Convert Microinches per inch per degree Fahrenheit to Per degree Celsius
Convert Microinches per inch per degree Fahrenheit (μin/(in·°F)) to Per degree Celsius (1/°C) instantly and accurately.
Conversion Formula
1/°C = μin/(in·°F) × 1.800000000e-6
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 degree Celsius
The per degree Celsius (1/°C = °C⁻¹) equals exactly 1/K since temperature intervals 1 °C = 1 K (exact). Common in European and ISO standards, chemistry textbooks, and physics literature as an alternative notation for the SI unit 1/K. A material with α = 12 × 10⁻⁶ /K is identically expressed as 12 × 10⁻⁶ /°C. 1 /°C = 1 /K = 10⁶ ppm/K.
Quick Reference Table
| Microinches per inch per degree Fahrenheit (μin/(in·°F)) | Per degree Celsius (1/°C) |
|---|---|
| 1 μin/(in·°F) | 1.8 × 10-6 1/°C |
| 2 μin/(in·°F) | 3.6 × 10-6 1/°C |
| 5 μin/(in·°F) | 9 × 10-6 1/°C |
| 10 μin/(in·°F) | 1.8 × 10-5 1/°C |
| 25 μin/(in·°F) | 4.5 × 10-5 1/°C |
| 50 μin/(in·°F) | 9 × 10-5 1/°C |
| 100 μin/(in·°F) | 0.00018 1/°C |