TABLE III.

GDBCO TAPE: PARAMETERS AND PROPERTIES

Non-GdBCO material		Hastelloy	Cu & others
Overall width/thickness	[mm/μm]	6.0/50	6.0/25
Ic @77K	[A]	> 160
Young’s modulus (E)	[GPa]	197	33* [37]
Poisson’s ratio (v)		0.33	0.33
α† (77K→4.2K)	[%]	0.03 [38]	0.02 [39]
Er, Eh, Ez,	[GPa]	73;142;134
Vrh, Vzh, Vrz		0.40; 0.35; 0.18
αr, αh, αz(77K→4.2K)	[%]	0.026; 0.026; 0.030
95%-Ic strain @77K	[%]	0.6 [40]
95%-ICψ stress @77K	[MPa]	> 850
Pancake-to-pancake 127-μ thick G-10 spacer:
v = 0.33 [41]; Er = Eh= 36 GPa; Ez = 22 GPa [39]
αr = αh = 0.03 %; αz= 0.07 % [39]

^*Assumed all Cu: 165MPa and 0.5% strain @4.2K, 14 T [37].

^†Thermal contraction: (l_{77 k} – l_{4.2 k})l_{293 k}