
1.8782 |
| L415MO |
1.8783 |
| L450MO |
1.8784 |
| L485MO |
1.8785 |
| L555MO |
1.8786 |
| a Table number for ISO 3183 only. |
Related References:
API 5CT. Tubing
API 5L. Line Pipes
OCTG API 5L ASTM Line Pipes Specification
Chemical Composition for API 5L PSL 1 Pipes
Chemical Composition for API 5L PSL 2 Pipes
API 5L PSL 1 Pipe Mechanical Properties Tensile Strength
API 5L PSL 2 Pipe Mechanical Properties Tensile Strength
API 5L PSL 2 Pipes Impact Test Table
API 5L Steel Number Steel Designation Equivalent Table ISO 3138 EN 10027-2
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