ASTM A213 T921 Alloy Steel Tube For High Temperature Service
ASTM A213 T921 Alloy Steel Tube For High Temperature Service
Specification
ASTM A213 T921 is a seamless ferritic alloy steel tube primarily used in boilers, superheaters, and heat exchangers for high-temperature and high-pressure service.
| American Standard | Standard Name |
| A213 / A213M | Seamless Ferritic and Austenitic Alloy-steel Boiler,Superheater and Heat-Exchanger Tubes |
ASTM A213 T921 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 | N | Al | Others |
| T921 | K91201 | 0.08-0.12 | 0.5-0.7 | 0.03 | 0.02 | 1.6-2..2 | 0.8-1.4 | 8.0-9.5 | 0.8-1.1 | 0.02-0.05 | 0.04 | Cu 0.8-1.4 |
ASTM A213 T921 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 | |||||
| T921 | K91201 | 109 [750] | 84 [580] | 20 | 276 HBW/290HV | 26 HRC |
ASTM A213 T921 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] |
| T921 | K91201 | normalize and temper | 1670-1740[910-950] | air | 1350-1420[730-770] |
ASTM A213 T921 Alloy Steel Pipe Manufacturing Proces
ASTM A213 T921 Alloy Steel Pipe Application
- High-Temperature Power Plant Components
- Heat Recovery Steam Generators
- Petrochemical Industry
ASTM A213 T921 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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