[Updated 2019-1-21] Complete Compendium of Modded Materials

My understanding is that what's in Crystals.txt should be used only for lasers; if you need coolant - then first patch and then use the other one instead.

Why patching? There's a catch: Aluminum changes its density as well as thermal conductivity with temperature, and the difference is huge, according to Thermophysical Properties of Liquid Aluminum by Leitners, Schmon, Aziz, & Pottlacher (2017).

Patch at what temperature? Minimum is 933.47 K, and at that crossing conductivity jumps down from 185.5 to 89.3 W/m K, and density decreases momentarily from 2514 to 2391 kg/m³ at liquefaction. So clearly that's unusable in coolant pipes, and we need to go hotter. Pump-wise it still seems to be sensible to put a density almost as high as possible in liquid phase (so it can masticate), but radiator- and thermocoupler-wise it might be better to put conductivity in the middle of as-high-as-output-loop-goes and lowest-safe-liquid, no?..

I'll stick to this for now:
Material _comment
RefractiveIndex https://sci-hub.tw/10.1007/s11661-017-4053-6
RefractiveIndex 600 K 2662 ? ?
RefractiveIndex 750 K 2609 197.8 6.325
RefractiveIndex 900 K 2534 187.7 6.185
RefractiveIndex 933.47 K (solid^) 2514 185.5 (diffusivity-5)
RefractiveIndex 933.47 K (liquid) 2391 89.3 3.309
RefractiveIndex 950 K 2386 89.9 3.341
RefractiveIndex 1000 K 2371 91.8 3.434
RefractiveIndex 1050 K 2356 93.6 3.525
RefractiveIndex 1100 K 2341 95.3 3.612
RefractiveIndex 1150 K 2326 96.9 3.696
RefractiveIndex 1200 K 2311 98.4 3.777
RefractiveIndex 1250 K 2296 99.8 3.855
RefractiveIndex 1300 K 2281 101.0 3.929
RefractiveIndex 1350 K 2266 102.2 4.001
RefractiveIndex 1400 K 2251 103.2 4.069
RefractiveIndex 1450 K 2236 104.2 4.134
RefractiveIndex 1500 K 2222 105.1 4.196
RefractiveIndex 1550 K 2207 ? ?
RefractiveIndex 1600 K 2192 ? ?
RefractiveIndex 1650 K 2177 ? ?

Material Liquid Aluminum_mod
Elements Al
ElementCount 1
Density_kg__m3 2391
EnthalpyOfFormation_kJ__mol 10.56
SpecificHeat_J__kg_K 1127
MeltingPoint_K 933.47
BoilingPoint_K 2743
ThermalConductivity_W__m_K 98.8
Viscosity_Pa_s 1.3e-3
RefractiveIndex Aluminum

Viscosity probably needs to be checked, too, because I'm unsure if it's right here.
Comments, suggestions?

p.s. too bad the game doesn't model neither liquid heat pipes nor phase-change cooling a.k.a "vapour chambers"...