Icon that, when clicked, will open a new window showing a Thermal Conductivity Plot or possibly a window showing that a representative plot has not yet been completed but will be coming soon
Icon that, when clicked, will open a new window showing a Specific Heat Plot or possibly a window showing that a representative plot has not yet been completed but will be coming soon
Icon that, when clicked, will open a new window showing a Young's Modulus plot or possibly a window showing that a representative plot has not yet been completed but will be coming soon
Icon that, when clicked, will open a new window showing a Linear Expansion Plot or possibly a window showing that a representative plot has not yet been completed but will be coming soon
Cryogenic technologies group
Material Properties: Invar (Fe-36Ni) (UNS K93600)
 Data Available:
 Thermal Conductivity
 Specific Heat

 

 
Thermal Conductivity
Specific Heat
UNITS W/(m-K) J/(kg-K)
a -2.7064 28.08
b 8.5191 -228.23
c -15.923 777.587
d 18.276 -1448.423
e -11.9116 1596.567
f 4.40318 -1040.294
g -0.86018 371.2125
h 0.068508 -56.004
i 0 0
data range
4-300 4-20
equation range
4-300 4-27
curve fit % error relative to data 2 2
Curve fit equation of the form:
log10 y = a+b(log10T) + c(log10T) 2 + d(log10T) 3 + e(log10T) 4 + f(log10T) 5 + g(log10T) 6 + h(log10T) 7 + i(log10T) 8


Solves as:
y = 10
a+b(log10T) + c(log10T) 2 + d(log10T) 3 + e(log10T) 4 + f(log10T) 5 + g(log10T) 6 + h(log10T) 7 + i(log10T) 8

Where: Coefficients a - i are summarized in the appropriate table and T is the temperature in K (x-axis), and y is the property to solve for.

Link to References

  Young's Modulus Linear expansion
.Units
GPa [(L-L293)/L293] x 10 5 unitless, eg. m/m
a
1.41565E2 -5.265E1
b
2.54435E-2 1.009E-1
c
-1.00842E-3 8.395E-4
d
6.72797E-6 -1.973E-6
e
-1.08230E-8 8.794E-11
Tlow (K)
. 80
f>
. -40
data range (K)
1-298 4-300
equation range (K)
3-298 4-300
curve fit % error relative to data
1 5
equation of the form:
y = a + bT + cT 2 + dT 3 + eT 4
   >T > Tlow
y = f 
   T < Tlow
solves as expected: Where: Coefficients a-e are summarized in the appropriate table and T is the temperature in K (x-axis), and y is the property to solve for.

link to references                                 Icon used as link to return to Material Properties Index page