ASME SA213 TP347H STAINLESS STEEL PICKLING ANNEALED SEAMLESS TUBE
ASME SA213 TP347H STAINLESS STEEL PICKLING ANNEALED SEAMLESS TUBE
Overview
TP347H stainless steel tube is austenitic stainless and acid resistant steel, widely used in industries such as aviation, petrochemical, food, paper, etc., such as the exhaust main and branch pipes of aircraft engines, hot gas pipelines of turbo compressors, and parts that work under small loads and temperatures not exceeding 850 ℃.
SS347 is a type of stainless steel with excellent stability. Under the conditions of temperature reaching 427-816 ° C and chromium carbide precipitation, good resistance to intergranular corrosion can still be maintained. Due to the addition of titanium in the composition, the SS347 alloy can still maintain stability despite the formation of chromium carbide.
SS347 stainless steel has advantages in working in high-temperature environments due to its excellent mechanical properties. Compared to SS304, SS347 has better ductility and stress fracture resistance.
Characteristics of TP347H stainless steel tube
1. Chemical composition and manufacturing process
TP347H stainless steel pipe is mainly composed of alloy elements such as Cr Ni Mo Ti, among which the C content is less than 0.08%, titanium+niobium ≥ 0.70%, and other elements. This material adopts the production process of seamless steel pipes and welded steel pipes.
2. Physical performance
TP347H stainless steel pipe has excellent physical properties, especially high temperature resistance and oxidation resistance. Its tensile strength is 515MPa, yield strength is 205MPa, hardness is 81HRB, tensile strength is 74.8Ksi (515MPa), elongation is 35%, and the microstructure is austenite.
3. Chemical properties and corrosion resistance
TP347H stainless steel pipe has excellent corrosion resistance, which can withstand the corrosion of water vapor, air, food, and chemical substances, including acids, and chloride ions. At the same time, it also has high-temperature strength, which can maintain the chemical stability and physical properties of the material in high-temperature environments.
Chemistry Composition
| C, % | Si, % | Mn, % | P, % | S, % | Cr, % | Ni, % | Nb, % |
| 0.04-0.10 | 1.00 max | 2.00 max | 0.045 max | 0.030 max | 17.0-19.0 | 9.0-13.0 | 8*C-1.1 |
Mechanical Properties
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 515 min | 205 min | 35 min | 192 max |
Outside Diameter Tolerance
| Hot rolled | Outside Diameter, mm | Tolerance, mm |
| OD≤101.6 | +0.4/-0.8 | |
| 101.6＜OD≤190.5 | +0.4/-1.2 | |
| 190.5＜OD≤228.6 | +0.4/-1.6 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, mm |
| OD＜25.4 | ±0.10 | |
| 25.4≤OD≤38.1 | ±0.15 | |
| 38.1＜OD＜50.8 | ±0.20 | |
| 50.8≤OD＜63.5 | ±0.25 | |
| 63.5≤OD＜76.2 | ±0.30 | |
| 76.2≤OD≤101.6 | ±0.38 | |
| 101.6＜OD≤190.5 | +0.38/-0.64 | |
| 190.5＜OD≤228.6 | +0.38/-1.14 |
Wall thickness & Tolerance
| Hot rolled | Outside Diameter, mm | Tolerance, % |
| OD≤101.6, WT≤2.4 | +40/-0 | |
| OD≤101.6, 2.4＜WT≤3.8 | +35/-0 | |
| OD≤101.6, 3.8＜WT≤4.6 | +33/-0 | |
| OD≤101.6, WT>4.6 | +28/-0 | |
| OD>101.6, 2.4＜WT≤3.8 | +35/-0 | |
| OD>101.6, 3.8＜WT≤4.6 | +33/-0 | |
| OD>101.6, WT>4.6 | +28/-0 | |
| Cold Drawn | Outside Diameter, mm | Tolerance, % |
| OD≤38.1 | +20/-0 | |
| OD>38.1 | +22/-0 |
Application:
- Off-Shore Oil Drilling Companies
- Power Generation
- Petrochemicals
- Gas Processing
- Specialty Chemicals
- Pharmaceuticals
- Pharmaceutical Equipment
- Chemical Equipment
- Sea Water Equipment
- Heat Exchangers
- Condensers
- Pulp and Paper Industry
Material Test:
- Mechanical Testing Such as Tensile of Area
- Hardness Test
- Chemical Analysis – Spectro Analysis
- Positive Material Identification – PMI Testing
- Flattening Test
- Micro and MacroTest
- Pitting Resistance Test
- Flaring Test
- Intergranular Corrosion (IGC) Test
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