Which kind of steel is this ?

Martin Lubojacky · 22nd October 2014, 08:25 AM

The blade (cca 60 cms long and originally very rusty), was mechanically cleaned, plunged into disodium salt of EDTA and again cleaned with a very fine steel brush, than cleaned in demi water and treated wit silicon oil.

I think the steel is not mechanical damascus, actually, I don´t know what to think about it. If I cleaned it too much deep, the structure(design) disappeared on some places (tip and near the tip). What is this ? I heard such design could be result of tempering (quenching), but I am not sure. (the handle is original except of the central rhomb rivet which is new).

ALEX · 22nd October 2014, 09:38 AM

Martin, I do not see/think it has any particular pattern, although I see one weak streak, but hard to tell. extensive pitting and mechanical cleaning do weaken the pattern and make it harder to etch.

Iain · 22nd October 2014, 10:59 AM

I have to say it looks like mono steel to me, simply exhibiting aging due to exposure to dust/dirt etc.

Gavin Nugent · 22nd October 2014, 01:56 PM

The type is known to have a twist core centre within the very narrow fullers but nothing gives it away if it is there.

Oliver Pinchot · 22nd October 2014, 05:07 PM

These blades are often layered, which etching may reveal. But it isn't an intentional pattern-weld. I'd leave it as is or perhaps clean lightly.

22nd October 2014, 08:25 AM	#1
Martin Lubojacky Member Join Date: May 2008 Location: Czech Republic Posts: 841	Which kind of steel is this ? The blade (cca 60 cms long and originally very rusty), was mechanically cleaned, plunged into disodium salt of EDTA and again cleaned with a very fine steel brush, than cleaned in demi water and treated wit silicon oil. I think the steel is not mechanical damascus, actually, I don´t know what to think about it. If I cleaned it too much deep, the structure(design) disappeared on some places (tip and near the tip). What is this ? I heard such design could be result of tempering (quenching), but I am not sure. (the handle is original except of the central rhomb rivet which is new). Attached Images

22nd October 2014, 09:38 AM	#2
ALEX Member Join Date: Jan 2006 Posts: 936	Martin, I do not see/think it has any particular pattern, although I see one weak streak, but hard to tell. extensive pitting and mechanical cleaning do weaken the pattern and make it harder to etch.

22nd October 2014, 10:59 AM	#3
Iain Member Join Date: Mar 2010 Location: Olomouc Posts: 1,693	I have to say it looks like mono steel to me, simply exhibiting aging due to exposure to dust/dirt etc.

22nd October 2014, 01:56 PM	#4
Gavin Nugent Member Join Date: Oct 2007 Posts: 2,818	The type is known to have a twist core centre within the very narrow fullers but nothing gives it away if it is there.

22nd October 2014, 05:07 PM	#5
Oliver Pinchot Member Join Date: Sep 2012 Posts: 457	These blades are often layered, which etching may reveal. But it isn't an intentional pattern-weld. I'd leave it as is or perhaps clean lightly.