1055 Carbon Steel

Description

1055 is a high-carbon steel known for its excellent strength, toughness, and durability. It is commonly used in various industrial applications where a higher carbon content is required.

Applications

1055 is widely used in the manufacturing of cutting tools, knives, swords, and other blades due to its excellent edge retention and hardness. It is also commonly used in machetes, hand tools, and agricultural equipment.

Blacksmith Applications

1055 is an ideal choice for blacksmiths when forging tools, like hammers, chisels, punches, and axes, that require high hardness, impact resistance, and are subjected to heavy use.

1055 Forging Temperature

Forging should be done between 1500°F - 2200°F (816°C to 1204°C), followed by slow cooling to relieve internal stresses and improve toughness.

1055 Heat Treatment

1055 Annealing Temperature

Annealing is typically performed at 1475°F (802°C) for a sufficient amount of time, followed by slow cooling in the furnace to reduce hardness and improve machinability.

1055 Normalizing Temperature

Normalizing can be carried out at 1600°F to 1700°F (871°C to 927°C) for a proper soak time to refine the grain structure and enhance the material's mechanical properties.

1055 Hardening Temperature

Hardening is achieved by heating the steel to 1475°F to 1600°F (802°C to 871°C) and then quenching in oil or water to obtain maximum hardness and wear resistance.

1055 Tempering Temperature

Tempering should be performed between 400°F to 800°F (204°C to 427°C) to reduce brittleness and achieve desired hardness, toughness, and strength.

Machinability

1055 has a machinability rating of 45, indicating fair machinability. It requires slower cutting speeds and proper tooling to avoid work hardening and excessive tool wear.

Weldability

1055 has poor weldability due to its high carbon content. Preheating and post-weld heat treatment are essential to minimize cracking and achieve acceptable weld strength.

Chemical Analysis

The chemical make up of this steel.

Chemical Content (%)
Carbon (C)0.50-0.60
Manganese (Mn)0.60-0.90
Phosphorus (P)0.040
Sulfur (S)0.050
Silicon (Si)0.15-0.35
Iron (Fe)Balance