Brand Name: | YUHONG |
MOQ: | 200-500KGS |
Price: | Negotiable |
Packaging Details: | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps) |
Payment Terms: | L/C,T/T,AT SIGHT |
ASTM A312 TP347 Serrated Spiral High-Frequency Welding (HFW) Finned Tube is an advanced heat transfer solution designed for extreme oxidation and creep resistance. This high-performance component combines a seamless stabilized austenitic stainless steel base tube (ASTM A312 TP347) with helically wound serrated spiral fins bonded via high-frequency resistance welding.
Element | TP347 Base (%) | Critical Function |
---|---|---|
Chromium (Cr) | 17.0-20.0 | Oxidation shield |
Nickel (Ni) | 9.0-13.0 | Austenite stability |
Niobium (Nb) | 10×C min* | Intergranular corrosion resistance |
Carbon (C) | ≤ 0.08 | Weldability |
Manganese (Mn) | ≤ 2.00 | Strength |
Silicon (Si) | ≤ 1.00 | Deoxidation |
Phosphorus (P) | ≤ 0.045 | Purity |
Sulfur (S) | ≤ 0.030 | Machinability |
Property | Value |
---|---|
Tensile Strength | ≥ 515 MPa |
Yield Strength | ≥ 205 MPa |
Max Service Temp. | 870°C (1,598°F) |
Hardness | ≤ 192 HB |
Fin Bond Shear Strength | > 140 MPa |
Oxidation Resistance | ≤ 0.1 g/m²*h (980°C/air) |
Brand Name: | YUHONG |
MOQ: | 200-500KGS |
Price: | Negotiable |
Packaging Details: | Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps) |
Payment Terms: | L/C,T/T,AT SIGHT |
ASTM A312 TP347 Serrated Spiral High-Frequency Welding (HFW) Finned Tube is an advanced heat transfer solution designed for extreme oxidation and creep resistance. This high-performance component combines a seamless stabilized austenitic stainless steel base tube (ASTM A312 TP347) with helically wound serrated spiral fins bonded via high-frequency resistance welding.
Element | TP347 Base (%) | Critical Function |
---|---|---|
Chromium (Cr) | 17.0-20.0 | Oxidation shield |
Nickel (Ni) | 9.0-13.0 | Austenite stability |
Niobium (Nb) | 10×C min* | Intergranular corrosion resistance |
Carbon (C) | ≤ 0.08 | Weldability |
Manganese (Mn) | ≤ 2.00 | Strength |
Silicon (Si) | ≤ 1.00 | Deoxidation |
Phosphorus (P) | ≤ 0.045 | Purity |
Sulfur (S) | ≤ 0.030 | Machinability |
Property | Value |
---|---|
Tensile Strength | ≥ 515 MPa |
Yield Strength | ≥ 205 MPa |
Max Service Temp. | 870°C (1,598°F) |
Hardness | ≤ 192 HB |
Fin Bond Shear Strength | > 140 MPa |
Oxidation Resistance | ≤ 0.1 g/m²*h (980°C/air) |