API P110 Casing
Data verifiedP110 is the high-strength API 5CT casing grade for deep, high-pressure wells where collapse and burst loads exceed L80 capability. It is a Q&T product with a wide 110–140 ksi yield band and is not rated for sour service.
Chemical composition
| Element | Content (%) |
|---|---|
| P | ≤0.030 |
| S | ≤0.030 |
| Note | Chemistry is mill practice (typically Cr-Mo Q&T) |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | 758–965 MPa (110–140 ksi) |
| Tensile strength | ≥862 MPa (125 ksi) |
| Density | 7.85 g/cm³ |
Heat treatment
Quenched and tempered (seamless) — mandatory delivery route for the grade.
Equivalent grades
| Standard | Designation |
|---|---|
| aisi | API 5CT P110 |
| gb | P110 (GB/T 19830) |
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Deep production casing, high-pressure gas wells, HPHT surface sections (non-sour).
Processing: Handle with care — high-strength Q&T casing is notch-sensitive; use premium connections for critical strings.
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Ask for a quotationVisit NasteelSource: API 5CT published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.