1.4878 vs 1.4571 Stainless Steel
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What is 1.4571 stainless steel?
1.4571 / AISI 316 Ti is an austenitic chromium-nickel stainless steel, stabilized with titanium. It offers good corrosion resistance to low concentrations of hydrochloric and organic acids. The titanium addition improves its resistance to intergranular corrosion, especially in welded or thick sections. It can be processed into various practical product forms, including sheets, coils, tubes, bars, and wires.
What is 1.4878 material?
1.4878 is the European (EN) designation for a heat-resistant, austenitic stainless steel, also known as AISI 321H or X8CrNiTi18-10, that contains titanium for added high-temperature strength and creep resistance. It offers good mechanical properties and corrosion resistance for applications with prolonged exposure to high temperatures (up to 850°C or 1560°F), such as components in furnaces, silencers, and exhaust systems.
1.4878 vs 1.4571 Stainless Steel:Key differences
| Feature | EN 1.4878 (AISI 321H) | EN 1.4571 (AISI 316Ti) |
|---|---|---|
| Primary Use | High-temperature applications, high creep resistance | General corrosion resistance, corrosion resistance superior to 316L |
| Key Elements | Titanium stabilization (18% Chromium, 10% Nickel) | Molybdenum and Titanium stabilization (17% Chromium, 12% Nickel, 2% Molybdenum) |
| Corrosion Resistance | Good corrosion resistance in natural environments | Excellent corrosion resistance, especially in chloride environments |
| Heat Resistance | Higher maximum operating temperature | High temperature resistance up to around 870 °C |
| Creep Resistance | Superior creep resistance at higher temperatures | Lower creep resistance compared to 1.4878 |
1.4878 vs 1.4571 Stainless Steel : Chemical Composition
| Element | 1.4878 Heat-resistant Grade | 1.4571 (X6CrNiMoTi17-12-2 / AISI 316Ti) |
|---|---|---|
| C | 0.05–0.12 | ≤ 0.08 |
| Cr | 20–26 | 16.5–18.5 |
| Ni | 10–12 | 10.5–13.5 |
| Mo | - | 2.0–2.5 |
| Si | 1.0–2.5 | ≤ 1.0 |
| Mn | ≤ 1.5 | ≤ 2.0 |
| Ti | - | 0.3–0.7 |
| Al | 0.3–0.8 | - |
| P / S | ≤ 0.04 / 0.03 | ≤ 0.045 / 0.03 |
1.4878 vs 1.4571 Stainless Steel :Mechanical Properties
| Property | 1.4878 | 1.4571 |
|---|---|---|
| Density | 7.75 g/cm³ | 8.0 g/cm³ |
| Tensile Strength (Rm) | 550–750 MPa | 500–700 MPa |
| Yield Strength (Rp0.2) | 280–350 MPa | 200–300 MPa |
| Elongation (A5) | 30–40% | 40–55% |
| Hardness | ≤ 220 HB | ≤ 210 HB |
| Max Continuous Service Temp | Up to 1100°C | Up to 600°C |
| Pitting Resistance (PREN) | ~17–18 | ~23–24 |
Is 1.4878 stainless steel a heat-resistant stainless steel?
1.4878 refers to heat-resistant stainless steel, specifically EN 1.4878 (AISI 321H). It maintains good mechanical properties at temperatures up to 850°C (1560°F) and is commonly used in high-temperature applications such as exhaust systems and furnace components. Its maximum operating temperature is approximately 950°C, but it performs best when used for extended periods below 850°C.
What material is 1.4828 equivalent to?
AISI 309 is a heat-resistant austenitic chromium-nickel steel, also known as 1.4828, BS 309S24 and X15CrNiSi20-12. It is characterised by excellent heat resistance and scale resistance up to approx. 1000 °C.
What are the differences between 1.4878 and 1.4828 stainless steel?
The main difference is that 1.4828 (AISI 309) is a heat-resistant austenitic stainless steel suitable for applications up to 1000°C, possessing good high-temperature strength and oxidation resistance; while 1.4878 (AISI 321H) is a titanium-stabilized austenitic stainless steel primarily used to improve its resistance to intergranular corrosion in the temperature range of 425-900°C. 1.4828 is a more general-purpose high-temperature steel grade, while 1.4878 is specifically designed for applications involving welding or where sensitization is likely to occur, such as heat exchangers and boilers.
In addition to 1.4878 stainless steel, GNEE has a large inventory of best-selling products for you to choose from. 1.4301, 1.4307, 1.4401, 1.4404, and 1.4541 are available and can be processed into various practical product forms, including plates, coils, tubes, bars, and wires. If you are interested in 1.4408 stainless steel or other products, please feel free to send an email to info@gneestainless.com. We are happy to assist you.
