Poisson Ratio of the Elements

Poisson's ratio (ν) is the negative ratio of transverse strain to axial strain when a material is stretched or compressed. Most materials have values between 0.0 and 0.5 — rubber approaches 0.5, while typical solids fall in the range 0.2–0.3. Named after Siméon Poisson.

Data available for 54 of 118 elements. Highest: Thallium (0.45). Lowest: Beryllium (0.032).

Visualize Poisson Ratio in the periodic table →

118 elements

Poisson Ratio of the Elements
		Symbol
81	Thallium	Tl	0.45
79	Gold	Au	0.44
82	Lead	Pb	0.44
41	Niobium	Nb	0.4
46	Palladium	Pd	0.39
78	Platinum	Pt	0.38
23	Vanadium	V	0.37
47	Silver	Ag	0.37
72	Hafnium	Hf	0.37
50	Tin	Sn	0.36
13	Aluminum	Al	0.35
29	Copper	Cu	0.34
40	Zirconium	Zr	0.34
73	Tantalum	Ta	0.34
34	Selenium	Se	0.33
83	Bismuth	Bi	0.33
22	Titanium	Ti	0.32
20	Calcium	Ca	0.31
27	Cobalt	Co	0.31
28	Nickel	Ni	0.31
42	Molybdenum	Mo	0.31
44	Ruthenium	Ru	0.3
48	Cadmium	Cd	0.3
75	Rhenium	Re	0.3
12	Magnesium	Mg	0.29
26	Iron	Fe	0.29
21	Scandium	Sc	0.28
38	Strontium	Sr	0.28
57	Lanthanum	La	0.28
59	Praseodymium	Pr	0.28
60	Neodymium	Nd	0.28
61	Promethium	Pm	0.28
74	Tungsten	W	0.28
62	Samarium	Sm	0.27
90	Thorium	Th	0.27
45	Rhodium	Rh	0.26
64	Gadolinium	Gd	0.26
65	Terbium	Tb	0.26
71	Lutetium	Lu	0.26
77	Iridium	Ir	0.26
30	Zinc	Zn	0.25
66	Dysprosium	Dy	0.25
76	Osmium	Os	0.25
39	Yttrium	Y	0.24
58	Cerium	Ce	0.24
68	Erbium	Er	0.24
67	Holmium	Ho	0.23
92	Uranium	U	0.23
24	Chromium	Cr	0.21
69	Thulium	Tm	0.21
70	Ytterbium	Yb	0.21
94	Plutonium	Pu	0.21
63	Europium	Eu	0.15
4	Beryllium	Be	0.032
1	Hydrogen	H	—
2	Helium	He	—
3	Lithium	Li	—
5	Boron	B	—
6	Carbon	C	—
7	Nitrogen	N	—
8	Oxygen	O	—
9	Fluorine	F	—
10	Neon	Ne	—
11	Sodium	Na	—
14	Silicon	Si	—
15	Phosphorus	P	—
16	Sulfur	S	—
17	Chlorine	Cl	—
18	Argon	Ar	—
19	Potassium	K	—
25	Manganese	Mn	—
31	Gallium	Ga	—
32	Germanium	Ge	—
33	Arsenic	As	—
35	Bromine	Br	—
36	Krypton	Kr	—
37	Rubidium	Rb	—
43	Technetium	Tc	—
49	Indium	In	—
51	Antimony	Sb	—
52	Tellurium	Te	—
53	Iodine	I	—
54	Xenon	Xe	—
55	Cesium	Cs	—
56	Barium	Ba	—
80	Mercury	Hg	—
84	Polonium	Po	—
85	Astatine	At	—
86	Radon	Rn	—
87	Francium	Fr	—
88	Radium	Ra	—
89	Actinium	Ac	—
91	Protactinium	Pa	—
93	Neptunium	Np	—
95	Americium	Am	—
96	Curium	Cm	—
97	Berkelium	Bk	—
98	Californium	Cf	—
99	Einsteinium	Es	—
100	Fermium	Fm	—
101	Mendelevium	Md	—
102	Nobelium	No	—
103	Lawrencium	Lr	—
104	Rutherfordium	Rf	—
105	Dubnium	Db	—
106	Seaborgium	Sg	—
107	Bohrium	Bh	—
108	Hassium	Hs	—
109	Meitnerium	Mt	—
110	Darmstadtium	Ds	—
111	Roentgenium	Rg	—
112	Copernicium	Cn	—
113	Nihonium	Nh	—
114	Flerovium	Fl	—
115	Moscovium	Mc	—
116	Livermorium	Lv	—
117	Tennessine	Ts	—
118	Oganesson	Og	—

Poisson Ratio of the Elements

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