what is this steel?

[scrapin' by]

i acquired two circle saw blades 16" & 18" that have been taken out of service. they were carbide toothed, freud name brand. these are made in italy from german steel. after several emails to germany i finally convinced them to tell me what kind of steel it was,etc. it is as follows:



mill grade C 75.





The analysis you will see as follows.





C 75





C 0,79 - 0,82 Si 0,15 - 0,25 Mn 0,40 - 0,50 P max. 0,020


S max. 0,003 Cr max. 0,15 Al 0,020 - 0,,035





Instruction for heat treatment.





hardening-process: 810 - 840 degrees celsius, hardness approx. 62 HRc.


quenching in oil.


tempering-process: 200 degrees celsius, approx. 58 HRc


300 degrees celsius, approx. 54 HRc


350 degrees celsius, approx. 50 HRc


400 degrees celsius, approx. 47 HRc


450 degrees celsius, approx. 44 HRc


500 degrees celsius, approx. 41 HRc



can anyone inform me as to whether or not to fool w/this steel to make knives with?



thanks in advance for all the help and info.

 

[Bruce Evans]

Dont know nothing about it,Thats why I will only use old saw mill size blades with no carbide teeth its L6.Just my opinion..Bruce

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The Soul of the Knife begins in the FIRE !!!!

 

[slon]

Germany DIN steel C75 (W. Nr. 1.0605) is AISI/SAE 1075 steel