Carbon & Low Alloy Steel

Carbon steel is a widely used metal alloy. It is comprised of iron and carbon, and typically contains up to 2.0% carbon by weight. This alloy can be grouped into 3 main categories: low carbon steel (0.04 to 0.30% carbon), medium carbon steel (0.31 to 0.60% carbon), and high carbon steel (0.61 to 1.50% carbon). The amount of carbon in the steel makes the material suitable for different purposes: low carbon steel can be used to make fences, while medium carbon steel is suited for erecting bridges, and high carbon is used in cast iron pots and pans.

Low-alloy steels are different from other steels in that they are designed to meet specifically mechanical properties rather than specific chemical compositions. Low-alloy steels have a wide variety of uses and industry applications. Some low-alloy steels are used to build bridges, off-highway vehicles, ships, and submarines, while others are used in the oil & gas industries, earthmoving and construction equipment manufacturing, pipelines, pressure vessels, and structural applications.

Engineered Alloys offers a variety of carbon & low-alloy steels to meet our clients’ needs. Contact us today to request a quote and learn more about our products!

Alloy Specification Carbon Manganese Silicon Chromium Nickel Molybdenum Phosphorus Sulfur Iron
1020 Mil-S-81591 IC 1020 0.15 to 0.25 0.30 to 0.50 0.20 to 1.00 0.04 0.04 Balance
1020 ASTM A216 WCC 0.25 1.20 0.50 0.50 0.50 0.20 0.04 0.045 Balance
1025 ASTM A216 WCB 0.30 1.00 0.60 0.50 0.50 0.20 0.04 0.045 Balance
1025 ASTM A352 LCB 0.30 1.00 0.60 0.50 0.50 0.20 0.04 0.045 Balance
1030 Mil-S-22141B/81591 IC 1030 0.25 to 0.35 0.70 to 1.00 0.20 to 1.00 0.04 0.04 Balance
1040 Mil-S-22141B/81591 IC 1040 0.35 to 0.45 0.70 to 1.00 0.20 to 1.00 0.04 0.04 Balance
1050 Mil-S-22141B/81591 IC 1050 0.45 to 0.55 0.70 to 1.00 0.20 to 1.00 0.04 0.04 Balance
4115 ASTM A217 WC9 0.05 to 0.18 0.40 to 0.70 0.60 2.00 to 2.75 0.50 0.90 to 1.20 0.04 0.04 Balance
4130 AMS 5336 0.25 to 0.35 0.40 to 0.80 1.00 0.80 to 1.10 0.25 0.15 to 0.25 0.04 0.04 Balance
4130 Mil-S-22141B IC 4130 0.25 to 0.35 0.40 to 0.70 0.20 to 0.80 0.80 to 1.10 0.25 0.15 to 0.25 0.04 0.04 Balance
4140 AMS 5338 0.35 to 0.45 0.75 to 1.00 1.00 0.80 to 1.10 0.25 0.15 to 0.25 0.04 0.04 Balance
4140 Mil-S-22141B IC 4140 0.35 to 0.45 0.70 to 1.05 0.20 to 0.80 0.80 to 1.10 0.15 to 0.25 0.04 0.04 Balance
4340 Mil-S-22141B IC 4340 0.36 to 0.44 0.60 to 0.90 0.20 to 0.80 0.70 to 0.90 1.65 to 2.00 0.20 to 0.30 0.025 0.025 Balance
8620 Mil-S-22141B IC 8620 0.25 to 0.35 0.60 to 0.95 1.00 0.35 to 0.65 0.40 to 0.70 0.15 to 0.25 0.04 0.04 Balance

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