Tool Steel Supplier

What is 4140 Steel? AISI 4140 steel is a low alloy steel containing chromium, molybdenum, and manganese. It is widely used across numerous industries and is an excellent material choice due to its toughness, high fatigue strength, and abrasion and impact resistance. Not many grades can match the versatility and usefulness of 4140. 4140 Grade Designation When discussing AISI 4140, it is important to understand what the grade number means: How is 4140 Steel Made? AISI 4140 is made by placing iron, carbon, and other alloying elements into an electric furnace or oxygen furnace. The major alloying elements added to AISI 4140 are: Chromium Manganese Molybdenum Once the iron, carbon, and other alloying elements have been mixed together in liquid form, it is allowed to cool. The steel may then be annealed; possibly several times. After the annealing is complete, the steel is heated to a molten phase again so that it can be poured into the desired for...

What is heat treating?  Simply defined, it is the controlled heating and cooling of steel in order to enhance certain mechanical and physical properties.  We could go into a deep metallurgical explanation, but you would probably fall asleep, or get easily distracted by all the extra research you would do on tempered martensite or retained austenite.   Heat treating is a commonly misunderstood topic, we hope to guide you in understanding some of the basic processes that will hopefully lead you to ask the right questions about the materials you select and the processes you specify in order to build the best tool you can build. The following is a list of some basic processes that should be considered with any tool steel heat treatment: Stress relief… Why? It reduces dimensional distortion Preheating… Why? Minimizes thermal shock Hardening temperatures and times… Why? Proper temperature and times are critical in producing the desired properties. Quench m...

AISI  8620 Steel  is a low alloy nickel, chromium, molybdenum case hardening steel, generally supplied in the as-rolled condition with a maximum hardness of HB 255max. SAE steel 8620 offers high external strength and good internal strength, making it highly wear resistant. AISI 8620 steel has a higher core strength than grades 8615 and 8617. SAE 8620 alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties. Pre-hardened and tempered (un carburized) 8620 can be further surface hardened by nitriding but will not respond satisfactorily to flame or induction hardening due to its low carbon content. Steel 8620 is suited for applications which require a combination of toughness and wear resistance. This grade is commonly supplied in round bar. 1. AISI 8620 Steel Supply Range 8620 Round Bar: diameter 8mm – 3000mm 8620 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm 8620 Square Bar: 20mm – 500mm 8620 tubes are also...