When comparing 1.4432 vs. 1.4571 stainless steel tubes, the key question for buyers is not strength-but application suitability.Although both grades belong to the molybdenum-alloyed austenitic stainless steel tube family, their optimal applications are clearly different.
This guide explains the applications of 1.4432 and 1.4571 stainless steel tubes, helping procurement professionals select the right tube material for corrosion, temperature, and service conditions.
Where can 1.4432 stainless steel tubes be used?
1.4432 (X2CrNiMo17-12-3) stainless steel tubes are commonly used in highly corrosive environments, such as chemical processing, marine, and paper industries, due to their superior resistance to chloride-induced pitting compared to 316L. They are ideal for heat exchangers, pipelines, tanks, pharmaceutical equipment, and food processing applications.
What are the applications of 1.4571 stainless steel tubes?
Exploring the Versatility of Stainless Steel Tubes1.4571 (AISI 316Ti) stainless steel tubes are used in high-corrosion, high-temperature, and welded environments, specifically within the chemical, petrochemical, food processing, pharmaceutical, and shipbuilding industries. They are ideal for process lines, heat exchangers, and exhaust systems due to their high molybdenum content and titanium stabilization.
What is 1.4571 stainless steel equivalent to?
1.4571 stainless steel (X6CrNiMoTi17-12-2) is primarily equivalent to AISI 316Ti (UNS S31635). It is a titanium-stabilized version of the 316 molybdenum-bearing austenitic stainless steel, widely used in Europe (EN standard) for its excellent corrosion resistance and high-temperature stability, with SUS 316Ti as the Japanese (JIS) equivalent.
Overview: 1.4432 vs. 1.4571 Stainless Steel Tubes
| Grade | Common Name | Key Design Focus |
|---|---|---|
| 1.4432 | Enhanced 316L tube | Superior corrosion resistance |
| 1.4571 | 316Ti tube | High-temperature stability |
Chemical Composition of 1.4432 vs. 1.4571 Stainless Steel pipe
| Element (%) | EN 1.4432 | EN 1.4571 |
|---|---|---|
| Carbon (C) | ≤ 0.03 | ≤ 0.08 |
| Chromium (Cr) | 16.5 – 18.5 | 16.5 – 18.5 |
| Nickel (Ni) | 10.0 – 13.0 | 10.5 – 13.5 |
| Molybdenum (Mo) | 2.5 – 3.0 | 2.0 – 2.5 |
| Titanium (Ti) | - | ≥ 5 × C |
| Nitrogen (N) | ≤ 0.11 | ≤ 0.10 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 |
Mechanical Properties of 1.4432 vs. 1.4571 Stainless Steel
| Property | EN 1.4432 | EN 1.4571 |
|---|---|---|
| Yield Strength (Rp0.2) | ≥ 200 MPa | ≥ 220 MPa |
| Tensile Strength (Rm) | 500 – 700 MPa | 500 – 750 MPa |
| Elongation (A5) | ≥ 40 % | ≥ 40 % |
| Hardness | ≤ 215 HB | ≤ 220 HB |
| Impact Toughness | Excellent | Excellent |
Physical Properties of 1.4432 vs. 1.4571 Stainless Steel round Tubes
| Property | EN 1.4432 | EN 1.4571 |
|---|---|---|
| Density | 8.0 g/cm³ | 8.0 g/cm³ |
| Melting Point | 1370 – 1400 °C | 1370 – 1400 °C |
| Thermal Conductivity (at 20°C) | 15.0 W/m·K | 15.0 W/m·K |
| Coefficient of Thermal Expansion (20–100°C) | 16.0 µm/m·K | 16.0 µm/m·K |
| Electrical Resistivity (at 20°C) | 0.74 µΩ·m | 0.75 µΩ·m |
| Specific Heat Capacity (at 20°C) | 500 J/kg·K | 500 J/kg·K |
What is the difference between 1.4432 and 1.4571 stainless steel tubes?
1.4432 (316L) and 1.4571 (316Ti) are both acid-resistant austenitic stainless steels with similar corrosion resistance, but 1.4571 is stabilized with titanium for better high-temperature strength (above 600°C). 1.4432 is a low-carbon, molybdenum-enhanced steel offering superior corrosion resistance, cold formability, and pitting resistance, making it ideal for welded components.
What is the difference between 1.4571 and 316L stainless steel?
1.4571 (316Ti) and 316L (1.4404) are both acid-resistant austenitic stainless steels with similar base compositions, but 1.4571 contains added titanium for high-temperature stability (up to 550°C), while 316L relies on low carbon content (≤0.03%) to prevent sensitization during welding. 1.4571 is preferred for thick-section welding and high-temperature environments, whereas 316L is more common for general corrosion resistance and better formability.
who choose us?
If you have project requirements for 1.4401, 1.4404, or 1.4571 stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. These materials can be processed into various practical product forms, including plates, coils, tubes, bars, and wires. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.