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[China]
Trade Verify
Address: 20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact name:Jikin Cai
Yuhong Group Co.,Ltd |
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Verified Suppliers
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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 |
