GL24h vs C24

C24 and GL24h are about equally stiff. Their densities are about the same. Per unit mass they are about equally stiff (27.38 and 26.19 MJ/kg). Strength: f_m,k = 24 MPa for GL24h, f_m,k = 24 MPa for C24.

GL24h EN 14080:2013 C24 EN 338:2016

Side by side

ratio = C24 / GL24h · log scale

Property	GL24h	C24	Unit	Ratio
E₁ Modulus, direction 1	11.5	11	GPa	0.957×
E₂ Modulus, direction 2	0.3	0.37	GPa	1.23×
E₃ Modulus, direction 3	0.3	0.37	GPa	1.23×
G₁₂ Shear modulus 1-2	0.65	0.69	GPa	1.06×
G₁₃ Shear modulus 1-3	0.65	0.69	GPa	1.06×
G₂₃ Shear modulus 2-3	0.065	—	GPa	—
E₀,₀₅ Modulus parallel to grain, 5 % fractile	9.6	7.4	GPa	0.771×
E₉₀,₀₅ Modulus perpendicular to grain, 5 % fractile	0.25	—	GPa	—
G₀₅ Shear modulus, 5 % fractile	0.54	—	GPa	—
G_r Rolling shear modulus	0.065	—	GPa	—
ρ Density	420	420	kg/m³	1×
ρ_k Density, characteristic (5 % fractile)	385	350	kg/m³	0.909×
f_m,k Bending strength	24	24	MPa	1×
f_t,0,k Tension parallel to grain	19.2	14.5	MPa	0.755×
f_t,90,k Tension perpendicular to grain	0.5	0.4	MPa	0.8×
f_c,0,k Compression parallel to grain	24	21	MPa	0.875×
f_c,90,k Compression perpendicular to grain	2.5	2.5	MPa	1×
f_v,k Shear strength	3.5	4	MPa	1.14×
f_r,k Rolling shear strength	1.2	—	MPa	—
E/ρ Specific stiffness E/ρ · derived	27.38	26.19	MJ/kg	0.957×
c₀ Bar wave speed √(E/ρ) · derived	5233	5118	m/s	0.978×
f/ρ Specific strength f/ρ · derived	57.14	57.14	kJ/kg	1×

Values at the first thickness band or product form of each material (EN 14080:2013; 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.