Comparison of Mold Alloy Properties

Alloy UNS No.DescriptionNominal Properties
Thermal ConductivityRockwell HardnessTensile Strength* (ksi) MPa
(Btu/ft 2/ft/hr/°F) at 68F
(W/m ·°K) at 293K
STEEL
S42000 Type 420 Stainless Steel 14.4 C 27-52 125-250
24.9863-1725
T20813 H-13 Tool Steel 14.4 C 38-54 206
24.91421
T51620 P-20 Tool Steel 22.0 C 28-50 146
38.11007
ALUMINUM
A96061 Type 6061 T6 96.5 B 60 40
166.9276
A97075 Type 7075 T6 75.0 B 88 67
129.8462
COPPER
C62400 Aluminum Bronze 36.0 B 92 105
62.3725
C17200 BeCu - High Hardness 60.6 C 41 190
104.81311
Cl 7200 BeCu - Moderate Hardness 75.7 C 30 170
131.01173
C17510 BeCu - High Conductivity 135.0 B 96 110
233.6759
C18200/18400 Cr - Hardened Copper 187.0 B 60-80 51-70
325.5352-483
C64700 NiSi - Hardened Copper 94.0 B 94 105
162.6725
C18000 NiSiCr - Hardened Copper 125.0 B 94 100
216.3690