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4142 Alloy Stock

4142 Steel Round Bar – Reliable Stock for Optimum Machinability

4142 alloy steel round bar is a medium-carbon steel enhanced with chromium and molybdenum, providing increased strength, toughness, and wear resistance. Known for its versatility and performance, 4142 round bar stock is widely used in the production of high-stress machine parts and tooling components.

Key Properties of 4142 Alloy Steel

The addition of chromium and molybdenum strengthens 4142 steel, making it suitable for demanding applications. To achieve optimum machinability, the material is typically annealed to a structure ranging from coarse pearlite to coarse spheroidite.

Common Applications

Mozaic Precision Metals supplies 4142 steel round bar for industries that require durable and machinable steel solutions. Typical uses include:

  • Forged gears and flanges
  • Collets, arbors, and spindles
  • Axles and clutch components
  • Forming rolls and machine tools
  • High-strength industrial parts

Forging and Heat Treatment Guidelines

  • Forging: Begin forging at approximately 2150°F (1175°C) and continue down to around 1700°F (925°C).
  • Austenitizing: Heat to about 1550°F (845°C), then cool to 1390°F (755°C) at a rate of 25°F (14°C) per hour before air cooling.

With its balance of machinability, strength, and wear resistance, 4142 alloy round bar is a reliable choice for manufacturers who need consistent performance in high-demand applications.

4142 Alloy Steel Round Bar Stock

At Mozaic Precision Metals, we supply 4142 alloy steel round bar stock engineered for strength, durability, and reliability in demanding applications. This alloy offers superior toughness and fatigue strength compared to standard carbon steels, making it the material of choice for industries that require dependable performance under stress.

Why Choose 4142 Alloy Steel?

4142 alloy steel is influenced by its alloying elements and thermal treatments, giving it exceptional machinability, hardness, and wear resistance. These properties make it an excellent option for forging applications where standard carbon steels fall short. When you need a material that can handle challenging conditions and deliver consistent results, 4142 round bar provides the solution.

Applications of 4142 Alloy Steel

  • Automotive Industry – Commonly used for engine gears, bolts, nuts, crankshafts, and other high-stress components.
  • Oil & Gas Industry – Trusted for spindles, couplings, and mechanical parts that require both strength and toughness.
  • General Manufacturing – Ideal for shafts, tooling, and heavy-duty parts where fatigue resistance is critical.

Dependable Supply from Mozaic Precision Metals

Our leadership team has over 60 years of combined experience in precision grinding and metal supply, giving us the expertise to deliver top-quality 4142 alloy steel bar stock tailored to your requirements. Whether you need bulk orders or custom sizes, Mozaic Precision Metals is committed to providing durable, high-performance alloys for your industry.

Get started today: Contact Mozaic Precision Metals to request a custom quote and secure the 4142 alloy steel round bar stock you need for your next project.