Convert Microinches per inch per degree Fahrenheit to Per microkelvin
Convert Microinches per inch per degree Fahrenheit (μin/(in·°F)) to Per microkelvin (1/μK) instantly and accurately.
Conversion Formula
1/μK = μin/(in·°F) × 1.800000000e-12
About Microinches per inch per degree Fahrenheit
The microinch per inch per degree Fahrenheit (μin/(in·°F)) equals exactly 9/5 × 10⁻⁶ /K = 1 ppm/°F. It is the native US CTE unit in ASTM E228 and ASTM E831 standards; most US material datasheets list CTE values in this unit. Steel: ≈6.7 μin/(in·°F); aluminium: ≈12.8 μin/(in·°F); titanium: ≈4.9 μin/(in·°F). 1 μin/(in·°F) = 1 ppm/°F.
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
| Microinches per inch per degree Fahrenheit (μin/(in·°F)) | Per microkelvin (1/μK) |
|---|---|
| 1 μin/(in·°F) | 1.8 × 10-12 1/μK |
| 2 μin/(in·°F) | 3.6 × 10-12 1/μK |
| 5 μin/(in·°F) | 9 × 10-12 1/μK |
| 10 μin/(in·°F) | 1.8 × 10-11 1/μK |
| 25 μin/(in·°F) | 4.5 × 10-11 1/μK |
| 50 μin/(in·°F) | 9 × 10-11 1/μK |
| 100 μin/(in·°F) | 1.8 × 10-10 1/μK |