304H vs 347H - Difference Between 304H and 347H
TP304H Stainless Steel Tube
Features:
Stainless heat-resistant steel, with good bending, welding process performance, corrosion resistance, high durability and structural stability, cold deformation ability is very good. The use temperature is up to 650 °C and the oxidation temperature is up to 850 ° C.
Application:
It is used to manufacture heat exchanger tubes for super-generator boilers, reheater tubes, steam pipes and petrochemicals. The allowable oxidation temperature for boiler tubes is 705 °C.
Related standards: ASTM A213, ASME SA 213
TP347H Stainless Steel Tube:
Features:
It is a stable austenitic heat-strength steel. It has good heat strength and resistance to intergranular corrosion, good welding performance, and good corrosion resistance in alkali, seawater and various acids.347H and 347HFG in higher elevated temperature allowable stresses for these stabilized alloys for ASME Boiler and Pressure Vessel Code applications.
Application:
Heat exchangers for large boiler superheater tubes, reheater tubes, steam lines and petrochemicals. The allowable oxidation temperature in boiler tubes is 750 °C.
Related standards: ASTM A312 / ASME SA 312, ASTM A213
Related References:
Stainless Steel Description
Stainless Steel General Information
Chromium In Stainless Steel
Stainless Steel " L" "H" Grade
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