Key Considerations With 1144 Stressproof® Carbon Steel

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Carbon’s effect on the bulk mechanical properties — such as hardness, tensile strength, yield strength, and ductility — plays a significant role in the machinability of carbon steels. Steels are termed carbon steel when no minimum content is stipulated for alloying metals, including aluminum, chromium, cobalt, columbium, molybdenum, nickel, or vanadium.

One example of an alloy that provides excellent machinability and hardenability is the 1144 Stressproof® Carbon Steel. This article will walk you through this grade type’s fundamentals and key considerations.

What Is 1144 Stressproof® Carbon Steel?

1144 Stressproof® Carbon Steel is a resulfurized, medium-carbon steel with free-machining characteristics. It is a relatively new high-strength alloy with stronger properties than other steel. In addition, it has been tested to sustain 1144 lbs of force without cracking.

This carbon steel is a Niagara LaSalle Corporation product with construction, transportation, and manufacturing applications. Its high carbon and low alloy content compositions make it stronger than other steels with comparable qualities. Furthermore, it is relatively similar to alloys like A36, A283, and A572.

Important Factors About 1144 Stressproof® Carbon Steel

While various machining methods can produce high-quality, accurate parts from a wide range of materials, low machinability in metals typically results in subpar results. Consequently, selecting a steel alloy that can deliver ideal outputs while preserving material integrity is essential.

The following are some important factors about 1144 that you might want to consider during your material selection for your next machining project:

Mechanical Properties

1144 is a high-strength steel particularly formulated for structural applications. Due to its mechanical qualities, it is often used in the construction industry for reinforcing concrete, slabs, beams, and columns.

Here is a closer look at the mechanical characteristics of cold-drawn AISI 1144:

  • Density: 0.284 lb/in.3
  • Modulus of Elasticity: 29,700 ksi
  • Maximum Attainable Rockwell Hardness: B97
  • Melting Point: 2,750 °F
  • Ultimate Tensile Strength: 108 ksi
  • Yield Tensile Strength: 89.9 ksi
  • Shear Modulus: 11,600 ksi
  • Shear Strength: 73 ksi
  • Elongation at Break Percentage: 10%
  • Reduction of Area: 30%

Chemical Composition

The chemical composition of steel and its alloys is crucial in determining the metal’s physical properties and, consequently, its applications. The chemical structure of 1144 is as follows:

  • Iron: 97.50% to 98.01%
  • Manganese: 1.35% to 1.65%
  • Carbon: 0.40% to 0.48%
  • Sulfur: 0.24% to 0.33%
  • Phosphorus: 0.04%

Unlike several steel alloys, 1144 does not contain any amount of silicon, chromium, molybdenum, vanadium, or other elements.

Advantageous Characteristics

1144 Stressproof® Carbon Steel fulfills several industry quality criteria and possesses a range of beneficial properties, including the following:

  • Excellent machinability and hardenability
  • Exceptional resistance to stress and fatigue
  • Good resistance to corrosion and rust
  • High strength and stiffness for heavy-load applications
  • High surface quality
  • Low thermal expansion and contraction rates
  • Minimal risks of distortion and warping
  • Innate durability without heat treatment

Industrial Applications

1144 Stressproof® Carbon Steel is an excellent material choice for various industrial applications. It is particularly recommended for high-production automatic machine components and manufactured parts requiring greater strength and wear resistance than what can be achieved with lower carbon steels.

It is widely utilized in the construction industry, especially in manufacturing components such as the following:

  • Arbors
  • Bushings
  • Gears
  • Pinions
  • Rods
  • Shafts
  • Sleeves
  • Spindles

Choose Bergsen Metals for Your Carbon Steel Needs

Since 1974, Bergsen Metals has been providing high-quality cold-finished carbon steel. We offer an extensive selection of alloy materials, including 1018, 1214, 1215, 1144, and 1045. In addition, we expanded our services to include next-day shipping to meet the needs of many of our local customers.

We can provide carbon steel that meets your specifications for quality, ASTM standards, and quantity! Contact us today or request a quote to begin your next project with us.



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