Temperature Resistance of Metal Fillers
Briefly describe the temperature resistance properties of metal fillers.
Temperature Resistance of Metal Fillers
The temperature resistance limits of different metals vary significantly, directly determining the upper limit of the packing material's operation.
Temperature Resistance Ranges of Different Materials
Material | Recommended Operating Temperature | Maximum Temperature |
Carbon Steel | 200-300℃ | 400℃ |
304 Stainless Steel | 400-500℃ | 600℃ |
316L Stainless Steel | 500-550℃ | 650℃ |
321 Stainless Steel | 500-600℃ | 700℃ |
Titanium | 200-250℃ | 350℃ |
Hastelloy | 450-600℃ | 700℃ |
The Effects of High Temperature on Performance
Strength Reduction: Stainless steel strength decreases by more than 50% at 500℃.
Oxidation Corrosion: Carbon steel develops an oxide scale above 250℃, while stainless steel forms an oxide film above 400℃.
Creep Deformation: Slow deformation under long-term high temperature and pressure leads to the settling of the filler layer.
Embrygmus Risk: Stainless steel is sensitized and prone to intergranular corrosion at 450-850℃; titanium becomes embrittled after absorbing hydrogen above 300℃.
Material Selection Recommendations
Operating Temperature | Recommended Material |
<200℃ | Carbon steel or stainless steel |
200-300℃ | 304 or 316L |
300-400℃ | 316L or 321 |
400-500℃ | 321 or Hastelloy |
>500℃ | Use ceramic filler |
Compared with ceramic fillers
Comparison | Metal Packing | Ceramic Packing |
Operating Temperature | ≤600℃ | >800℃ |
High-Temperature Strength | Significantly Decreases | Almost Unchanged |
Oxidation Risk | Yes | No |
Ceramic packings are more reliable at high temperatures (>500℃) or in strong oxidizing atmospheres.
Summary
The temperature resistance of metal packings can be summarized as follows: carbon steel is limited to 200℃, stainless steel can reach 500℃, and ceramics are required for higher temperatures. We are a metal packing supplier in China. For more information, please contact us via email at annayu@169chem.net or WhatsApp at +8618909016373.