Thread: Blue Steel, F.A. Koch

Felt like I needed one made with Blue Steel, I've got one F.A. Koch Faultless that is a great razor, hopefully this one will be as good. Does anyone know what the difference is with Blue Steel ?

I wonder if it is just a marketing gimmick, like Silver Steel or a magnetized razor?

i dont know what it is but those scales turn me off

Found some interesting stuff looking around, don't know if it means anything but here's what I found
Blue Steel
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Blue Steel may mean:

* Martensite steel aka spring steel

Martensite
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Martensite in AISI 4140 steel
0.35%C Steel, water-quenched from 870°C
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Martensite, named after the German metallurgist Adolf Martens (1850–1914), most commonly refers to a very hard form of steel crystalline structure, but it can also refer to any crystal structure that is formed by displacive transformation. It includes a class of hard minerals occurring as lath- or plate-shaped crystal grains. When viewed in cross-section, the lenticular (lens-shaped) crystal grains appear acicular (needle-shaped), which is how they are sometimes incorrectly described.
In the 1890s, Martens studied samples of different steels under a microscope, and found that the hardest steels had a regular crystalline structure. He was the first to explain the cause of the widely differing mechanical properties of steels. Martensitic structures have since been found in many other practical materials, including shape memory alloys and transformation-toughened ceramics.

Spring steel
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Spring steel is a low alloy, medium carbon steel or high carbon steel with a very high yield strength. This allows objects made of spring steel to return to their original shape despite significant bending or twisting.

Most spring steels (as used in cars) are hardened and tempered to about 45 Rockwell C.