EN AW-6060 T66 vs EN AW-6061 T4

EN AW-6061 T4 and EN AW-6060 T66 are about equally stiff. Their densities are about the same. Per unit mass they are about equally stiff (25.93 and 25.93 MJ/kg). Strength: f_o = 160 MPa for EN AW-6060 T66, f_o = 110 MPa for EN AW-6061 T4.

EN AW-6060 T66 EN 1999-1-1 · t ≤ 3 mm · EP, ET, ER/B EN AW-6061 T4 EN 1999-1-1 · t ≤ 25 mm · EP, ET, ER/B

Side by side

ratio = EN AW-6061 T4 / EN AW-6060 T66 · log scale

Property	EN AW-6060 T66	EN AW-6061 T4	Unit	Ratio
E Young's modulus	70	70	GPa	1×
G Shear modulus	27	27	GPa	1×
ν Poisson's ratio	0.3	0.3	–	1×
ρ Density	2700	2700	kg/m³	1×
α Coefficient of thermal expansion	23	23	10⁻⁶/K	1×
λ Thermal conductivity	—	170	W/(m·K)	—
σ_e Electrical conductivity	—	22	MS/m	—
f_u Tensile strength (R_m)	215	180	MPa	0.837×
f_o 0.2 % proof strength	160	110	MPa	0.688×
f_o,haz 0.2 % proof strength in the heat-affected zone	65	95	MPa	1.46×
f_u,haz Tensile strength in the heat-affected zone	110	150	MPa	1.36×
E/ρ Specific stiffness E/ρ · derived	25.93	25.93	MJ/kg	1×
c₀ Bar wave speed √(E/ρ) · derived	5092	5092	m/s	1×
f/ρ Specific strength f/ρ · derived	59.26	40.74	kJ/kg	0.687×

Values at the first thickness band or product form of each material (EN 1999-1-1 · t ≤ 3 mm · EP, ET, ER/B; EN 1999-1-1 · t ≤ 25 mm · EP, ET, ER/B). A minimum and a characteristic value are not the same kind of number — read the ratio as a guide. Each material's page lists every band and every source.