|
| Brand Name: | YUHONG |
| MOQ: | 200-500KGS |
| Price: | Negotiable |
| Payment Terms: | L/C,T/T,AT SIGHT |
| Supply Ability: | According to Clients' requirements |
1.ASME SA312 TP304 HWF Solid Fin Tube with 11-13 Cr Fin
ASME SA312 TP304 is a versatile austenitic stainless steel grade known for its excellent corrosion resistance, formability, and weldability. With a balanced composition of 18% chromium and 8% nickel, it provides reliable performance across a wide range of corrosive environments and temperatures.
The ASME SA312 TP304 HWF (High-Frequency Welded) Solid Fin Tube with 11-13 Cr Fin is an advanced bimetallic heat transfer solution that combines a TP304 stainless steel base tube with solid fins made of 11-13% chromium steel. This engineered combination provides an optimal balance between corrosion resistance and high-temperature capability while maintaining cost-effectiveness.
2.Chemical Composition
Base Tube - TP304 (%)
|
Element |
C |
Si |
Cr |
Mn |
P |
Ni |
S |
|
Range |
≤ 0.080 |
≤ 0.75 |
18.00-20.00 |
≤ 2.00 |
≤ 0.045 |
8.00-11.00 |
≤ 0.030 |
Fin Material - 11-13 Cr Steel (%)
|
Element |
C |
Cr |
Si |
Mn |
P |
S |
|
Range |
0.08-0.18 |
11.00-13.00 |
0.50-1.00 |
0.30-0.60 |
≤ 0.030 |
≤ 0.025 |
3.Mechanical Properties (Base Tube - TP304)
|
Tensile Strength |
Yield Strength |
Elongation |
Hardness |
|
≥ 515 MPa (75 ksi) |
≥ 205 MPa (30 ksi) |
≥ 35% |
≤ 201 HB |
4.Equivalent Material of TP304
|
ASTM/AISI |
UNS NO |
EN |
ISO |
JIS |
GB/T |
|
TP304 |
S30400 |
1.4301 |
X5CrNi18-10 |
SUS 304 |
06Cr19Ni10 |
5.Key Features & Advantages
1.Optimized Material Performance: TP304 base tube provides excellent corrosion resistance for process media, while 11-13% Cr fins offer superior oxidation resistance in high-temperature flue gas environments
2.Enhanced High-Temperature Capability: 11-13% chromium fins maintain strength and resist scaling at temperatures up to 650°C (1200°F)
3.Cost-Effective Solution: More economical than all-stainless construction while providing better high-temperature performance than carbon steel fins
4.Robust Welded Joint: High-frequency welding creates a strong metallurgical bond between dissimilar materials with minimal thermal affected zone
5.Thermal Expansion Compatibility: Better thermal expansion match between TP304 and 11-13% Cr steel compared to carbon steel fins, reducing thermal stress
6.Comparison with Other Materials
Fin Material:
11-13 Cr Fin vs. Carbon Steel Fin:
11-13 Cr fins provide significantly better oxidation resistance and higher temperature capability, making them suitable for more severe service conditions in boiler and heater applications.
11-13 Cr Fin vs. Stainless Steel Fin:
While offering slightly lower corrosion resistance than full stainless fins, 11-13 Cr fins provide adequate high-temperature performance at a lower cost, with better thermal compatibility.
Bare Tube Material :
Comparison with TP304 VS.TP316
TP304 offers cost-effectiveness and good general corrosion resistance, but is prone to chloride-induced pitting at the fin-to-tube interface. TP316 provides superior resistance to chlorides and acidic condensates due to its molybdenum content, ensuring longer service life in aggressive environments, albeit at a higher initial cost.
7.Applications Of ASME SA312 TP304 HWF Solid Fin Tube with 11-13 Cr Fin
1.Boiler Systems: Economizer and air preheater tubes in power plant and industrial boilers
2.Process Heaters: Convection section tubes in refinery and petrochemical heaters
3.Waste Heat Recovery: Heat exchanger tubes in HRSG and process waste heat units
4.Chemical Processing: High-temperature heat exchangers with corrosive process media
5.Industrial Furnaces: Heat recovery tubes in various direct-fired process furnaces
