Ethnographic Arms & Armour - View Single Post

Chris Evans · 23rd October 2006, 01:59 AM

S.Al-Anizi,

I was muzing over your original question and in particular the replies given by Jeff Pringle and Gt Obach.

Of course one of the problems is that we we do not know, or at least we haven't defined, the lower limit of acceptable mechanical properties for a war sword. Nor have we established what significant advantages and in what context can be obtained by exceeding this lower limit. I suspect, that for a cavalry sword made from conventional martensitic steel, that is not likely to encounter heavy armour, a hardness of 45Rc is adequate, as long as it is not brittle.

Be that as it may, it will do us well to remember that pearlitic steels can be work hardened to a surprising degree, as exemplified by piano wire, which is usually made from hard drawn pearlitic 0.8% carbon steel. It is both very tough and hard. Now, going back to that paper by prof.Verhoeven's, A.H.Pendray's, and W.E.Dauksch's, I suspect that had they Brinell tested the blades they would have obtained a higher hardness reading, perhaps in the low to mid 40s and as well, I don't think that they tested top class swords. Additionally, the part of a sword where hardness counts the most is at the edge and that part cannot be tested by either the Rockwell or Brinell, but only by Vickers, which makes such a small indentation that with wootz it could be misleading,

I think that it would be a fair bet that the very best of the of the woots swords had much harder work hardened blades.

Just some thoughts
Chris

23rd October 2006, 01:59 AM	#81
Chris Evans Member Join Date: Mar 2005 Location: Australia Posts: 661	S.Al-Anizi, I was muzing over your original question and in particular the replies given by Jeff Pringle and Gt Obach. Of course one of the problems is that we we do not know, or at least we haven't defined, the lower limit of acceptable mechanical properties for a war sword. Nor have we established what significant advantages and in what context can be obtained by exceeding this lower limit. I suspect, that for a cavalry sword made from conventional martensitic steel, that is not likely to encounter heavy armour, a hardness of 45Rc is adequate, as long as it is not brittle. Be that as it may, it will do us well to remember that pearlitic steels can be work hardened to a surprising degree, as exemplified by piano wire, which is usually made from hard drawn pearlitic 0.8% carbon steel. It is both very tough and hard. Now, going back to that paper by prof.Verhoeven's, A.H.Pendray's, and W.E.Dauksch's, I suspect that had they Brinell tested the blades they would have obtained a higher hardness reading, perhaps in the low to mid 40s and as well, I don't think that they tested top class swords. Additionally, the part of a sword where hardness counts the most is at the edge and that part cannot be tested by either the Rockwell or Brinell, but only by Vickers, which makes such a small indentation that with wootz it could be misleading, I think that it would be a fair bet that the very best of the of the woots swords had much harder work hardened blades. Just some thoughts Chris Last edited by Chris Evans; 23rd October 2006 at 02:40 AM.