Compatibility Rating
At 20°C (68°F)
Fair
Limited resistance - short-term exposure only
At 50°C (122°F)
Poor
Not recommended - significant degradation expected
Why is SS 304 rated this way to Phosgene?
SS 304 has limited resistance to Phosgene. Short-term exposure may be acceptable, but prolonged contact is not recommended.
⚠️ When NOT to use SS 304
Avoid using Stainless Steel 304 with chloride-rich environments (seawater, HCl) which cause pitting corrosion. Use 316 grade for chloride exposure.
Comparison Table — All Materials for Phosgene
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | NR | NR |
| LDPE | NR | NR |
| PP | NR | NR |
| PTFE | A | A |
| PVDF | C | C |
| FEP | A | A |
| ECTFE/ETFE | NR | NR |
| EPDM | C | C |
| Viton (FPM) | A | NR |
| NBR | C | NR |
| Silicone | NR | NR |
| SS 316 | C | D |
| SS 304 | C | D |
| Aluminium | C | C |
| PVC Rigid | NR | NR |
| PVC Flexible | NR | NR |
| PMP | NR | NR |
| Polystyrene | NR | NR |
| SAN | NR | NR |
| Polycarbonate | C | C |
| PETG | NR | NR |
| Acetal (POM) | B | B |
| Nylon (PA) | A | NR |
| Polysulfone | NR | NR |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
🌡️ Temperature Note
Maximum service temperature for this material is 800°C. Always verify compatibility at your specific operating conditions.
🔄 Better Alternative?
Consider: SS 316 for chloride environments. View all materials for Phosgene →
FAQ
Is Stainless Steel 304 resistant to Phosgene?
Stainless Steel 304 has Fair (C) resistance to Phosgene at 20°C. Limited resistance - short-term exposure only.