R = 8.314   #[J/molK]

n = 0.75    #[-]
Teq = 500 + 273   #[K]
T_min_c_curve = 250 #[C]
A0 = 420    #[J/mol]
Qd = 130e3    #[J/mol]

Tr = 300+273    #[K]
tr = 10     #[s]
Xc = 0.05   #[-]

rhoc = 0.0027 #[J/mm^3K]
a = 62      #[mm^2/s]
T0_weld = 20 + 273 #[K]
Tsol_weld = 550 + 273 #[K]
Tmin_weld = 40 + 273 #[K]

qvd_slider_step = 0.01
qvd_slider_min = 0.05
qvd_slider_max = 0.21