ChazzyP
do you know where Shiro runs their blades for hardness?
I was casting about on the Shirogorov website this morning and found the following list of blade steels with descriptions, composition, and hardness listed. I haven't cross-checked with the info I quoted earlier that was provided elsewhere from the Shiro rep. Here's the list pasted in below, translation compliments of the ubiquitously present Google:
Materials For the manufacture of knives used materials:
AISI 440C
AISI 440C, UNS S44004 corrosion-resistant chromium bearing steel, used from the second half of the 60's in the manufacture of blades. Good firmness of the cutting edge.
Composition: C-Carbon - 1.10%, Mn-Manganese - 1.00%, Cr-Chromium-17%, Mo-Molybdenum-1.00%, Si-Silicon - 1.00%. P-Phosphorus 0.04%, S-Sulfur 0.03%.
Hardness 58-59 HRC
ATS-34
High-carbon chromium bearing steel of Japanese production Hitachi Metals, which is widely used among the bladed steels. Very close in composition to the American 154-SM and Swedish RWL-34.
Composition: C-Carbon - 1.05%, Mn-Manganese - 0.4%, Cr-Chromium-14.0%, Mo-Molybdenum-4.0%.
Hardness 59-60 HRC
CTS 40CP
High-carbon, chrome, powder steel developed by Carpenter to provide the maximum hardness after heat treatment (about 61.5 HRC). This steel has found its application in the knife industry, thanks to the crystal lattice, its cutting properties are 40% better than comparable steels.
Composition: C-Carbon 1.2%, Si-Silicon 1.0%, Mn-Manganese 1.0%, Cr-Chrome 18.0%, Mo-Molybdenum 0.75%, P-Phosphorus - 0.04%, S-sulfur - 0.03%.
Hardness 61-62 HRC
Elmax
Alloy steel of Uddeholm, high-carbon chromium, with high wear resistance, good resistance to corrosion.
Composition: C-Carbon 1.7%, Si-Silicon 0.8%, Mn-Manganese 0.3%, Cr-Chromium 18.0%, Mo-Molybdenum 1.0%, V-Vanadium - 3.0%.
Hardness 59-60 HRC
VANAX 35
Alloy steel of Uddeholm, chromium, with high wear resistance and excellent resistance to corrosion.
Composition: C-Carbon 0.2%, N-Nitrogen 1.9%, Si-Silicon 0.3%, Mn-Manganese 0.3%, Cr-Chrome 20.0%, Mo-Molybdenum - 2.5%, V- Vanadium - 2.8%.
Hardness 59-60 HRC
VANAX 37
New alloy steel from Uddeholm, with excellent resistance to corrosion.
Composition: C-Carbon 0.36%, Si-Silicon 0.35%, Mn-Manganese 0.34%, P-Phosphorus 0.187%, S-sulfur 0.009%, Cr-Chrome 18.0 %, Ni-Nickel 0.18%, Mo-Molybdenum 1.05%, W-Tungsten 0.06%, Co-Cobalt 0.05%, V-Vanadium 3.38%, Cu-Copper 0 , 09%, Al-Aluminum 0.005%, N-Nitrogen 1.53%.
Hardness 59-60 HRC
RWL34
Swedish stainless martensitic steel, has good corrosion resistance, hardness and strength.
Composition: C-Carbon - 1.05%, Si-Silicon 0.5%, Mn-Manganese 0.5%, Cr-Chromium 14.0%, Mo-Molybdenum 4.0%, V-Vanadium - 0.20%.
Hardness 59-60 HRC
BG-42
Bearing corrosion-resistant steel Lescalloy BG42 (AMS 5749), developed by the American company Timken Latrobe. A popular material in the manufacture of knife blades of a number of author and serial models.
Composition: C-Carbon 1.15%, Mn-Manganese 0.5%, Cr-Chromium 14.50%, Si-Silicon 0.30%, Mo-Molybdenum 4.00%, V-Vanadium - 1.20%
Hardness 59-60 HRC
Cronidur 30
High-alloyed, corrosion-resistant bearing steel, developed by FAG (Germany). It is marked by high plasticity
Composition: C-Carbon 0.3%, N-Nitrogen 0.42%, Cr-Chromium 14.5%, Mo-Molybdenum 1%, V-Vanadium 0.1%.
Hardness 59-60 HRC
CPM 3V
Powder steel is developed by Crucible Materials Corporation, one of the most durable steels.
Composition: C-Carbon 0.83%, Mn-Manganese 0.39%, P-Phosphorus 0.17%, S-sulfur 0.005%, Si-Silicon 0.90%, Ni-Nickel 0.065 %, Cr-Chromium 7.49%, V-Vanadium 2.61%, W-Tungsten 0.038%, Mo-Molybdenum 1.45%, Co-Cobalt 0.045%, Cu-Copper 0.053%.
Hardness 60-61 HRC
CPM S30V
Powder steel was developed by Crucible Materials Corporation in collaboration with knife master Chris Reeve. Its chemical composition contributes to the formation and distribution of vanadium carbides, which are harder and more effective at cutting than chromium carbides. In addition, vanadium carbides contribute to obtaining a good cutting edge.
Composition: C-Carbon - 1,45%, Cr-Chromium-14,00%, Mo-Molybdenum-2%, V-Vanadium - 4,00%.
Hardness 59-60 HRC
CPM S35VN
Crucible Steel in New York has created steel CPM-S30V as steel, specially designed for knife blades. For the first time, the efforts of the knife industry were aimed at achieving this goal. Shortly after the release of the CPM-S30V, Chris Reeve (Chris Reeve Knives) began working with Dick Barber, a steelworker in Crucible Steel (now). The goal was to create an even better version of steel that had better mechanical properties and other useful qualities. The result of several years of testing and research was steel CPM-S35VN. Chemically this is the same S30V, but with the addition of Niobium.
Composition: C-Carbon 1.38%, Cr-Chromium 14.00%, Mo-Molybdenum 2%, N-Azot <1.00%, V-Vanadium 4.00%, Nb-Niobium - <1.00%.
Hardness 59-60 HRC
CPM S90V
Powder steel was previously CPM 420V, a trademark of the Crucible Materials Corporation. Commercial name S90V. A promising material used to make blades with high wear resistance.
Composition: C-Carbon is 2.3%, Mn-Manganese is 0.40%, Cr-Chromium is 14.0%, V is Vanadium is 5.50%, Mo-Molybdenum is 1%.
Hardness 58-59 HRC
M390
Martensitic Chromium Corrosion Resistant Steel produced by Böhler Bleche GmbH & Co. KG KG (Austria). Powder steel, a promising material in the manufacture of corrosion-resistant blades with increased wear resistance.
Composition: C-Carbon 1.90%, Mn-Manganese 0.30% Si-Silicon 0.60% Cr-Chrome 20.00% Mo-Molybdenum 1.00% W-Tungsten 0.60%, V-Vanadium - 4.00%.
Hardness 60-62 HRC
ZDI-V
AISI420MOV-VANADIS10
Composition: C-Carbon-2.9%, Cr-Chromium 8.0%, Mo-Molybdenum 1.5%, V-Vanadium 9.8%, Si-Silicon-0.5%, Mn-Manganese 0.30%
Hardness - 63-65 HRC
ZDP-189
Powder steel developed in 1996 in Hitachi Metals Japan by technology of amorphous metal alloys high-carbon steel.
Composition: C-Carbon - 3%, Cr-Chromium-20.0%, Si-Silicon - 0.40%, Mo-Molybdenum - 1%, V-Vanadium - 3.00%.
Hardness 64-65 HRC