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Special Alloy Steel

Alloy Steel Coil

For additional savings, contact us to discuss our stock and release programs that are available for all alloy steel coil.

Strength, Yield Strength ksi(MPa), Tensile Strength ksi(MPa): Stronger, 35-100 (240-690)

  • For higher strength and lower weight, consider Advanced High Strength Steels

Formability: % Elongation: Good

Corrosion Resistance: Better

  • For better corrosion resistance, consider Coated Steel

Learn More

An alloy is metal prepared by adding other metals or non-metals to a basic metal to secure desirable properties. Alloy steel is steel containing substantial quantities of elements other than carbon and the commonly-accepted limited amounts of manganese, sulfur, silicon, and phosphorus. Addition of such alloying elements is usually for the purpose of increased hardness, strength, or chemical resistance. The elements most commonly used for forming alloy steels are: nickel, chromium, silicon, manganese, tungsten, molybdenum, and vanadium.

Siegal Steel is dedicated to providing the special alloys our customers need when they need them.  

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Alloy Steel Inventory

  • Steel Grades: 4130, 5150
  • Thickness: .100 - .312
  • Width: .5" - 72"
  • Products: Ribbon Coils, Oscillate coils, Cut Lengths
  • Processes: Edging, Annealing
  • Chemistry: up to several percent of Mn, Si, Cr, Mo.
  • Cost: Medium

Why Alloys?

To improve strength while at the same time to save weight. Some alloys also improve durability. Alloys also enhance heat treatability.

Cost Savings?

Cost savings occur by reducing the thickness of the metal used. Due to its increased strength, thickness reduction and weight savings are easier to accomplish. Typical examples may be found in the automotive industry.

Why Siegal? 

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In addition to our stock & release programs such as Just-In-Time inventory management, our ability to apply our product knowledge and experience to a range of customer issues allows us to differentiate ourselves from the competition. With quick turnaround times available for expedited lead time, we ensure our clients receive the right product when they need it. As a market leader in customer service and our mission to provide the most cost-conscious solutions to our clients, Siegal Steel is the partner you need.


Our knowledge and experience give your organization accurate delivery of High Carbon, Low Carbon, Stainless Steel products processed and packaged to your exact specifications.

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