Compatibility Rating
At 20°C (68°F)
Excellent
Excellent resistance - recommended for continuous use
At 50°C (122°F)
Excellent
Excellent resistance - recommended for continuous use
Why is SS 304 resistant to Methanol?
SS 304 shows excellent resistance to Methanol due to its chromium content (18%) forming a passive oxide layer resistant to many corrosive environments.
⚠️ 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 Methanol
| Material | 20°C | 50°C |
|---|---|---|
| HDPE | A | A |
| LDPE | A | A |
| PP | A | A |
| PTFE | A | A |
| PVDF | A | A |
| FEP | A | A |
| ECTFE/ETFE | A | A |
| EPDM | A | NR |
| Viton (FPM) | C | D |
| NBR | C | C |
| Silicone | NR | NR |
| SS 316 | A | A |
| SS 304 | A | A |
| Aluminium | A | NR |
| PVC Rigid | A | C |
| PVC Flexible | C | C |
| PMP | A | A |
| Polystyrene | C | D |
| SAN | C | D |
| Polycarbonate | D | D |
| PETG | A | NR |
| Acetal (POM) | A | A |
| Nylon (PA) | B | NR |
| Polysulfone | C | C |
A=Excellent · B=Good · C=Fair · D=Poor · NR=No Data
FAQ
Is Stainless Steel 304 resistant to Methanol?
Stainless Steel 304 has Excellent (A) resistance to Methanol at 20°C. Excellent resistance - recommended for continuous use.
Can I store Methanol in Stainless Steel 304 containers?
Yes, Stainless Steel 304 is rated A (Excellent) for Methanol.