D35 vs D70

D70 is 1.7 times as stiff as D35. It is 1.5 times as dense. Per unit mass D70 is 1.1 times as stiff. Strength: f_m,k = 35 MPa for D35, f_m,k = 70 MPa for D70.

D35 EN 338:2016 D70 EN 338:2016

Side by side

ratio = D70 / D35 · log scale

Property	D35	D70	Unit	Ratio
E₁ Modulus, direction 1	12	20	GPa	1.67×
E₂ Modulus, direction 2	0.8	1.33	GPa	1.66×
E₃ Modulus, direction 3	0.8	1.33	GPa	1.66×
G₁₂ Shear modulus 1-2	0.75	1.25	GPa	1.67×
G₁₃ Shear modulus 1-3	0.75	1.25	GPa	1.67×
E₀,₀₅ Modulus parallel to grain, 5 % fractile	10.1	16.8	GPa	1.66×
ρ Density	650	960	kg/m³	1.48×
ρ_k Density, characteristic (5 % fractile)	540	800	kg/m³	1.48×
f_m,k Bending strength	35	70	MPa	2×
f_t,0,k Tension parallel to grain	21	42	MPa	2×
f_t,90,k Tension perpendicular to grain	0.6	0.6	MPa	1×
f_c,0,k Compression parallel to grain	25	36	MPa	1.44×
f_c,90,k Compression perpendicular to grain	5.4	12	MPa	2.22×
f_v,k Shear strength	4.1	5	MPa	1.22×
E/ρ Specific stiffness E/ρ · derived	18.46	20.83	MJ/kg	1.13×
c₀ Bar wave speed √(E/ρ) · derived	4297	4564	m/s	1.06×
f/ρ Specific strength f/ρ · derived	53.85	72.92	kJ/kg	1.35×

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.