What's the difference between hard alloy and tungsten steel?

Tungsten steel: The finished product contains about 18% tungsten alloy steel, tungsten steel alloy belongs to hard alloy, also known as tungsten titanium alloy. Hardness of 10K Vickers, second only to diamond. Because of this, tungsten steel products (commonly known as tungsten steel watches), with the characteristics of not easy to be worn. Often used for lathe tool, impact drill bit, glass knife head, tile cutter, strong not afraid of annealing, but brittle quality.

Hard alloy: Attributed to the field of powder metallurgy carbide also known as cermet metal carbide (WC, TaC, TiC, NbC, etc.) may metal oxides (such as Al2O3, ZrO2, etc.) as the primary component, participate in the right amount of metal powder (Co, Cr, Mo, Ni, Fe, etc.) made by powder metallurgy method, A ceramic having certain properties of metal. Cobalt (Co) is used to bond the alloy, that is, during sintering, it can surround and bond tungsten carbide (WC) powder tightly together, and when cooled, it becomes cemented carbide (the effect is equivalent to cement in concrete). Tungsten carbide (WC) is the first component of some metal properties of the resolution of this hard alloy or cermet, accounting for 70%- 97% of the total composition (weight ratio) is widely used in wear resistance, high temperature resistance, corrosion resistance, working environment harsh parts or tools, tool head.

Tungsten steel is attributed to hard alloy, but hard alloy is not tungsten steel, now Taiwan and Southeast Asian customers like to use the word tungsten steel, if you talk to them carefully deepen, it will be found that most still refers to hard alloy.

The difference between tungsten steel and hard alloy is: also called high-speed steel or tool steel, tungsten steel is made of steel making skills in molten steel to participate in tungsten iron as tungsten material smelting, also called high-speed steel or tool steel, the tungsten content is usually 15-25%; The cemented carbide is sintered with cobalt or other bonding metals using powder metallurgy skills with tungsten carbide as the main body, and its tungsten content is usually more than 80%. Simply say that all hardness beyond HRC65 things as long as it is alloy can be called hard alloy, tungsten steel only a hardness of hard alloy between HRC85 and 92, often used to make knives.