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8620 Steel

Top Quality 8620 Round Bar Stock for Your Machinery

8620 round bar stock is a low-carbon alloy steel known for its excellent toughness, core strength, and wear resistance. With its unique chemical composition, 8620 is widely used in the production of gears, crankshafts, axles, bushings, heavy-duty pins, bolts, springs, and hand tools, making it a preferred choice for critical machinery parts.

Chemical Composition of 8620 Alloy Steel

The balanced alloying elements in 8620 steel provide its superior performance characteristics:

  • Carbon (C): 0.18–0.23%
  • Chromium (Cr): 0.40–0.60%
  • Manganese (Mn): 0.70–0.90%
  • Molybdenum (Mo): 0.15–0.25%
  • Nickel (Ni): 0.40–0.70%
  • Silicon (Si): 0.15–0.35%
  • Phosphorus (P): 0.035% max
  • Sulfur (S): 0.04% max
  • Iron (Fe): Balance

Key Mechanical Properties

  • Density: 0.284 lb/in³
  • Ultimate Tensile Strength: 92 ksi
  • Yield Strength: 52 ksi
  • Shear Strength: 59 ksi
  • Hardness: Rockwell B89 / Brinell 183
  • Elongation at Break: 26%
  • Reduction of Area: 60%
  • Poisson’s Ratio: 0.29
  • Machinability: 65%
  • Melting Point: 2,580–2,650°F
  • Thermal Conductivity: 323 BTU-in/hr-ft²-°F
  • Specific Heat: 0.114 BTU/lb-°F

Applications of 8620 Round Bar

Thanks to its strength, toughness, and wear resistance, 8620 steel is widely used for:

  • Gears and gear shafts
  • Crankshafts and axles
  • Bushings and couplings
  • Heavy-duty pins and bolts
  • Hand tools and springs

At Mozaic Precision Metals, we supply precision-ground 8620 round bar stock in custom and standard sizes to meet the needs of industries requiring strength, durability, and consistency in their machinery parts.

Alloy 8620 Steel Bar Applications

8620 alloy steel bar is a low-alloy, nickel-chromium-molybdenum steel renowned for its toughness, fatigue strength, and outstanding machinability. With its excellent balance of core toughness and surface hardenability, 8620 has become a preferred choice for industries requiring reliable performance under heavy loads and stress.

Key Applications of 8620 Alloy Steel

  • Automotive Industry: Widely used for engine gears, crankshafts, bolts, and fasteners that demand strength and wear resistance.
  • Oil & Gas: Applied in spindles, couplings, and drilling components where durability and toughness are critical.
  • Heavy Equipment: Ideal for shafts, axles, and other high-stress parts in construction and agricultural machinery.
  • Industrial Manufacturing: Used in machine components requiring precision machining and long service life.

Why Choose 8620 Steel?

  • Excellent Toughness: Strong and durable under repeated impact and stress.
  • High Fatigue Strength: Maintains performance in rotating and high-stress applications.
  • Case Hardening Capability: Carburizes well to achieve a hard, wear-resistant surface with a tough core.
  • Outstanding Machinability: Allows for efficient production of precision parts with tight tolerances.

8620 Alloy Steel from Mozaic Precision Metals

At Mozaic Precision Metals, we supply premium-grade 8620 alloy steel round bars, precision-ground for superior surface finish and tight tolerances. Our products are trusted across automotive, oil & gas, and heavy equipment sectors for their consistency, strength, and performance.

With over 60 years of combined expertise in precision grinding, our leadership team ensures that every bar meets the highest industry standards. Whether you require bulk supply or custom dimensions, Mozaic Precision Metals delivers steel you can rely on.

Contact us today to request a quote for 8620 steel round bar and discover how our precision-ground solutions can support your next project.

Get the Best 8620 Bar Stock for Your Next Project

At Mozaic Precision Metals, we supply premium-grade 8620 carbon steel round bar stock trusted across industries for its toughness, wear resistance, and durability. Known for its ability to combine strength with excellent hardenability, 8620 steel is a versatile alloy that performs reliably in demanding applications.

Our 8620 bar stock is lightweight for its strength, highly durable, and delivers consistent heat treatment results with uniform hardness throughout. This makes it ideal for industries that require dependable performance under stress and long service life.

Why Choose 8620 Carbon Steel Round Bar?

  • Exceptional Toughness: Provides strength and durability for critical applications.
  • Wear Resistance: Maintains performance under heavy loads and constant friction.
  • Reliable Heat Treatment: Responds well to carburizing and hardening, offering a strong case with a tough core.
  • Versatility: Suitable for gears, shafts, fasteners, and other precision-engineered parts.

8620 Bar Stock from Mozaic Precision Metals

With over 60 years of combined expertise in precision grinding, our leadership team ensures that every 8620 round bar meets the highest standards of consistency and performance. Whether you need custom dimensions, bulk orders, or precision-ground finishes, we deliver materials you can rely on.

Contact Mozaic Precision Metals today to request a quote for 8620 carbon steel round bar stock and equip your business with top-quality materials built for performance.