At One Place

Materials

Density, melting point, strength and conductivity for 110 materials — metals, plastics, woods, ceramics and stone. These figures are the most stable reference data there is: none of them have changed in a century.

Density, lightest to heaviest

Water is 1,000 kg/m³ and seawater about 1,025. Density alone decides floating.
Material Density (kg/m³) vs water Floats
air 1.2 0.00× Yes
expanded polystyrene foam 20 0.02× Yes
rigid polyurethane foam 40 0.04× Yes
EVA foam 100 0.10× Yes
balsa 160 0.16× Yes
corrugated cardboard 160 0.16× Yes
cork 200 0.20× Yes
western red cedar 370 0.37× Yes
spruce 430 0.43× Yes
pine 500 0.50× Yes
Douglas fir 530 0.53× Yes
mahogany 590 0.59× Yes
plywood 600 0.60× Yes
black walnut 610 0.61× Yes
OSB 640 0.64× Yes
particleboard 650 0.65× Yes
teak 655 0.66× Yes
ash 675 0.68× Yes
birch 690 0.69× Yes
bamboo 700 0.70× Yes
gypsum board (drywall) 700 0.70× Yes
red oak 700 0.70× Yes
hard maple 705 0.70× Yes
beech 720 0.72× Yes
MDF 750 0.75× Yes
white oak 755 0.76× Yes
paper 800 0.80× Yes
leather 900 0.90× Yes
polypropylene 905 0.91× Yes
ice 917 0.92× Yes
LDPE 920 0.92× Yes
natural rubber 950 0.95× Yes
HDPE 955 0.95× Yes
ebony 1,000 1.00× No
water 1,000 1.00× No
ABS 1,050 1.05× No
polystyrene 1,050 1.05× No
plaster 1,100 1.10× No
nylon 6 1,140 1.14× No
nylon 66 1,140 1.14× No
epoxy resin 1,150 1.15× No
acrylic (PMMA) 1,180 1.18× No
polycarbonate 1,200 1.20× No
lignum vitae 1,230 1.23× No
PLA 1,240 1.24× No
flexible PVC 1,250 1.25× No
silicone rubber 1,250 1.25× No
PETG 1,270 1.27× No
neoprene 1,300 1.30× No
rigid PVC 1,400 1.40× No
POM (acetal / Delrin) 1,410 1.41× No
aramid fibre (Kevlar) 1,440 1.44× No
woven carbon fibre composite 1,550 1.55× No
unidirectional carbon fibre composite 1,600 1.60× No
magnesium 1,738 1.74× No
brick 1,900 1.90× No
fibreglass (GRP) 1,900 1.90× No
fired clay (terracotta) 1,900 1.90× No
PTFE 2,170 2.17× No
fused quartz 2,200 2.20× No
graphite 2,200 2.20× No
borosilicate glass 2,230 2.23× No
sandstone 2,300 2.30× No
asphalt (hot-mix) 2,350 2.35× No
concrete 2,400 2.40× No
porcelain 2,400 2.40× No
limestone 2,450 2.45× No
reinforced concrete 2,500 2.50× No
soda-lime glass 2,500 2.50× No
tempered glass 2,500 2.50× No
quartz 2,650 2.65× No
aluminum 2,700 2.70× No
aluminum 6061 2,700 2.70× No
granite 2,700 2.70× No
marble 2,700 2.70× No
slate 2,750 2.75× No
aluminum 7075 2,810 2.81× No
silicon carbide 3,210 3.21× No
diamond 3,515 3.52× No
alumina 3,900 3.90× No
Ti-6Al-4V titanium alloy 4,430 4.43× No
titanium 4,506 4.51× No
ductile iron 7,100 7.10× No
zinc 7,140 7.14× No
gray cast iron 7,150 7.15× No
chromium 7,190 7.19× No
pewter 7,300 7.30× No
tin 7,310 7.31× No
lead-free solder (SAC305) 7,380 7.38× No
wrought iron 7,700 7.70× No
tool steel 7,800 7.80× No
high-carbon steel 7,850 7.85× No
mild steel 7,850 7.85× No
iron 7,874 7.87× No
stainless steel 304 8,000 8.00× No
stainless steel 316 8,000 8.00× No
Inconel 718 8,190 8.19× No
brass 8,500 8.50× No
tin-lead solder (60/40) 8,520 8.52× No
bronze 8,800 8.80× No
Monel 400 8,800 8.80× No
nickel 8,908 8.91× No
copper 8,960 8.96× No
silver 10,490 10.49× No
lead 11,340 11.34× No
mercury 13,534 13.53× No
tungsten carbide 14,900 14.90× No
tungsten 19,250 19.25× No
gold 19,300 19.30× No
platinum 21,450 21.45× No

Pure metal

Alloy

Plastic and rubber

Wood

Stone and mineral

Ceramic and masonry

Glass

Composite

Liquid

Other

Common questions

What is the densest material here?
Platinum, at 21,450 kg/m³.
Why are so many densities given as ranges?
Because they genuinely vary. Wood density changes by a factor of two with species and moisture, concrete varies with mix, and plastics vary with fillers. A single number would be a fiction.
Why do some materials have no melting point listed?
Because they decompose rather than melt. Wood, paper, thermosets and several ceramics char or sublime, so a melting figure would be meaningless.