Annex L (normative)
STEEL NUMBER / STEEL DESIGNATION
Table L.1 gives guidance on steel designations (steel numbers) which are used in Europe additionally to the steel name.
Table L.1
| 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. | |