Carbon Steel / uhlíkatá ocel

1095 ( SUP4; 1.1275)
(1.03% Carbon (C), 0.5% Manganese (Mn)) Very popular carbon steel, very easy to machine. Typical Rockwell hardness up to 60 HRc.

1080 (AISI 1080; 80Mn4; 1.1259; 75A)
(0.88% Carbon (C), 0.9% Manganese (Mn)) Low alloy steel, used as spring steel and in knives of all different sizes. After proper heat treatment, it exhibits decent flexibility and moderate toughness, with higher wear resistance. Typical Rockwell hardness up to 57HRc.

1075 (1.1248)
(0.8% Carbon (C), 0.7% Manganese (Mn)) Single carbon steel, when well heat treated, offers decent enough results in edge resistance and toughness. Typical Rockwell hardness up to 55HRc. Germany / ZAPP

1060 (AISI 1060; C60; ČSN12061; 1.0601; 60)
(0.65% Carbon (C),0.9% Manganese (Mn)) Low alloy steel, used as a spring steel and also for knives or sword blades, due to its relative elasticity. Blade durability is not great. Typical Rockwell hardness up to 57HRc.

1065 (AISI 1065; XC65; 1.1230)
(0.7% Carbon (C), 0.9% Manganese (Mn)) A low-alloy spring steel, used primarily for sword blades. It does not offer much toughness or edge durability, but is flexible enough to prevent damage. Typical Rockwell hardness up to 57HRc.

1045 (NO. 19083; 1.1191)
(0.5% Carbon (C), 0.9% Manganese (Mn)) A basic carbon steel, but superior in properties to most cheaper stainless steels. Often used in larger blades or throwing knives. Typical Rockwell hardness up to 52 HRc. 

5160 (60Cr3; 1.7177)
(0.64% Carbon (C), 0.9% Chromium (Cr), 1% Manganese (Mn), 0.3% Silicon (Si)) A very popular steel for knife making where higher toughness is required. It is basically a simple, low alloy spring steel with added Chromium for better hardenability. The steel offers decent wear resistance in its class. Typical Rockwell hardness up to 50HRc for swords and up to 60 HRc for knives.

65Mn (AISI 1066)
(0.71% Carbon (C), 0.25% Chromium (Cr), 1.1% Manganese (Mn), 0.37% Silicon (Si)) Lightly alloyed spring steel, durable in tensile strength. Blade life is quite good. Higher Manganese content allows for higher steel toughness and hardness. Typical Rockwell hardness up to 58HRc.