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Tool Steel A3

CNC-Steel-Tool-Part(1)

Material Type

Metal

Material Name

Tool Steel A3

Alternative Names

T30103 | AISI A3 | 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 FAQs

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

CNC-Tool-Steel-Parts(1)

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
CNC-TooL-Steel-D2-Parts(1)

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
CNC-Tool-Steel-Part(1)

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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