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1215 Steel

1215 steel is popular in various industries due to its exceptional machinability and other advantages.

1215 Carbon Steel

The 1215 carbon steel contains higher levels of phosphorus and sulfur, which result in cleaner finishes and tighter tolerances. As a result, it is considered a better alternative to 1018 carbon steel.


1215 carbon steel is a low-carbon, resulfurized and rephosphorized steel that belongs to the family of free-machining steels. 

Adding sulfur and phosphorus to the steel composition promotes the formation of fine, uniform, and dispersed particles, which act as chip breakers during machining operations. 

As a result, this carbon steel exhibits excellent machinability, allowing it to be easily machined into intricate and precise components.

Regarding its mechanical properties, this carbon steel has moderate strength, good toughness, and high ductility. Its tensile strength typically ranges from 78,000 to 85,000 psi, while its yield strength is about 60,000 psi. 

The steel also has good wear resistance, making it suitable for applications that involve sliding or abrasive wear.

1215 carbon steel is commonly used to manufacture precision machined components, such as gears, bushings, couplings, and fasteners.

It is also used in the production of hydraulic fittings, shafts, and studs, as well as in the construction of various mechanical parts and assemblies.

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Properties of 1215 Steel

Tensile Strength78300 psii
Yield Strength60200 psi
Hardness (Brinell)167
Hardness (Knoop)188
Hardness (Rockwell)85
Hardness (Vickers)175
Density0.284 lb/in³

The Common Applications

1215 steel is helpful in various industries due to its excellent machinability and mechanical properties. Here are some of the typical applications of this steel:

  1. Machined components: 1215 steel is a popular choice for manufacturing precision machined components such as bushings, gears, couplings, and fasteners. Its superior machinability allows for the easy production of intricate and precise shapes.

  2. Hydraulic fittings: The steel’s good wear resistance makes it an ideal choice for producing hydraulic fittings that require high strength and durability.

  3. Shafts and studs: This steel is often used to produce posts and studs due to its moderate strength and high flexibility, allowing long and slender components.

  4. Construction materials: The steel’s good mechanical properties make it suitable for use in the construction of various mechanical parts and assemblies, such as connecting rods, cams, and sprockets.

  5. Automotive components: The steel is commonly used to produce automotive components such as steering knuckles, suspension, and brake due to its excellent machinability and high strength.

This carbon steel is a versatile and economical material with good machinability, moderate strength, and excellent wear resistance. Its combination of properties makes it an ideal choice for applications that require high precision, tight tolerances, and reliable performance.

Contact us today to learn more about our carbon steel stock or request a quote.