Overview
TP310H is an austenitic, stainless chromium-nickel steel suitable for high-temperature applications. It has a good resistance to carburization, sulphidation and oxidation combined with moderate creep strength and structural stability. It has a maximum service temperature in air of 1100°C (2010°F) and has good resistance in cyanide melts and neutral salts melts at high temperature. It can be used in 1. Air up to 1100°C (2010°F) , 2. Sulphur-containing atmospheres up to 650-1050°C (1200-1920°F), depending on service conditions.
Factors which be considered about is that whether the atmosphere is oxidizing or reducing and whether impurities such as sodium and vanadium are present. The high chromium content of TP310H makes the material resistant to oxidizing aqueous solutions and it also has better resistance to chloride induced stress corrosion cracking than lower alloyed steels of type TP304 and TP316.
Specification
ASTM A213/A213M-21a Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes.
Specifications | ASTM A213 / ASME SA213 |
Dimensions | ASTM, ASME and API |
Range | 1/2"OD - 12"OD |
Outside Diameter | 3.00 mm - 219.10 mm, 6.35 mm O.D to 114.3 mm O.D |
Length | Single Random, Double Random & Required Length |
Thickness | 0.40 mm - 12.70 mm, 0.8 mm to12.7 mm |
Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH120, SCH140, SCH160, XXS |
Type | Seamless |
Form | Round Tube, Square Tube, Rectangular Tube |
End | Plain End, Beveled End, Treaded |
Chemical Composition
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
SS 310H | 0.04 – 0.10 | 2.0 max | 1.00 max | 0.045 max | 0.030 max | 24.00 - 26.00 | - | 19.00 - 21.00 | 53.885 min |
Mechanical Properties
Density | Melting Point | Tensile Strength | Yield Strength | Elongation |
7.9 g/cm3 | 1402 °C (2555 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
Applications
1. Furnace tubes
2. Recuperator tubes
3. Muffle tubes in continuous wire annealing furnaces
4. Thermocouple protection tubes
5. Radiant tubes
6. Tube hangers in petroleum and steam boilers
