ASTM A312 TP347H Stainless Steel Seamless Pipe for Heat Exchangers Chemical Oil Gas
Wenzhou Shangle Steel Co., Ltd. (Shangle) founded in 2017,is a comprehensive company integrating industry and trade.As a leading supplier of stainless steel products in Wenzhou, it has a wide range of products in stock that have been rigorously tested and are ready to be shipped.
Description:
TP347H (1Cr19Ni11Nb) belongs to high-carbon niobium-containing Cr-Ni austenitic stainless steel, due to the stabilizing element Nb, its resistance to intergranular corrosion and good resistance to polysulfuric acid intergranular stress corrosion, corrosion resistance in acid, alkali, salt and other corrosive media and its line of corrosion resistance is similar to the 18-8 austenitic stainless steel with Ti, so it is widely used in the boiler, power generation, petroleum, chemical, synthetic fiber, food, Paper and other industries. Used in large boiler superheater tube, reheater tube, steam pipe and petrochemical heat exchanger.
Chemical Composition:
| Element | 347 | 347H |
| Chromium | 17.00 min.-19.00 max. | 17.00 min.-19.00 max. |
| Nickel | 9.00 min.-13.00 max. | 9.00 min.-13.00 max. |
| Carbon | 0.08 | 0.04 min.-0.10 max. |
| Manganese | 2.00 | 2.00 |
| Phosphorus | 0.045 | 0.045 |
| Sulfur | 0.03 | 0.03 |
| Silicon | 0.75 | 0.75 |
| Columbium & Tantalum | 10 x (C + N) min.-1.00 max. | 8 x (C + N) min.-1.00 max. |
| Iron | Balance | Balance |
Mechanical Properties:
Yield Strength
0.2% Offset | Ultimate Tensile
Strength | Elongation
in 2 in. | Hardness |
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 30,000 | 205 | 75,000 | 515 | 40 | 201 Brinell |
Application:
Aerospace.
Laboratory benches & equipment.
Coastal architectural panelling, railings & trim.
Boat fittings.
Chemical Processing.
Heat Exchangers.
Woven or welded screens for mining, quarrying & water filtration.
Threaded fasteners.
Detail Images:
