Convert Per microkelvin to ppm per degree Fahrenheit
Convert Per microkelvin (1/μK) to ppm per degree Fahrenheit (ppm/°F) instantly and accurately.
Conversion Formula
ppm/°F = 1/μK × 555555555600
About Per microkelvin
The per microkelvin (1/μK) equals exactly 10⁶ /K. It is used in ultra-precision experiments probing anomalous thermal expansion extremely close to second-order phase transitions, such as the superfluid He-4 lambda point (2.1768 K) and magnetic phase boundaries in rare-earth compounds. 1 /μK = 10⁶ /K = 10¹² ppm/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
| Per microkelvin (1/μK) | ppm per degree Fahrenheit (ppm/°F) |
|---|---|
| 1 1/μK | 5.556 × 1011 ppm/°F |
| 2 1/μK | 1.111 × 1012 ppm/°F |
| 5 1/μK | 2.778 × 1012 ppm/°F |
| 10 1/μK | 5.556 × 1012 ppm/°F |
| 25 1/μK | 1.389 × 1013 ppm/°F |
| 50 1/μK | 2.778 × 1013 ppm/°F |
| 100 1/μK | 5.556 × 1013 ppm/°F |