API 5L X46
Data verifiedX46 is the step between X42 and X52 in the API 5L line-pipe ladder — less famous than either neighbour, but written into many existing flowline and gathering specifications, especially in the Americas, where its 46 ksi yield covers medium-pressure oil and gas service.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.24 (PSL2) |
| Si | ≤0.45 |
| Mn | ≤1.40 (PSL2) |
| P | ≤0.025 |
| S | ≤0.015 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | ≥320 MPa (46,400 psi) |
| Tensile strength | 435–760 MPa (PSL2) |
| Density | 7.85 g/cm³ |
Heat treatment
As-rolled, normalized or TMCP per PSL2 delivery condition; toughness and DWTT requirements apply at PSL2.
Equivalent grades
| Standard | Designation |
|---|---|
| din | L320 (near) |
| aisi | API 5L X46 (PSL2) |
| gb | L320 (GB/T 9711) |
Compare side by side: API 5L X46 vs API 5L X42 · API 5L X46 vs API 5L X52
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Gathering lines, flowlines, medium-pressure transmission laterals, station piping.
Processing: Field-weldable under API 1104 procedure qualification like the other X-grades; PSL2 traceability and toughness apply.
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Ask for a quotationVisit NasteelSource: API 5L published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.