Annealing |
Quenching |
Tempering |
Normalizing |
Q & T |
√ |
√ |
√ |
√ |
√ |
Physical Properties
|
Metric
|
English
|
Comments
|
Specific Gravity
|
7.87g/cc
|
7.87g/cc
|
|
|
|||
Mechanical Properties
|
Metric
|
English
|
Comments
|
Hardness, Rockwell C
|
62.0 - 63.0
|
62.0 - 63.0
|
|
Tensile Strength, Ultimate
|
2750 MPa
|
398000 psi
|
when tempered at 175-300°C
|
Modulus of Elasticity
|
150 GPa
|
21700ksi
|
|
Poissons Ratio
|
0.280
|
0.280
|
|
Fatigue Strength
|
8 MPa
@# of Cycles 1.00e+6 |
121000 psi
@# of Cycles 1.00e+6 |
Heat treatment: 1030°C, 520°C (x2), HRc63
|
Shear Modulus
|
58.5 GPa
|
8480 ksi
|
Modulus of Rigidity
|
|
|||
Thermal Properties
|
Metric
|
English
|
Comments
|
CTE, linear
|
12.2 µm/m-°C
@Temperature -100 °C |
6.78µin/in-°F
@Temperature -148 °F |
|
|
12.3 µm/m-°C
@Temperature 300 °C |
6.83µin/in-°F
@Temperature 572 °F |
|
|
13.2 µm/m-°C
@Temperature 500 °C |
7.33 µin/in-°F
@Temperature 932 °F |
|
Thermal Conductivity
|
23.8 W/m-K
|
165 BTU-in/hr-ft²-°F
|
RT
|
25.1 W/m-K
@Temperature 100 °C |
174 BTU-in/hr-ft²-°F
@Temperature 212 °F |
||
|
27.2 W/m-K
@Temperature 400 °C |
188 BTU-in/hr-ft²-°F
@Temperature 752 °F |
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