Request A Quote
Request A Quote

41L40 Steel

Introduction to 41L40 Steel Round Bar

41L40 alloy steel round bar is a versatile material that combines carbon, manganese, chromium, and molybdenum to deliver strength, durability, and excellent machinability. Known for its high hardenability, 41L40 steel can be heat-treated to achieve superior hardness and wear resistance, making it a preferred choice for demanding industrial applications.

Chemical Composition

The unique blend of alloying elements gives 41L40 steel its reliable performance:

  • Carbon: ~0.40%
  • Manganese: ~0.75%
  • Chromium: 0.80% – 1.10%
  • Molybdenum: 0.15% – 0.25%

This composition ensures excellent hardness penetration, uniformity, and high tensile strength under a wide range of conditions.

Key Benefits of 41L40 Round Bar

  • High Hardenability: Can be heat-treated for superior hardness, strength, and wear resistance.
  • Excellent Machinability: Easy to machine in heat-treated conditions without sacrificing performance.
  • High-Temperature Strength: Provides good resistance to creep at service temperatures up to 1000°F (538°C).
  • Forging Capability: Self-scaling properties make it well-suited for forging operations.

Applications

Mozaic Precision Metals supplies 41L40 steel round bar for industries that demand both strength and machinability. Common uses include:

  • Machinery and tooling components
  • Forged industrial parts
  • Shafts, spindles, and arbors
  • Automotive and aerospace components
  • Heavy-duty gears and machine rolls

With its combination of strength, uniformity, and ease of machining, 41L40 steel round bar remains a trusted material for manufacturers across multiple industries.

Best 41L40 Steel Round Bar Supplier

Mozaic Precision Metals is your trusted source for high-quality 41L40 and 41L42 alloy steel round bar stock. Engineered for strength, toughness, and machinability, these chromium-molybdenum steels are ideal for demanding industrial applications where performance and reliability are critical.

Why Choose 41L40 and 41L42 Alloy Steel?

41L40 and 41L42 steels are enhanced variants of 4140, offering the same durability and fatigue strength with the added benefit of improved machinability. Their balanced composition makes them suitable for precision machining, forging, and fabrication in industries where efficiency and toughness go hand in hand.

What You Can Expect from Mozaic Precision Metals

  • High-Quality Materials – Sourced from top-tier mills and manufactured to meet strict industry standards.
  • Custom Sizes & Shapes – Cutting and shaping services tailored to your exact specifications.
  • Quick Turnaround – Fast delivery times for both standard and custom orders.
  • Competitive Pricing – Exceptional value without compromising on material quality.
  • Expert Technical Support – Guidance from an experienced team with over 60 years of combined knowledge in alloy steel supply and precision grinding.

Industries That Trust 41L40 & 41L42 Alloy Steel

Mozaic Precision Metals supplies these alloys for applications across:

  • Manufacturing and machining
  • Automotive components such as gears, shafts, and fasteners
  • Aerospace parts requiring high strength and durability
  • Oil and gas equipment exposed to stress and wear

Get Started Today: Contact Mozaic Precision Metals to request a custom quote on 41L40 or 41L42 alloy steel round bar stock. We deliver the quality materials you need to keep your operations moving forward.

What is 41L42 Steel and Its Applications?

41L42 steel is a chromium-molybdenum alloy designed for strength, toughness, and wear resistance in demanding industrial environments. Classified as a low-carbon alloy steel, it offers excellent machinability—especially in heat-treated conditions—making it a popular choice across multiple industries.

Chemical Composition of 41L42 Steel

  • Carbon (C): 0.40%
  • Chromium (Cr): 0.90–1.20%
  • Molybdenum (Mo): 0.15–0.25%
  • Manganese (Mn): 0.75–1.00%

This combination of chromium and molybdenum provides excellent hardness penetration and uniformity, making 41L42 steel both strong and reliable under heavy stress.

Applications of 41L42 Steel

  • Gears and Shafts: High strength and wear resistance make it ideal for gears, shafts, and other rotating components.
  • Machine Parts: Commonly used for bolts, nuts, and screws due to its toughness and machinability.
  • Automotive & Aerospace: Trusted for crankshafts, axles, and landing gear where strength and durability are critical.
  • Oil & Gas: Used in drill collars, subs, and other critical parts exposed to extreme wear and stress.

Why Choose 41L42 from Mozaic Precision Metals?

At Mozaic Precision Metals, we supply 41L42 round bars with precision grinding and custom machining options to meet your exact specifications. Our experience in alloy steel ensures consistent quality, uniform hardness, and performance you can rely on for mission-critical applications.