Help needed immediately

[waseemgurmani]

could you please tell me the rockwell hardness of these steels
H13, P20 ,D2, AISI 1045
Also their hardness values after hardening and tempering. I am really stuck with these things. could you plzzz help me out........

 

[The Moose]

D2 I'm pretty sure is 57-58

 

[nokia]

hate to be the bearer of bad news, but google is your best friend here.

 

[knarfeng]

could you please tell me the rockwell hardness of these steels
H13, P20 ,D2, AISI 1045
Also their hardness values after hardening and tempering. I am really stuck with these things. could you plzzz help me out........

Howdy,
Welcome to BladeForums:

The Rockwell Hardness will vary depending on what tempering process (time and temperature) is performed. For example, IIRC, D2 ranges from 57 to 62, depending on how it is tempered.

Your best bet for specific temperature profiles and what hardness results from each would be by checking with steel manufacturers. But, you could also ask in the Knifemaker's General Shoptalk forum here:
http://www.bladeforums.com/forums/forumdisplay.php?f=741


Add: here is the Crucible Steel data sheet for D2:
http://www.crucibleservice.com/datash/ACFC3C.pdf?CFID=2079406&CFTOKEN=46197463

 

[eomeo]

http://www.agrussell.com/knife_information/steel_guide/index.html

This might help a bit.

 

[hardheart]

as quenched hardness

H13 - 51 to 54
P20 - 53 to 55 (can be carburized)
D2 - 62 to 64
1045 - 55

from the Heat Treater's Guide