D24 vs D75

D75 is 2.2 times as stiff as D24. It is 1.8 times as dense. Per unit mass D75 is 1.3 times as stiff. Strength: f_m,k = 24 MPa for D24, f_m,k = 75 MPa for D75.

D24 EN 338:2016 D75 EN 338:2016

Side by side

ratio = D75 / D24 · log scale

Property	D24	D75	Unit	Ratio
E₁ Modulus, direction 1	10	22	GPa	2.2×
E₂ Modulus, direction 2	0.67	1.47	GPa	2.19×
E₃ Modulus, direction 3	0.67	1.47	GPa	2.19×
G₁₂ Shear modulus 1-2	0.63	1.38	GPa	2.19×
G₁₃ Shear modulus 1-3	0.63	1.38	GPa	2.19×
E₀,₀₅ Modulus parallel to grain, 5 % fractile	8.4	18.5	GPa	2.2×
ρ Density	580	1020	kg/m³	1.76×
ρ_k Density, characteristic (5 % fractile)	485	850	kg/m³	1.75×
f_m,k Bending strength	24	75	MPa	3.12×
f_t,0,k Tension parallel to grain	14	45	MPa	3.21×
f_t,90,k Tension perpendicular to grain	0.6	0.6	MPa	1×
f_c,0,k Compression parallel to grain	21	37	MPa	1.76×
f_c,90,k Compression perpendicular to grain	4.9	12.8	MPa	2.61×
f_v,k Shear strength	3.7	5	MPa	1.35×
E/ρ Specific stiffness E/ρ · derived	17.24	21.57	MJ/kg	1.25×
c₀ Bar wave speed √(E/ρ) · derived	4152	4644	m/s	1.12×
f/ρ Specific strength f/ρ · derived	41.38	73.53	kJ/kg	1.78×

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.