1.4301 (X5CrNi18-10) vs 1.4307 (X2CrNi18-9)

1.4307 (X2CrNi18-9) and 1.4301 (X5CrNi18-10) are about equally stiff. Their densities are about the same. Per unit mass they are about equally stiff (25.32 and 25.32 MJ/kg). Strength: f_y = 230 MPa for 1.4301 (X5CrNi18-10), f_y = 220 MPa for 1.4307 (X2CrNi18-9).

1.4301 (X5CrNi18-10) EN 1993-1-4 · EN 10088 · t ≤ 8 mm · C 1.4307 (X2CrNi18-9) EN 1993-1-4 · EN 10088 · t ≤ 8 mm · C

Side by side

ratio = 1.4307 (X2CrNi18-9) / 1.4301 (X5CrNi18-10) · log scale

Property	1.4301 (X5CrNi18-10)	1.4307 (X2CrNi18-9)	Unit	Ratio
E Young's modulus	200	200	GPa	1×
G Shear modulus	76.92	76.92	GPa	1×
ν Poisson's ratio	0.3	0.3	–	1×
ρ Density	7900	7900	kg/m³	1×
α Coefficient of thermal expansion	16	16	10⁻⁶/K	1×
λ Thermal conductivity	15	15	W/(m·K)	1×
c_p Specific heat capacity	500	500	J/(kg·K)	1×
ρ_e Electrical resistivity	0.73	0.73	µΩ·m	1×
f_y Yield strength (R_eH / R_p0.2)	230	220	MPa	0.957×
f_u Tensile strength (R_m)	540	520	MPa	0.963×
E/ρ Specific stiffness E/ρ · derived	25.32	25.32	MJ/kg	1×
c₀ Bar wave speed √(E/ρ) · derived	5032	5032	m/s	1×
f/ρ Specific strength f/ρ · derived	29.11	27.85	kJ/kg	0.957×

Values at the first thickness band or product form of each material (EN 1993-1-4 · EN 10088 · t ≤ 8 mm · C; EN 1993-1-4 · EN 10088 · t ≤ 8 mm · C). 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.