At a glance
Based on the row for 100 %, 20 °C.
- Rated A, very good resistance
- PTFE, HDPE, PP, PVDF, EPDM, Viton (FPM), NBR, SS 316, SS 304, Aluminium, LDPE, FEP, ECTFE/ETFE, Nylon (PA), Acetal (POM), Polycarbonate, PETG (17)
- Rated B, good resistance
- PVC Rigid (1)
- Rated C, limited resistance
- SAN (1)
- Rated D, not resistant
- PVC Flexible (1)
- No data in the source
- Silicone, Polystyrene, Polysulfone, PMP
Based on the row for 100 %, 20 °C.
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
No material with a rating at both temperatures changes grade between 20 °C and 50 °C.
Substance
- CAS number
- 74-86-2
- Formula
- C2H2
- Hazard symbols in the source
- F+ (extremely flammable) (pre-GHS European symbols; check the current safety data sheet)
- Flammable
- yes
- Concentrations listed
- 100 %
- Name in the source (German)
- Acetylen
Resistance table: Acetylene, 100 %
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| HDPE | A | – | |
| LDPE | A | – | |
| PP | A | – | |
| PVC Rigid | B | – | |
| PVC Flexible | D | D | |
| SAN | C | – | |
| Polycarbonate | A | – | |
| PETG | A | A | |
| Acetal (POM) | A | – | |
| Nylon (PA) | A | – | |
| Fluoropolymers | |||
| PTFE | A | – | |
| FEP | A | A | |
| PVDF | A* | – | |
| ECTFE/ETFE | A* | – | |
| Elastomers | |||
| EPDM | A | – | |
| Viton (FPM) | A | – | |
| NBR | A | – | |
| Metals | |||
| SS 316 | A* | – | |
| SS 304 | A* | – | |
| Aluminium | A* | – | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: PMP, Polystyrene, Polysulfone, Silicone
Rating scale
- A very good resistance
- B good resistance
- C limited resistance
- D not resistant
- – no data
- K no general statement possible
A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.
Frequently Asked Questions
Which materials resist Acetylene at high concentrations?
The materials with an A rating (resistant) for Acetylene at 20 °C are: PTFE, HDPE, PP, PVDF, EPDM, Viton (FPM), NBR, SS 316. These can generally be used in direct contact.
Which materials should be avoided with Acetylene?
Materials rated D (not resistant) for Acetylene are: PVC Flexible. These should not be used in contact with Acetylene.
Does temperature affect chemical resistance to Acetylene?
For Acetylene, all tested materials maintain the same rating at both 20 °C and 50 °C.
Is PTFE safe for Acetylene?
PTFE is rated A for Acetylene at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.
About this data
The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.
A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.
Chemicals with a similar resistance profile
Same 20 °C rating on the share of materials shown.