Convert Percent per degree Fahrenheit to ppm per degree Fahrenheit
Convert Percent per degree Fahrenheit (%/°F) to ppm per degree Fahrenheit (ppm/°F) instantly and accurately.
Conversion Formula
ppm/°F = %/°F × 10000
About Percent per degree Fahrenheit
The %/°F equals 9/5 × 10⁻² /K ≈ 0.018 /K, the Fahrenheit percent-expansion unit used in US polymer and rubber industry specifications. PTFE: ≈0.0075 %/°F; HDPE: ≈0.0083 %/°F; silicone rubber: ≈0.056 %/°F. 1 %/°F = 9/5 × 10⁻² /K ≈1.8 %/K.
About ppm per degree Fahrenheit
The ppm/°F (= μin/(in·°F) exactly) equals 9/5 × 10⁻⁶ /K ≈1.8 × 10⁻⁶ /K and is the dominant CTE unit in US ASTM standards, ASME piping codes, and mechanical engineering handbooks. Steel ≈6.7 ppm/°F; aluminium ≈12.8 ppm/°F; copper ≈9.4 ppm/°F. 1 ppm/°F = 9/5 × 10⁻⁶ /K.
Quick Reference Table
| Percent per degree Fahrenheit (%/°F) | ppm per degree Fahrenheit (ppm/°F) |
|---|---|
| 1 %/°F | 10000 ppm/°F |
| 2 %/°F | 20000 ppm/°F |
| 5 %/°F | 50000 ppm/°F |
| 10 %/°F | 100000 ppm/°F |
| 25 %/°F | 250000 ppm/°F |
| 50 %/°F | 500000 ppm/°F |
| 100 %/°F | 1000000 ppm/°F |