414 / 416 , Ground Floor, Maulana Azad Road,

Grant Road (East), Mumbai 400 004



Material Notes:

Oversized Charpy specimens austenitized at 1010°C for 1 hr., air-cooled, and double tempered to indicated hardness in Charpy Impact notes prior to grinding to finished size.

Physical Properties
Metric English Comments
Density 8.19 g/cc 0.296 lb/in³


Mechanical Properties
Metric English Comments
Hardness, Rockwell C 40 - 55 40 - 55
Bulk Modulus 160 GPa 23200 ksi Typical for steel.
Shear Modulus 80.0 GPa 11600 ksi Typical for steel.


Thermal Properties
Metric English Comments
CTE, linear 12.4 µm/m-°C 27.0 W/m-K
Thermal Conductivity 6.89 µin/in-°F 187 BTU-in/hr-ft²-°F


Processing Properties
Metric English Comments
Processing Temperature 595 - 675 °C 1100 - 1250 °F Tempering Temperature
1095 - 1205 °C 2003 - 2201 °F Tempering Temperature
Annealing Temperature 870 - 900 °C 1600 - 1650 °F


Component Elements Properties
Metric English Comments
Carbon, C 0.30 % 0.30 %
Chromium, Cr 3.3 % 3.3 %
Manganese, Mn 0.30 % 0.30 %
Silicon, Si 0.34 % 0.34 %
Tungsten, W 9.0 % 9.0 %
Vanadium, V 0.25 % 0.25 %