Wheel Materials vs. Chemical Compatibility Guide
Casters and Wheels need to operate in a wide range of environments. Chemical exposure can greatly reduce the lifespan of certain materials so it's essential to pick the right wheel materials as compared to the chemical environments those wheels will be exposed to. Use our guide to see what wheels best fit your application. As always if you have any questions give us a call or contact us.
Wheel Materials vs. Chemical Compatibility Guide
Casters and Wheels need to operate in a wide range of environments. Chemical exposure can greatly reduce the lifespan of certain materials so it's essential to pick the right wheel materials as compared to the chemical environments those wheels will be exposed to. Use our guide to see what wheels best fit your application. As always if you have any questions give us a call or contact us.
Hydrofluoric Acid (50%)
HF
Hydrofluoric Acid 50% Caster Compatibility
Chemical Overview
Molecular Formula: HF
Physical Properties: Hydrofluoric acid 50% is a colorless, fuming liquid with a pungent odor. It has a boiling point of ~108°C (for 50% solution), a density of ~1.15 g/cm³ at 20°C, and is fully miscible with water. It is highly corrosive and reactive, especially with glass and metals. (Source: PubChem)
Industrial Applications
Hydrofluoric acid 50% is used in:
- Etching: In glass and semiconductor manufacturing.
- Metal Processing: For pickling stainless steel and titanium.
- Chemical Synthesis: In producing fluorides and organic compounds.
- Exposure Scenarios: Spills in etching facilities or chemical plants may contact caster wheels.
Wheel Material Compatibility Summary
Best Suited Materials (A/B Ratings): Polyolefin (A) is highly resistant to HF. Phenolic (B) offers moderate resistance.
Materials to Avoid (C/D Ratings): Avoid all metals (Ductile Cast Iron, Forged Steel) and elastomers (Rubber, Urethane) due to severe corrosion or degradation.
Wheel Compatibility Table
| Wheel Material | Interaction Description | Rating |
|---|---|---|
| Ductile Cast Iron | Severe corrosion from HF; rapid failure. | D |
| Elastomer | Degrades rapidly in HF. | D |
| Forged Steel | Corrodes severely in HF. | D |
| Neoprene/Nylon Glass Core | Neoprene degrades; nylon has poor resistance. | D |
| Nylon | Degrades in strong HF solutions. | D |
| Nylon Glass Filled | Similar to nylon; poor resistance. | D |
| Phenolic | Moderate resistance; some degradation. | B |
| Polyolefin | Excellent resistance; unaffected by HF. | A |
| Polyurethane on Aluminum Core | Polyurethane and aluminum degrade in HF. | D |
| Polyurethane on Iron Core | Polyurethane and iron corrode rapidly. | D |
| Rubber | Severe degradation from HF. | D |
| Solid Elastomer | Rapid degradation in HF. | D |
| Thermoplastic Rubber | Poor resistance; degrades in HF. | D |
| Urethane | Degrades rapidly in HF. | D |
| V-Grooved Iron | Severe corrosion from HF. | D |
Conclusion
Hydrofluoric acid 50% is highly corrosive, making Polyolefin wheels (A rating) the only reliable choice. Avoid all metals (Ductile Cast Iron, Forged Steel) and elastomers (Rubber, Urethane) due to severe corrosion and degradation. For assistance, contact CasterTech.