1.4878 material equivalent
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What is 1.4878 steel number?
Steel number 1.4878 refers to the EN standard designation for a heat-resistant austenitic stainless steel, also known by other designations like AISI 321H or UNS S32109. It is characterized by good high-temperature strength, corrosion resistance, and weldability, making it suitable for furnace components, automotive parts, and other applications involving demanding heat exposure.
| EU EN |
USA - |
Japan JIS |
France AFNOR |
England BS |
Italy UNI |
Sweden SS |
Russia GOST |
Inter ISO |
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| X8CrNiTi18-10 |
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What is the composition of 1.4878 SS?
Chemical composition % of steel X8CrNiTi18-10 (1.4878): EN 10095-1999
| 5 x % C < Ti > 0.80 |
| C | Si | Mn | Ni | P | S | Cr | Ti |
| max 0.1 | max 1 | max 2 | 9 - 12 | max 0.045 | max 0.015 | 17 - 19 | max 0.8 |
Mechanical properties(at room temperature in annealed condition)
| Product Form | ||||
|---|---|---|---|---|
| C, H, P | L | |||
| Thickness a or diamter d (mm) | a ≤ 12 | d ≤ 25 | ||
| Hardness HB max. 1) 2) 3) | 215 | |||
| Proof Strength3) | Rp0.2 N/mm2 | 190 | ||
| Rp1.0 N/mm2 | 230 | |||
| Tensile Strength | Rm N/mm2 | 500 - 720 | ||
| Elongation min. in % | Long Products3) | 401) | ||
| Flat Products | 0.5 ≤ a/d < 3 | 404)5) | ||
| 3 ≤ a/d | 404)5) | |||
Creep Properties (estimated average values about the long-term behaviour at elevated temperature*)
| 1% Elongation1) for | Rupture2) for | ||||
|---|---|---|---|---|---|
| Temperature °C | 1,000 h N/mm2 | 10,000 h N/mm2 | 1,000 h N/mm2 | 10,000 h N/mm2 | 100,000 h N/mm2 |
| 600 | 110 | 85 | 200 | 142 | 65 |
| 700 | 45 | 30 | 88 | 48 | 22 |
| 800 | 15 | 10 | 30 | 15 | 10 |
1.4878 stainless steel heat resistance
1.4878, X8CrNiTi18-10, AISI 321H - heat-resistant steel
Classified as heat-resistant steel according to EN 10095, it can operate up to 850℃ in a neutral environment. The material also works relatively well at high temperatures in the environment of gases containing Hydrogen Sulphide.
Differences between 1.4878 and 1.4541 stainless steel
The main difference is that 1.4878 (AISI 321H) is a heat-resistant version of 1.4541 (AISI 321), with a higher carbon and titanium content and superior high-temperature strength, allowing it to operate at higher temperatures (up to 850°C) compared to 1.4541. Both are titanium-stabilized austenitic stainless steels with good corrosion resistance, but 1.4878 is specifically designed for sustained use in elevated temperature environments like high-temperature structural applications and equipment.
If you have a project requirement for 1.4541 or 1.4878 stainless steel rods, we welcome your order. GNEE maintains a large inventory of popular products for you to choose from. We process these rods into a variety of practical product forms, including sheet, coil, tube, bar, and wire. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.
