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A2 Tool Steel

What is A2 Tool Steel?

A2 tool steel round bar stock is an air-hardening alloy valued for its balance
of toughness, wear resistance, and excellent dimensional stability during heat
treatment. Positioned between oil-hardening O1 and high-carbon, high-chromium
D2 tool steel, A2 offers machinists and toolmakers a versatile and dependable
option for demanding applications.

Key Properties of A2 Tool Steel

  • Toughness: Withstands impact and shock loading without cracking.
  • Dimensional Stability: Maintains precise tolerances after heat treatment.
  • Wear Resistance: Offers reliable resistance in high-use applications.
  • Machinability: Rated at 70% compared to 1% carbon steel, allowing efficient processing.

Chemical Composition of A2 Tool Steel

  • Chromium (Cr): 5.0%
  • Molybdenum (Mo): 1.0%
  • Vanadium (V): 0.25%
  • Density: 7861 kg/m³
  • Specific Gravity: 7.86
  • Modulus of Elasticity: 30×106 psi (207 GPa)

Common Applications of A2 Tool Steel

Due to its durability and versatility, A2 round bar is widely used in:

  • Chuck jaws and dowel pins
  • Woodworking and cutting tools
  • Hammers and industrial knives
  • Punches, dies, and gauges
  • Plastic injection molds and tooling

At Mozaic Precision Metals, we supply precision-ground A2
tool steel bar stock tailored to your requirements. Its unique combination of
toughness, dimensional stability, and wear resistance makes it a top choice
for toolmaking and machining industries.

Request a quote today to secure high-quality A2 tool
steel for your next project.

Choose a Reliable A2 Tool Steel Supplier

At Mozaic Precision Metals, we provide premium A2 tool steel
round bar stock engineered for exceptional wear resistance, toughness, and
dimensional stability. A2 tool steel is an air-hardening alloy widely used in
tooling applications that demand precision and long-lasting performance.

With over 60 years of combined expertise in precision grinding and metal
supply, our leadership team ensures every bar we deliver meets strict quality
standards. Whether you require bulk orders, custom sizes, or precision-ground
finishes, Mozaic Precision Metals delivers the reliable materials your
projects demand.

Don’t settle for less when it comes to critical tooling applications. Choose
Mozaic Precision Metals as your trusted A2 tool steel
supplier. Request a custom quote today and secure the
durability and consistency your next project requires.

Applications of A2 Tool Steel Round Bar

A2 tool steel round bar is a versatile, air-hardening alloy known for its
exceptional toughness, high fatigue strength, and outstanding machinability.
Its durability and ability to hold precise tolerances make it a reliable
choice across industries, from automotive to construction.

Key Benefits of A2 Round Bar

  • Excellent Toughness: Withstands impact and heavy loads without cracking or deforming.
  • Dimensional Stability: Retains shape and accuracy during heat treatment and machining.
  • High Strength-to-Weight Ratio: Ideal for demanding mechanical applications.
  • Machinability: Easier to cut, drill, and shape compared to many other tool steels.
  • Corrosion Resistance: Offers reliable performance in harsh environments.

Common Applications of A2 Tool Steel Round Bar

  • Automotive: Axles, gears, engine components, and transmission parts.
  • Industrial Tooling: Blades, knives, punches, and dies.
  • Construction & Mining: Components exposed to high wear and impact.
  • General Engineering: Shafts, rods, and precision parts requiring consistent performance.

At Mozaic Precision Metals, we supply precision-ground A2
tool steel round bar in a variety of sizes and finishes to meet your exact
project specifications. Whether your application calls for toughness,
machinability, or long service life, A2 delivers proven results.

Request a quote today to source premium A2 round bar
stock for your next project.