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Tool Steel A3
Material Type
Metal
Material Name
Tool Steel A3
Alternative Names
T30103 | W1-A-1
Process Compatibility
CNC Milling, CNC Turning
introduction
Tool Steel A3 in CNC Machining
Tool Steel A3, also known as AISI A3 or W1-A-1, is a high-carbon, high-alloy steel with excellent wear resistance and toughness.
It is composed of 1.00-1.25% carbon, 0.20-0.70% manganese, 0.10-0.50% silicon, 0.20-0.50% chromium, and 0.30% nickel, with other elements present in trace amounts. We offer AISI A3 tool steel in various forms, including round bars, flat bars, plates, hexagonal bars, and square blocks. Custom lengths and sizes are available upon request, with precision-ground options for tight tolerances.
A3 steel is processed through forging, annealing, hardening, and tempering. Forging involves heating, raising temperatures for yielding, and slow cooling. Annealing includes heating and slow cooling for a max hardness of 250 HB. Hardening requires uniform heating and cooling with air or oil. Tempering is done at specific temperatures, resulting in a hardness range of 57-62 Rockwell C.
Properties
Properties Table of Tool Steel A3
| MECHANICAL PROPERTIES | |
|---|---|
| Ultimate Tensile Strength | 700 MPa |
| Yield Strength | 340 MPa |
| Young's Modulus(Elasticity) | 190 GPa |
| Elongation at Break | 21% |
| Physical Properties | |
| Corrosion Resistance | Poor |
| Magnetism | Magnetic |
| Weldability | Poor |
| Thermal Properties | |
| Thermal Expansion Coefficient | 11.8-14.3 x 10^-6/°C |
| Thermal Conductivity | 37 W/(m·°C) |
TECHNOLOGY OVERVIEW
Basic Knowledge of Tool Steel A3
What is Tool Steel A3?
Tool Steel A3 is an air-hardening, medium-alloy, cold-work tool steel with excellent toughness and wear resistance. It is used for various tool and die applications, such as blanking, forming, and shearing tools.
A3 steel contains chromium, manganese, and other alloying elements to enhance its performance in cutting and forming processes.
Advantages of Tool Steel A3
Good wear resistance
High toughness
Excellent machinability
Maintains a sharp cutting edge
Cost-effective compared to some other tool steels
Applications of Tool Steel A3
Punches and Dies
Cutting Tools (blades, knives)
Forming Dies
Cold Work Tools
Thread Rolling Dies
Metal Extrusion Tools
FAQ
Machining Tool Steel A3 Buying FAQ
A2 has higher chromium and vanadium, providing better wear resistance, while A3 has more carbon and manganese, offering higher toughness.
Tool steel A3 can be welded, but it requires careful preheating and post-weld heat treatment to avoid issues like cracking.
Tool steel A3 is not highly corrosion-resistant. It's advisable to use a protective coating or choose a different steel grade for applications requiring corrosion resistance.
Other Materials
Tool Steel O1
Tool steel O1 is an oil-hardening, non-deforming tool steel that belongs to the cold work tool steel group. It has high wear resistance, good dimensional stability, toughness, and machinability.
More info about Tool Steel O1
Tool Steel D2
Tool steel D2 is a high-carbon, high-chromium, air-hardening steel with excellent wear resistance, high compressive strength, and good toughness.
More info about Tool Steel D2
Tool Steel A2
Tool steel A2 is an air-hardening, cold-work tool steel commonly used in CNC machining due to its excellent wear resistance and toughness.
More info about Tool Steel A2
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