C&N industrial Group, pipe, fitting and flanges manufacturers,fbe epoxy and pe coating for pipeline since 1991,with brand C&N huitong ,C&N hongcheng.
ASME SA213/213M T91 SMLS Tube
ASTM A213 /ASME SA213 T91 Seamless alloy tubes shall be made by the seamless process and shall be either hot-finished or cold-finished as specified.
ASTM A213 /ASME SA-213 T91 alloy seamless steel tubes are widely used for Boiler, Superheater, and Heat-exchangers
ASTM A213 /ASME SA213 T91 tubing sizes and thicknesses usually furnished to this specification are 3/4 in. [19.05 mm] outside diameter to 5 in. [127 mm] in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.
Standard: ASME SA-213, ASTM A213 /A213M,
Material: T91
PMI (Positive Material Identification) is a rapid and non-destructive method of verifying the chemical composition of T91 metals and alloys. Portable and cost effective, PMI can be carried out in one of our state of the art laboratories or in the field.
Prior to despatch, we will repeat the PMI test for all Heat No. ASME SA-213 T91 alloy tubes that are new production. For stock one it is necessary to do 100% PMI inspection for SA-213 T91 seamless tube.
Product Details
Description Name: ASTM A213 / ASME SA213 T91 Seamless tubes, SA-213 T91 Seamless alloy tubes;
T91 seamless boiler tubes, A213 T91 alloy tube.
Size:15.88 to 114 mm.
Wall Thickness: 1.65mm to 12.7mm.
Shape: Round.
Length: Single random length/ Double random length or as customer’s actual request.
C&N Hongcheng is a professional pipe manufacturer and supplier from China, we have ASME SA213/213M T91 Seamless Steel Pipe in stock, please contact us for more product information.
SA-213 T91 Tube Chemical Composition:
| ASME SA-213 T91 Chemical Components (%) | ||||||||||||
| Grade | C | Mn | P | S | Si | Cr | Mo | V | Nb | Ni | Al | N |
| T91 | 0.07-0.14 | 0.30-0.60 | ≤0.020 | ≤0.01 | 0.2-0.5 | 8.0-9.5 | 0.85-1.05 | 0.18-0.25 | 0.06-0.1 | ≤0.4 | ≤0.2 | 0.03-0.07 |
SA-213 T91 Tube Heat Treatment Requirements
| Grade | UNS Number | Heat Treat Type | Austenitizing/ Solutioning Temperature, min or range °F [°C] | Subcritical Annealing or Tempering Temperature, Min or range °F [°C] |
| T91 | K90901 | Normalize and temper | 1900-1975[1040-1080] | 1350-1470[730-800] |
SA-213 T91 Tube Tensile Requirements and Hardness:
| Mechanical properties | ||||
| Grade | Tensile | Yield | Elongation | Hardness |
| Strength (Mpa) | Strength (Mpa) | (%) | ||
| T91 | ≥585 | ≥415 | ≥20 | ≤250HBW265HV(25HRC) |
- Flattening Test—One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot
- Flaring Test—One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot
- Hydrostatic or Nondestructive Electric Test—Each ASTM A213 T5, T5b tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer unless otherwise specified in the purchase order.
Materials and Manufacture:
- The alloy steel shall be fully killed.
- The tubes shall be manufactured by the seamless process and shall be either hot or cold finished as specified.
- The ferritic alloy and ferritic stainless steels shall be reheated for heat treatment in accordance with the requirements of the standard. The heat treatment shall be carried out separately and in addition to the heating for hot forming.
