Convert ppm per degree Fahrenheit to Per microkelvin
Convert ppm per degree Fahrenheit (ppm/°F) to Per microkelvin (1/μK) instantly and accurately.
Conversion Formula
1/μK = ppm/°F × 1.800000000e-12
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.
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.
Quick Reference Table
| ppm per degree Fahrenheit (ppm/°F) | Per microkelvin (1/μK) |
|---|---|
| 1 ppm/°F | 1.8 × 10-12 1/μK |
| 2 ppm/°F | 3.6 × 10-12 1/μK |
| 5 ppm/°F | 9 × 10-12 1/μK |
| 10 ppm/°F | 1.8 × 10-11 1/μK |
| 25 ppm/°F | 4.5 × 10-11 1/μK |
| 50 ppm/°F | 9 × 10-11 1/μK |
| 100 ppm/°F | 1.8 × 10-10 1/μK |