1.4401 (X5CrNiMo17-12-2) vs 1.4541 (X6CrNiTi18-10)

1.4541 (X6CrNiTi18-10) and 1.4401 (X5CrNiMo17-12-2) are about equally stiff. Their densities are about the same. Per unit mass they are about equally stiff (25 and 25.32 MJ/kg). Strength: f_y = 240 MPa for 1.4401 (X5CrNiMo17-12-2), f_y = 220 MPa for 1.4541 (X6CrNiTi18-10).

1.4401 (X5CrNiMo17-12-2) EN 1993-1-4 · EN 10088 · t ≤ 8 mm · C 1.4541 (X6CrNiTi18-10) EN 1993-1-4 · EN 10088 · t ≤ 8 mm · C

Side by side

ratio = 1.4541 (X6CrNiTi18-10) / 1.4401 (X5CrNiMo17-12-2) · log scale

Property	1.4401 (X5CrNiMo17-12-2)	1.4541 (X6CrNiTi18-10)	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	8000	7900	kg/m³	0.988×
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	0.75	0.73	µΩ·m	0.973×
f_y Yield strength (R_eH / R_p0.2)	240	220	MPa	0.917×
f_u Tensile strength (R_m)	530	520	MPa	0.981×
E/ρ Specific stiffness E/ρ · derived	25	25.32	MJ/kg	1.01×
c₀ Bar wave speed √(E/ρ) · derived	5000	5032	m/s	1.01×
f/ρ Specific strength f/ρ · derived	30	27.85	kJ/kg	0.928×

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.