Need info on German Steel

C

cramnhoj

Joined
Aug 27, 2004
Messages
27
Zielver Stahl Cold Work Nr. 501
C 1.70
Cr 12.0
W 0.5
Mo 0.65
V 0.10
Tu 0.50

Hi, was asking around at local metal supplies for tool steels and one company offered me this, saying it was equivalent to D2. Seems it lacks the Mo and V of D2 but makes up for it by adding more carbon. But it does seem to me, to be already a bit too much carbon. Will this steel end up being brittle in a knife blade? Also, can't seem to find anything about this steel on the internet, if anybody has experience with this thing I'd appreciate any tips on it. Thanks in advance.
 
While you don't have as much V and Mo as D2 you do have W. I would expect this steel to be very close to D2.Does your supplier offer heat treating instructions for the steel ?
 
Actually I don't know what W is? I was also thinking since it also has Tungsten which would also form carbides that are harder than chromium carbides, wouldn't that also help in the lack of Mo and V?

Hardening 980-1020 degrees C
Quenching Oil, Air, or Hot bath 500-550 degrees C
63-64 HRC after quenching
Tempering
63 Hrc at 100 degrees C
61 Hrc at 200 degrees C
59 Hrc at 300 degrees C
58 Hrc at 400 degrees C
59 Hrc at 500 degrees C
60 Hrc at 525 degrees C
57 Hrc at 550 degrees C
 
W=wolfram =tungsten. The chemical symbol for tungsten is W and people get confused .Wolfram is german, tungsten [heavy stone]is swedish.Tunsten is more available in europe, we have more Mo.Note that at 525C there is a jump in hardness. This is what we call secondary hardening and it occurs because of the formation of complex carbides of Mo, V, W. BTW since you can get that german steel where are you located ?
 
I thought Tu was Tungsten? Maybe I should read up on the elements. Anyway I'm nowhere near Europe if that's what you're thinking, I'm actually in South East Asia.
 
Seems like it would make a pretty good blade. Maybe not something you wanna forge out, but stock removal should be fine.
 
How about the 1.70 carbon part, will that make it brittle or do you guys think it'll be just fine? They were offering it at a nice price too, 3/8" x 2 1/8" x 18" at less than $20. Was thinking of trying to make an integral knife out of it someday.
 
It will work fine , much of that carbon will be tied up as carbides.
 
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