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Originally Posted by 12B4S
Speaking of hardness and toughness. In the mid 70's I got a Puma Skinner. Still have it. Up the blade is the 'diamond punch mark' Did a quick search on the net. The design is like the top knife in that pic. However, There isn't any etching/writing on that side of my knife. It is on the opposite side and different. it is the 6393, serial # 56472.
http://www.foxridgeoutfitters.com/de...1&product=4109 |
Brad,
I'll assume your asking what steel this is and I don't know but I can ask the owner of Boker or his top knife designer over in Germany. Everyone knows what their competitor is doing.
The "diamond punch mark" is the impression left by the point on the Rockwell hardness tester. The diamond is gently preloaded onto the flat and parallel surface of the heat treated blade, while it rests on the machines anvil, then a known pre-set load is applied. The depth of this impression is carefully gauged by a large readable dial on the Rockwell hardness tester and the user reads off the hardness.
The less the penetration, the harder the steel.
A Rockwell Hardness test is that of testing a given steel or other materials ability to resist surface indentation.