420 Tool Steel (SS420 / 1.4021) – High Hardness, Wear Resistance & Versatility

420 Tool Steel. Its a martensitic stainless steel type. Folks use it a lot in tooling jobs, cutting work, and those industrial setups that need real high hardness along with good wear resistance and okay corrosion protection. After heat treatment, this stuff hits top notch hardness levels. Thats what makes it go into things like cutlery, molds, surgical tools, and precision gear. 

Nifty Alloys L. L. C. handles supplying 420 Tool Steel reliably across the UAE, Middle East spots, Europe, and Asia too. They offer it in forms such as SS420 round bars, flat bars, plates, and sheets. Quality wise, they stick to top standards only, matching up with international norms for the material itself and delivery timing. Industries that push for the best in their supplies get that on time service from them. So yeah, its a solid choice when materials have to perform.

What is +QT800?

QT800 is a steel grade that has undergone quenching and tempering, characterized by its high strength, toughness, and resistance to wear. The term "QT" refers to Quenched and Tempered, whereas "800" signifies the typical tensile strength, which is around 800 MPa.

QT800 is commonly utilized in sectors where durability, resistance to fatigue, and mechanical strength are of utmost importance.

Key Properties of 420 Tool Steel 

420 tool steel stands out for its balance between hardness and corrosion resistance. Below are the primary properties:

• High Hardness: Can reach 50+ HRC after heat treatment.
   
• Wear Resistance: Suitable for applications involving cutting and abrasion.
   
• Moderate Corrosion Resistance: Better than plain carbon steels but less than austenitic stainless steels.
   
• Good Machinability: Relatively easy to machine in the annealed condition.
   
• Polishability: Excellent surface finish, making it ideal for molds and surgical tools.