ASTM A213 T128 Alloy Steel Tube For High Temperature Service
ASTM A213 T128 Alloy Steel Tube For High Temperature Service
Specification
ASTM A213 T128 is a seamless ferritic alloy steel tube primarily used in boilers, superheaters, and heat exchangers for high-temperature and high-pressure service. Reheated and furnished in full annealed, isothermal annealed, or normalized and tempered condition. (OD)3.2 mm (1/8 in.) to 127 mm (5 in.)
| American Standard | Standard Name |
| A213 / A213M | Seamless Ferritic and Austenitic Alloy-steel Boiler,Superheater and Heat-Exchanger Tubes |
ASTM A213 T128 Alloy Steel Pipe Chemical Composition
Sources American Standard A213 / A213M TABLE 1 Chemical Composition Limits, % , for Low Alloy Steel
| Grade | UNS Designation |
C | Mn | P | S | Si | Ni | Cr | Mo | V | B | Nb | N | Al | W | Others |
| T128 | K91421 | 0.12-0.17 | 0.30-0.80 | 0.02 | 0.01 | 0.2-0.60 | 0.10-0.40 | 10.50-12.00 | 0.20-0.60 | 0.15-0.30 | 0.008-0.015 | 0.02-0.06 | 0.002-0.020 | 0.02 | 1.5-2.20 | Co 1.50-2.20 Cu 0.15 |
ASTM A213 T128 Alloy Steel Pipe Mechanical Properties
Sources American Standard A213 / A213M TABLE 4 Tensile and Hardness Requirements
| Grade Low Aloy Steels: |
UNS Designation |
TensileStrength. min, ksi [MPa] |
Yield Strength ,min, ksi [MPa] |
Elongationin 2 in. or 50 mm. min, %B.C |
HardnessA | |
| Brinell/Vickers | Rockwell | |||||
| T128 | K91421 | 94 [650] | 71 [490] | 20 | 265 HBW/280HV | 27 HRC |
ASTM A213 T128 Alloy Steel Pipe Heat Treatment
Sources American Standard A213 / A213M TABLE 3 Heat Treatment and Grain Size Requirements A
| Grade Ferritic Alloy Steels |
UNS Designation |
Heat Treatment Type | Austenitizing/Solution Treatment StabilizingTemperature,min or range °F [°C] |
Cooling Media | Subcritical Annealingor TemperingTemperature,min or range °F [°C] |
| T128 | K91421 | normalize and temper | 1975-2140[1080-1170] | air | 1400-1470[760-800] |
ASTM A213 T128 Alloy Steel Pipe Manufacturing Proces
ASTM A213 T128 Alloy Steel Pipe Application
- Low to Medium-Temperature Boiler Sections
- Industrial & Process Heating
- General High-Temperature Service
ASTM A213 T128 Alloy Steel Pipe Packing & Loading
a. 1/2"-2"Plain end with black oil paint, caps both ends, bundles with loading belt.
b. 2"-4"Beveled end with black oil paint, caps both ends, bundles with loading belt.
c. 10"-20"Beveled end with black oil paint, caps both ends, loose packed in to container.
→Alloy Steel Pipes is transported in containers
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