5160 Spring Steel

Description

5160 is a high-carbon, chromium alloy steel known for its excellent toughness, durability, and resistance to deformation. It is primarily used in applications requiring strong, reliable, and flexible properties.

Applications

5160 is commonly used in applications such as leaf springs, coil springs, flat springs, automotive and truck suspension components, knives, and swords.

Blacksmith Applications

5160 Forging Temperature

Forging should be done between 2150°F to 2200°F (1177°C to 1204°C), followed by slow cooling in a furnace or insulating material.

5160 Heat Treatment

5160 Annealing Temperature

Annealing is typically performed at 1450°F to 1500°F (788°C to 816°C) for a sufficient amount of time, followed by slow cooling in the furnace to relieve internal stresses.

5160 Normalizing Temperature

Normalizing can be carried out at 1600°F to 1650°F (871°C to 899°C) for a proper soak time, followed by air cooling.

5160 Hardening Temperature

Hardening is achieved by heating the steel to 1475°F to 1550°F (802°C to 843°C) and then quenching in oil or water to achieve the desired hardness.

5160 Tempering Temperature

Tempering should be performed between 400°F to 700°F (204°C to 371°C) to achieve the desired balance between hardness and toughness.

Machinability

5160 has a machinability rating of 50, indicating moderate machinability. It can be machined using appropriate tools and techniques, but the high carbon content can make it more challenging than low-carbon steels.

Weldability

5160 has fair weldability when proper preheating and post-weld heat treatment are employed. It is recommended to use low-hydrogen welding methods and suitable filler materials.

Chemical Analysis

The chemical make up of this steel.

Chemical Content (%)
Carbon (C)0.56-0.64
Manganese (Mn)0.75-1.00
Phosphorus (P)0.035
Sulfur (S)0.040
Silicon (Si)0.15-0.35
Chromium (Cr)0.70-0.90
Iron (Fe)Balance