SUS 347H is a high-temperature resistant stainless steel grade that offers excellent corrosion resistance and mechanical properties. Pipes and tubes made from SUS 347H are ideal for applications in industries such as petrochemical, chemical, and power generation, where elevated temperatures and corrosive environments are common. These pipes and tubes exhibit superior creep resistance, making them suitable for high-temperature service conditions. The addition of niobium in the composition enhances the stability of the material against sensitization during welding, preventing intergranular corrosion.
SUS 347H pipes and tubes are widely used in the construction of heat exchangers, boilers, and pressure vessels. Their robust construction and ability to withstand extreme conditions make them essential components in various industrial processes. The seamless nature of SUS 347H pipes ensures uniformity and reliability in critical applications. Additionally, their high corrosion resistance minimizes the risk of material degradation over time, leading to a longer service life and reduced maintenance costs. In conclusion, SUS 347H pipes and tubes are indispensable in industries requiring reliable performance under high-temperature and corrosive environments. Their excellent mechanical properties, corrosion resistance, and stability against sensitization make them a preferred choice for demanding applications in the industrial sector.
Specifications | ASTM A 312 ASME SA 312 / ASTM A 358 ASME SA 358 |
Dimensions | ASTM, ASME and API |
SS 347H Pipes | 1/2″ NB – 16″ NB |
ERW 347H Pipes | 1/2″ NB – 24″ NB |
EFW 347H Pipes | 6″ NB – 100″ NB |
Size | 1/8″NB TO 30″NB IN |
Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
Form | Round Pipes, Custom Pipes, Square Pipes, Rectangular Pipe, “U” Shape, Hydraulic Pipes |
Length | Single Random, Double Random & Cut Length. |
End | Plain End, Beveled End, Treaded |
Grade | 347H | |
UNS No | S34709 | |
Old British | BS | – |
En | – | |
Euronorm | No | 1.4961 |
Name | – | |
Swedish SS | – | |
Japanese JIS | SUS 347H |
Grade | 347H | |
---|---|---|
min | max | |
C | 0.04 | 0.10 |
Mn | – | 2.0 |
Si | – | 1.00 |
P | – | 0.045 |
S | – | 0.030 |
Cr | 17.0 | 19.0 |
Mo | 3.00 | 4.00 |
Ni | 9.0 | 13.0 |
N | – | – |
Grade | 347H | |
---|---|---|
Tensile Strength (MPa) min | 515 | |
Yield Strength 0.2% Proof (MPa) min | 205 | |
Elongation (% in 50mm) min | 40 | |
Hardness | Rockwell B (HR B) max | 92 |
Rockwell B (HR B) max | 201 |
Grade | 347H | |
---|---|---|
Density (kg/m3) | 8000 | |
Elastic Modulus (GPa) | 193 | |
Mean Coefficient of Thermal Expansion (m/m/0C) | 0-1000C | 17.2 |
0-3150C | 17.8 | |
0-5380C | 18.4 | |
Thermal Conductivity (W/m.K) | at 1000C | 16.2 |
at 5000C | 21.5 | |
Specific Heat 0-1000C (J/kg.K) | 500 | |
Electrical Resistivity (n.m) | 720 |