Convert Per kelvin to Microinches per inch per degree Fahrenheit
Convert Per kelvin (1/K) to Microinches per inch per degree Fahrenheit (μin/(in·°F)) instantly and accurately.
Conversion Formula
μin/(in·°F) = 1/K × 555555.5556
About Per kelvin
The per kelvin (1/K = K⁻¹) is the SI unit for linear thermal expansion coefficient (α = (1/L) dL/dT). Used in NIST databases, FEA material cards, and thermodynamics textbooks. Liquid mercury: ≈6.1 × 10⁻⁵ /K; aluminium: ≈2.3 × 10⁻⁵ /K; fused silica: ≈5.5 × 10⁻⁷ /K. 1 /K = 10⁶ ppm/K = 1/°C.
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.
Quick Reference Table
| Per kelvin (1/K) | Microinches per inch per degree Fahrenheit (μin/(in·°F)) |
|---|---|
| 1 1/K | 555556 μin/(in·°F) |
| 2 1/K | 1111110 μin/(in·°F) |
| 5 1/K | 2777780 μin/(in·°F) |
| 10 1/K | 5555560 μin/(in·°F) |
| 25 1/K | 13888900 μin/(in·°F) |
| 50 1/K | 27777800 μin/(in·°F) |
| 100 1/K | 55555600 μin/(in·°F) |