C22 vs C27

C27 is 1.1 times as stiff as C22. Their densities are about the same. Per unit mass C27 is 1.1 times as stiff. Strength: f_m,k = 22 MPa for C22, f_m,k = 27 MPa for C27.

C22 EN 338:2016 C27 EN 338:2016

Side by side

ratio = C27 / C22 · log scale

Property	C22	C27	Unit	Ratio
E₁ Modulus, direction 1	10	11.5	GPa	1.15×
E₂ Modulus, direction 2	0.33	0.38	GPa	1.15×
E₃ Modulus, direction 3	0.33	0.38	GPa	1.15×
G₁₂ Shear modulus 1-2	0.63	0.72	GPa	1.14×
G₁₃ Shear modulus 1-3	0.63	0.72	GPa	1.14×
E₀,₀₅ Modulus parallel to grain, 5 % fractile	6.7	7.7	GPa	1.15×
ρ Density	410	430	kg/m³	1.05×
ρ_k Density, characteristic (5 % fractile)	340	360	kg/m³	1.06×
f_m,k Bending strength	22	27	MPa	1.23×
f_t,0,k Tension parallel to grain	13	16.5	MPa	1.27×
f_t,90,k Tension perpendicular to grain	0.4	0.4	MPa	1×
f_c,0,k Compression parallel to grain	20	22	MPa	1.1×
f_c,90,k Compression perpendicular to grain	2.4	2.5	MPa	1.04×
f_v,k Shear strength	3.8	4	MPa	1.05×
E/ρ Specific stiffness E/ρ · derived	24.39	26.74	MJ/kg	1.1×
c₀ Bar wave speed √(E/ρ) · derived	4939	5171	m/s	1.05×
f/ρ Specific strength f/ρ · derived	53.66	62.79	kJ/kg	1.17×

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.