. 2023 Oct 2;13(41):28912–28930. doi: 10.1039/d3ra05334b

Poisson's ratio (ν), Pugh's ratio (B/G), Kleinman parameter (ξ), machinability index (µ_M), hardness values, (H_macro and H_micro in GPa), and fracture toughness, (K_IC in MPam^0.5) of Ru₄Al₃B₂ and Ru₉Al₃B₈ at different pressures (GPa).

Compound	P	ν	B/G	µ _M	H _macro	H _micro	K _IC
Ru₄Al₃B₂	0	0.281	1.95	2.318	11.63	16.70	2.42
	10	0.287	2.01	2.304	12.48	18.99	2.84
	20	0.295	2.10	2.360	12.71	20.51	3.24
	30	0.298	2.15	2.348	13.16	22.01	3.56
Ru₉Al₃B₈	0	0.293	2.08	1.934	11.58	17.81	2.76
	10	0.298	2.15	1.965	12.02	19.42	3.12
	20	0.310	2.30	2.073	11.44	19.68	3.47
	30	0.312	2.33	2.085	12.04	21.38	3.81

Poisson's ratio (ν), Pugh's ratio (B/G), Kleinman parameter (ξ), machinability index (µM), hardness values, (Hmacro and Hmicro in GPa), and fracture toughness, (KIC in MPam0.5) of Ru4Al3B2 and Ru9Al3B8 at different pressures (GPa).