As we all know that the good material it very important to a high quality products.So as well as the highest quality stainless steel of a knife.Therefore,We would like to introduce several kinds of steel which we are using most common at present,such as CPM S35VN and CPM M390.And also the Carpenter® CTS® 204P Alloy will be an important part of Reate Knives in the future. CPM S35VN CPM S35VN is a tougher version of the popular CPM S30V, due to the addition of niobium. With the addition of 5% niobium, niobium carbides are formed, making CPM S35VN tougher and better able to hold an edge. Machinabilityis also improved.CPM steel production ,due to its uniformity and high quality, so it is better than the traditional craft production of steel and has better dimensional stability (after heat treatment deformation rate from 0.05% to 0.1%), easy to grind and Higher Toughness. Chemical Composition: Carbon 1.40% Chromium 14.00% Vanadium 3.00% Molybdenum 2.00% Niobium 0.50% Physical Properties: Modulus of Elasticity 30psix10(6) (200 GPa) Density 0.278 lb/in3 (7640 kg/M3) Thermal Conductivity 14.0 BTU/hr./ft./F 24.2 W/m/ °K) CPM M390 M390 is an awesome steel- It's one of the most commonly used "supersteels" out there.M390 is pretty much the best stainless steel in terms of edge retention, and also has good corrosion resistance and very good toughness considering how high the hardness is. In terms of toughness compared to other stainless steels like S35NV or XHP it is inferior. There are other options like S110V, and ZDP 189 which also have great edge retention but generally will be more prone to chipping than M390.Whats more,its high austenizing temperature imparts M390 with a high attainable hardness of RC 58-62. Chemical Composition： Carbon 1.90% Chromium 20.00% Vanadium 4.00% Molybdenum 1.00% Silicon 70% Tungsten 60% Manganese 30% Physical Properties： Density 0.274 lb/in3 (7400 kg/M3) Thermal Conductivity 9.8 BTU/hr./ft./F 14.0 W/m/ °K) CTS® 204P Carpenter® CTS® 204P alloy is a highly wear and corrosion resistant, air hardening martensitic cold-work stainless die steel produced using Carpenter's Micro Melt® powder metallurgy (P/M) process. The excellent wear resistance of the alloy is provided by a significant volume fraction of hard vanadium rich carbides, while the alloy's outstanding corrosion resistance is obtained as a result of the chromium-rich matrix. The application of Carpenter's Micro-Melt® P/M processing creates a segregation-free and homogeneously fine carbide and grain size distribution, and when coupled with the use of molten metal filtration, results in improved cleanliness and toughness compared to conventionally cast and wrought processed material. CTS 204P alloy's uniform microstructure, fine carbide distribution, cleanliness and high chromium content, is responsible for the material's excellent combination of wear resistance, toughness, polishability and corrosion resistance. Chemical Composition： Carbon 1.90% Manganese 0.35% Silicon 0.60% Chromium 20.00% Molybdenum 1.00% Vanadium 4.00% Tungsten 0.65% Iron Balance Physical Properties： Specific Gravity 7.61 Density 0.2750 lb/in³ Mean CTE 68 to 212°F 6.06 x 10-6 in/in/°F 68 to 392°F 6.23 x 10-6 in/in/°F 68 to 572°F 6.56 x 10-6 in/in/°F 68 to 752°F 6.73 x 10-6 in/in/°F 68 to 932°F 6.84 x 10-6 in/in/°F Mean Coefficient of Thermal Expansion Any information of the steel to add,welcome to leave your message. What kind of steels you are most interested in welcome to share with us. Thank you all for your time.