ASTM A213 T9 Alloy Steel Pipe For Power Generation Boilers
ASTM A213 T9 Alloy Steel Pipe For Power Generation Boilers
Specification
ASTM A213 T9 is a seamless alloy steel tube made of chromium-molybdenum that is designed for high-temperature and high-pressure applications like boilers, superheaters, and heat exchangers. It has excellent resistance to corrosion and oxidation at elevated temperatures, a minimum tensile strength of 415 MPa, and a yield strength of 205 MPa. The specific grade is defined by its 8.00-10.00% chromium and 0.90-1.10% molybdenum content.
| American Standard | Standard Name |
| A213 / A213M | Seamless Ferritic and Austenitic Alloy-steel Boiler,Superheater and Heat-Exchanger Tubes |
ASTM A213 T9 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 |
| T9 | K90941 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 |
ASTM A213 T9 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 | |||||
| T9 | K90941 | 60 [415] | 30 [205] | 30 | 179 HBW/190 HV | 89 HRB |
ASTM A213 T9 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 | Cooling Media | Subcritical Annealingor TemperingTemperature,min or range °F [°C] |
| T9 | K90941 | full or isothermal anneal | - | - |
| normalize and temper | - | 1250[675] |
ASTM A213 T9 Alloy Steel Pipe Manufacturing Proces
ASTM A213 T9 Alloy Steel Pipe Application
- High-Temperature Power Boilers
- Petrochemical Processing
- Services with Severe Sulfur Attack
- High-Temperature Piping & Transfer Lines
- Components Exposed to Hydrogen
ASTM A213 T9 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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