AISI A8 is an Air-Hardening Medium-Alloy Cold Work Steel grade Tool Steel. It is composed of (in weight percentage) 0.50-0.60% Carbon (C), 0.50% Manganese (Mn), 0.75-1.10% Silicon (Si), 4.75-5.50% Chromium (Cr), 0.30% Nickel (Ni), 1.15-1.65% Molybdenum (Mo), 1.00-1.50% Tungsten (W), 0.25% Copper (Cu), 0.03% Phosphorus (P), 0.03% Sulfur (S), and the base metal Iron (Fe). Other designations of AISI A8 tool steel include UNS T30108 and AISI A8.

It exhibits good wear resistance and excellent toughness properties. It is very suitable for many metalworking dies and punches with a hardness of Rockwell C 55-60. A-8 is an air hardening tool and die steel. It exhibits good wear resistance and excellent toughness properties.It is characterized by a combination of very good toughness, moderate wear resistance, and excellent dimensional stability during heat treatment.WM A-8 is an excellent steel for punches and dies operating in the 55-60 Rockwell C hardness range. The combination of toughness and wear resistance makes WM A-8 the best choice for applications requiring higher toughness than high-carbon, high-chromium steels such as D2 and better wear resistance than shock-resistant steels such as S7.

AISI A8 type tool steel are high-quality carbon and alloy steels that are commonly used to make tools, reamers, drills, etc. used in the processing of metals, plastics and wood. They are typically melted and processed in a furnace to give them the properties needed to mold other metals into useful parts.It exhibits good wearing qualities with excellent toughness characteristics. It is well suited for many metals working dies and punches.

We are a well known worldwide supply and export Tool steels in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.