AlloySA213 T5 Alloy Steel Boiler Tube
FamilyCarbon & Alloy Steel
Supplied toASME SA213 T5, ASTM A213 T5
Typical serviceRefinery heaters, Boilers
Size range3/4" to 4" OD, .083" to .300" wall
TempersAnnealed, or normalized and tempered per SA213
Testing100% NDE per SA213, hydrostatic, hardness, flattening, flaring; PMI on request
OriginDomestic and approved import mills, inspected and certified in Hillsboro
Sourced alloy, certified in HillsboroAmeritube does not manufacture SA213 T5 in Texas. It is supplied from qualified domestic and international mills, then received, inspected, tested, and released under our ISO 9001:2015 system in Hillsboro, Texas, with a full mill test report.
What SA213 T5 is
T5 is a 5Cr-1/2Mo ferritic alloy steel. The chromium content forms a stable oxide that resists sulfidic corrosion and oxidation at temperatures where carbon and low-chrome steels waste away, while molybdenum carries the creep strength. It sits between T11/T22 and T9 in the refinery alloy ladder.
Chemical composition
| Element | Requirement |
|---|---|
| Carbon | 0.15% max |
| Manganese | 0.30 to 0.60% |
| Silicon | 0.50% max |
| Chromium | 4.00 to 6.00% |
| Molybdenum | 0.45 to 0.65% |
| Phosphorus / Sulfur | 0.025% max each |
Mechanical properties
| Property | Minimum |
|---|---|
| Tensile strength | 60,000 psi (415 MPa) |
| Yield strength | 30,000 psi (205 MPa) |
| Elongation in 2" | 30% |
| Hardness | 85 HRB max |
Where it is used
- Crude, vacuum, and coker heater tubes.
- Hydrotreater and hydrocracker feed-effluent exchangers.
- Sulfur recovery unit exchangers and reheaters.
- High-temperature hydrogen service within Nelson curve limits.
Related grades
Sulfur is worse or temperature is higher: T9. Hydrogen attack governs: check the Nelson curve, T9 or T22 may be required. Chloride or naphthenic acid: consider TP321 or TP347 stainless.
What to put in your SA213 T5 RFQ
OD, minimum wall, length, quantity, heat treatment, hardness limits (refineries often cap at 217 HB), PMI requirement, and any NACE MR0175 or customer specification.