D24 vs D45

D45 is 1.4 times as stiff as D24. It is 1.2 times as dense. Per unit mass D45 is 1.1 times as stiff. Strength: f_m,k = 24 MPa for D24, f_m,k = 45 MPa for D45.

D24 EN 338:2016 D45 EN 338:2016

Side by side

ratio = D45 / D24 · log scale

Property	D24	D45	Unit	Ratio
E₁ Modulus, direction 1	10	13.5	GPa	1.35×
E₂ Modulus, direction 2	0.67	0.9	GPa	1.34×
E₃ Modulus, direction 3	0.67	0.9	GPa	1.34×
G₁₂ Shear modulus 1-2	0.63	0.84	GPa	1.33×
G₁₃ Shear modulus 1-3	0.63	0.84	GPa	1.33×
E₀,₀₅ Modulus parallel to grain, 5 % fractile	8.4	11.3	GPa	1.35×
ρ Density	580	700	kg/m³	1.21×
ρ_k Density, characteristic (5 % fractile)	485	580	kg/m³	1.2×
f_m,k Bending strength	24	45	MPa	1.88×
f_t,0,k Tension parallel to grain	14	27	MPa	1.93×
f_t,90,k Tension perpendicular to grain	0.6	0.6	MPa	1×
f_c,0,k Compression parallel to grain	21	29	MPa	1.38×
f_c,90,k Compression perpendicular to grain	4.9	5.8	MPa	1.18×
f_v,k Shear strength	3.7	4.4	MPa	1.19×
E/ρ Specific stiffness E/ρ · derived	17.24	19.29	MJ/kg	1.12×
c₀ Bar wave speed √(E/ρ) · derived	4152	4392	m/s	1.06×
f/ρ Specific strength f/ρ · derived	41.38	64.29	kJ/kg	1.55×

Values at the first thickness band or product form of each material (EN 338:2016; EN 338:2016). 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.