ASTM A213 T22 Alloy Steel Tube For Power Plant Boilers
ASTM A213 T22 Alloy Steel Tube For Power Plant Boilers
Specification
ASTM A213 T22 alloy steel tube specification for high-temperature applications like boilers, superheaters, and heat exchangers. Known as a chrome-moly tube, it contains chromium and molybdenum to provide excellent high-temperature strength, oxidation resistance, and creep resistance.
| American Standard | Standard Name |
| A213 / A213M | Seamless Ferritic and Austenitic Alloy-steel Boiler,Superheater and Heat-Exchanger Tubes |
ASTM A213 T22 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 | Cr | Mo |
| T22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.5 | 1.90-2.60 | 0.87-1.13 |
ASTM A213 T22 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 | |||||
| T22 | K21590 | 60 [415] | 30 [205] | 30 | 163 HB/170 HV | 85 HRB |
ASTM A213 T22 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 | Subcritical Annealingor TemperingTemperature,min or range °F [°C] |
| T22 | K21590 | full or isothermal anneal | - |
| normalize and temper | 1250[675] |
ASTM A213 T22 Alloy Steel Pipe Manufacturing Proces
ASTM A213 T22 Alloy Steel Pipe Application
- Power Plant Boilers
- Petrochemical Process Heaters
- High-Temperature Hydrogen Service (Hydrogen Attack)
- Heat Exchangers and Condensers
- General High-Temperature Pressure Tubing
ASTM A213 T22 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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