Metal Foams: A Design Guide

Table 4.1
(a) Ranges a for mechanical properties of commercial b metfoams
Properties of metal foams 43
Property, (units), Cymat Alulight Alporas ERG Inco
symbol
Material Al – SiC Al Al Al Ni
Relative density 0.02–0.2 0.1–0.35 0.08–0.1 0.05–0.1 0.03–0.04
( ), / s
Structure ( ) Closed cell Closed cell Closed cell Open cell Open cell
Density (Mg/m 3 ), 0.07–0.56 0.3–1.0 0.2–0.25 0.16–0.25 0.26–0.37
Young’s modulus 0.02–2.0 1.7–12 0.4–1.0 0.06–0.3 0.4–1.0
(GPa), E
Shear modulus 0.001–1.0 0.6–5.2 0.3–0.35 0.02–0.1 0.17–0.37
(GPa), G
Bulk modulus 0.02–3.2 1.8–13.0 0.9–1.2 0.06–0.3 0.4–1.0
(GPa), K
Flexural modulus 0.03–3.3 1.7–12.0 0.9–1.2 0.06–0.3 0.4–1.0
(GPa), Ef
Poisson’s ratio ( ), 0.31 – 0.34 0.31 – 0.34 0.31 – 0.34 0.31 – 0.34 0.31 – 0.34
Comp. strength 0.04–7.0 1.9–14.0 1.3–1.7 0.9–3.0 0.6–1.1
(MPa), c
Tensile elastic limit 0.04–7.0 2.0–20 1.6–1.8 0.9–2.7 0.6–1.1
(MPa), y
Tensile strength 0.05–8.5 2.2–30 1.6–1.9 1.9–3.5 1.0–2.4
(MPa), t
MOR (MPa), MOR 0.04–7.2 1.9–25 1.8–1.9 0.9–2.9 0.6–1.1
Endurance limit 0.02–3.6 0.95–13 0 9–1.0 0.45–1.5 0.3–0.6
(MPa), c e
Densification strain 0.6–0.9 0.4–0.8 0.7–0.82 0.8–0.9 0.9–0.94
( ), εD
Tensile ductility 0.01–0.02 0.002–0.04 0.01–0.06 0.1–0.2 0.03–0.1
( ), εf
Loss coefficient 0.4–1.2 0.3–0.5 0.9–1.0 0.3–0.5 1.0–2.0
(%), c
Hardness (MPa), H 0.05–10 2.4–35 2.0–2.2 2.0–3.5 0.6–1.0
Fr. tough. 0.03–0.5 0.3–1.6 0.1–0.9 0.1–0.28 0.6–1.0
⊲MPa.m 1/2 ⊳, K c IC