Convert Microns per metre per degree Celsius to Millimetres per metre per kelvin
Convert Microns per metre per degree Celsius (μm/(m·°C)) to Millimetres per metre per kelvin (mm/(m·K)) instantly and accurately.
Conversion Formula
mm/(m·K) = μm/(m·°C) × 0.001
About Microns per metre per degree Celsius
The micrometre per metre per degree Celsius (μm/(m·°C)) equals exactly 10⁻⁶ /K, since temperature intervals 1 °C = 1 K (exact). It is the standard CTE notation in European engineering datasheets, ISO material standards, and many textbooks. Numerically identical to ppm/K. Aluminium: 23.1 μm/(m·°C); steel: ≈12 μm/(m·°C). 1 μm/(m·°C) = 1 ppm/K = 10⁻⁶ /K.
About Millimetres per metre per kelvin
The mm/(m·K) equals exactly 10⁻³ /K = 1000 ppm/K and is used in structural and civil engineering for bridge girder and pipeline thermal-expansion calculations. Steel at 0.012 mm/(m·K) expands 12 mm per 100 m track per 10 K rise. Polymers: 0.07-0.20 mm/(m·K). 1 mm/(m·K) = 10⁻³ /K = 1000 ppm/K.
Quick Reference Table
| Microns per metre per degree Celsius (μm/(m·°C)) | Millimetres per metre per kelvin (mm/(m·K)) |
|---|---|
| 1 μm/(m·°C) | 0.001 mm/(m·K) |
| 2 μm/(m·°C) | 0.002 mm/(m·K) |
| 5 μm/(m·°C) | 0.005 mm/(m·K) |
| 10 μm/(m·°C) | 0.01 mm/(m·K) |
| 25 μm/(m·°C) | 0.025 mm/(m·K) |
| 50 μm/(m·°C) | 0.05 mm/(m·K) |
| 100 μm/(m·°C) | 0.1 mm/(m·K) |