IRON
|
PROPERTY |
@ 300K |
UNITS |
REFERENCES |
|
Density |
7.874 |
G/cm3 |
Fe1 Fe2 Fe3 |
|
Specific Heat |
0.1050 |
Cal/g-K |
Fe4 Fe5 Fe6 |
|
Thermal Conductivity |
0.192 |
Cal/cm-s-K |
Fe7 Fe8 Fe9 |
|
Thermal Exp Coef |
11.9x10-6 |
1/K |
Fe10 Fe11 Fe12 |
|
Melting Point |
1808 |
K |
Fe13 |
|
Resistivity |
10.0x10-6 |
Ohm-cm |
Fe14 Fe15 Fe16 |
|
TCR (218K to 398K) |
5670 |
Ppm/K |
Fe14 Fe15 Fe16 |
|
Young’s Modulus |
3.056x107 |
psi |
Fe17 Fe18 Fe19 |
|
Poisson’s Ratio |
0.291 |
----- |
Fe17 Fe18 Fe19 |
|
Yield Strength |
6000 |
psi |
Fe20 Fe22 Fe24 |
|
Ult Tensile strength |
20,000 |
psi |
Fe20 Fe21 Fe22 |
|
Elongation at Break |
20-50 |
% |
Fe20 Fe21 Fe22 |
|
Hardness |
49 |
Brinell |
Fe20 Fe23 Fe25 |
Mechanical properties listed are for fully annealed, bulk specimens. The grain size and strain rate have a very strong influence on the mechanical properties. 80% cold work will increase the tensile strength of ingot iron (0.08% C, 0.024% P, 0.019% S, 0.007% Si) to 95 ksi, increase hardness to 210 and decrease elongation to 7% [Fe26]. Heating cold worked material to temperatures in the range of 300 to 500C will cause recovery and recrystallization erasing the effects of cold work.