D35 vs D75

D75 is 1.8 times as stiff as D35. It is 1.6 times as dense. Per unit mass D75 is 1.2 times as stiff. Strength: f_m,k = 35 MPa for D35, f_m,k = 75 MPa for D75.

D35 EN 338:2016 D75 EN 338:2016

Side by side

ratio = D75 / D35 · log scale

Property	D35	D75	Unit	Ratio
E₁ Modulus, direction 1	12	22	GPa	1.83×
E₂ Modulus, direction 2	0.8	1.47	GPa	1.84×
E₃ Modulus, direction 3	0.8	1.47	GPa	1.84×
G₁₂ Shear modulus 1-2	0.75	1.38	GPa	1.84×
G₁₃ Shear modulus 1-3	0.75	1.38	GPa	1.84×
E₀,₀₅ Modulus parallel to grain, 5 % fractile	10.1	18.5	GPa	1.83×
ρ Density	650	1020	kg/m³	1.57×
ρ_k Density, characteristic (5 % fractile)	540	850	kg/m³	1.57×
f_m,k Bending strength	35	75	MPa	2.14×
f_t,0,k Tension parallel to grain	21	45	MPa	2.14×
f_t,90,k Tension perpendicular to grain	0.6	0.6	MPa	1×
f_c,0,k Compression parallel to grain	25	37	MPa	1.48×
f_c,90,k Compression perpendicular to grain	5.4	12.8	MPa	2.37×
f_v,k Shear strength	4.1	5	MPa	1.22×
E/ρ Specific stiffness E/ρ · derived	18.46	21.57	MJ/kg	1.17×
c₀ Bar wave speed √(E/ρ) · derived	4297	4644	m/s	1.08×
f/ρ Specific strength f/ρ · derived	53.85	73.53	kJ/kg	1.37×

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.