Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
Add to Cart
ASTM A213 T9 Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.
Overview of ASTM A213
A213 is often called chrome moly tube because of the chemical makeup of Molybdenum (Mo) and Chromium (Cr). Molybdenum increases the strength of steel as well as the elastic limit, resistance to wear, impact qualities, and hardenability. Moly increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is the most effective single additive that increases high temperature creep strength. It also enhances the corrosion resistance of steel, and inhibits pitting. Chromium (or chrome) is the essential constituent of stainless steel. Any steel with 12% or more Chrome is considered stainless. Chrome is virtually irreplaceable in resisting oxidation at elevated temperatures. Chrome raises the tensile, yield, and hardness at room temperatures. The composition chrome moly alloy steel Pipe make it ideal for use in power plants, refineries, petro chemical plants, and oil field services where fluids and gases are transported at extremely high temperatures and pressures.
Features of ASTM A213 T9 Alloy Steel Heat Exchanger Tubes
A213 T9 Equivalent Material Grade
| Grade | UNS | Steel Number | Trade Name |
| T9 | S50400 | 1.7386 | 9Cr-1Mo |
Mechanical Properties
| Grade | Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| T9 | 415 min | 205 min | 30 min | 179 max |
Chemical Composition
| Grade | C≤ | Mn | P≤ | S≤ | Si≤ | Mo |
|---|---|---|---|---|---|---|
| T9 | 0.15 max | 0.30~0.60 | 0.025 | 0.025 | 0.25-1.0 | 0.90~1.10 |
Tolerance of SA213 T9 Steel Tubing
| Outside Diameter | OD Tolerance | WT Tolerance | Ovality Tolerance | Cut Length Tolerance |
| OD≤ 12, 7 mm | ± 0, 13 mm | ± 15 % | – | + 3, 18 mm, – 0 mm |
| 12, 7 mm < OD ≤ 38, 1 mm | ± 0, 13 mm | ± 10 % | max, 1, 65 mm | + 3, 18 mm, – 0 mm |
| 38, 1 mm < OD ≤ 88, 9 mm | ± 0, 25 mm | ± 10 % | max, 2, 41 mm | + 4, 76 mm, – 0 mm |
