D35 vs D50

D50 is 1.2 times as stiff as D35. It is 1.1 times as dense. Per unit mass they are about equally stiff (18.46 and 18.92 MJ/kg). Strength: f_m,k = 35 MPa for D35, f_m,k = 50 MPa for D50.

D35 EN 338:2016 D50 EN 338:2016

Side by side

ratio = D50 / D35 · log scale

Property	D35	D50	Unit	Ratio
E₁ Modulus, direction 1	12	14	GPa	1.17×
E₂ Modulus, direction 2	0.8	0.93	GPa	1.16×
E₃ Modulus, direction 3	0.8	0.93	GPa	1.16×
G₁₂ Shear modulus 1-2	0.75	0.88	GPa	1.17×
G₁₃ Shear modulus 1-3	0.75	0.88	GPa	1.17×
E₀,₀₅ Modulus parallel to grain, 5 % fractile	10.1	11.8	GPa	1.17×
ρ Density	650	740	kg/m³	1.14×
ρ_k Density, characteristic (5 % fractile)	540	620	kg/m³	1.15×
f_m,k Bending strength	35	50	MPa	1.43×
f_t,0,k Tension parallel to grain	21	30	MPa	1.43×
f_t,90,k Tension perpendicular to grain	0.6	0.6	MPa	1×
f_c,0,k Compression parallel to grain	25	30	MPa	1.2×
f_c,90,k Compression perpendicular to grain	5.4	6.2	MPa	1.15×
f_v,k Shear strength	4.1	4.5	MPa	1.1×
E/ρ Specific stiffness E/ρ · derived	18.46	18.92	MJ/kg	1.02×
c₀ Bar wave speed √(E/ρ) · derived	4297	4350	m/s	1.01×
f/ρ Specific strength f/ρ · derived	53.85	67.57	kJ/kg	1.25×

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.