What is AISI 1018 Steel?

1018 steel is an extremely popular low-carbon steel known for its excellent machinability, weldability, and versatility. Classified as mild or low-carbon steel, it is a popular choice in various industries due to its combination of strength, ductility, and affordability. 1018 steel is suitable for a wide range of applications, making it one of the most utilized AISI steel grades available.

AISI 1018 Steel Chemical Composition

1018 steel’s chemical composition is determined by AISI’s grading system, which classifies steel based on its chemical composition. AISI 1018 steel is composed of the following materials:

• Carbon (C): 0.15%–0.20%
• Manganese (Mn): 0.60%–0.90%
• Phosphorus (P): ≤ 0.04%
• Sulfur (S): ≤ 0.05%
• Iron (Fe): Balance

1018 steel’s low-carbon content contributes to the steel's excellent machinability and ductility, while manganese enhances its strength and toughness while aiding in deoxidation.

1018 Steel Mechanical Properties

1018 steel is an excellent choice for projects requiring a reliable, cost-effective material with moderate strength and high machinability. AISI 1018 steel mechanical properties include:

• Moderate tensile strength and hardness
• Excellent machinability
• Easily welded without pre-heating or post-welding treatments
• Enhanced ductility without fear of cracking or breaking
• Smooth surface finish

AISI 1018 Steel Applications

Since 1018 steel is highly versatile, it is used for a broad range of industries and applications, including:

• Construction – Fasteners, support structures
• Machinery – Tool bodies, machine components
• Automotive – Shafts, pins, gears
• Fabrication – Structural parts, décor
• Manufacturing – Jigs, fixtures, prototypes

AISI 1018 Steel Advantages

Whether you need durable components for machinery or aesthetically pleasing structural elements, 1018 steel delivers performance and value. Some of the distinct benefits that 1018 steel offers include the following:

• Excellent weldability for versatile fabrication.
• Smooth surface finish enhances aesthetics and reduces the need for further processing.
• Suitable for a broad range of applications due to its balanced mechanical properties.
• Affordable and widely available.
• Highly machinable for ease of shaping.

Even though 1018 steel provides exceptional benefits for a wide range of projects, it is not appropriate for applications that require extreme strength, wear resistance, or corrosion resistance.

IMS is Your Locally Trusted Metal Supply Company

With seven locations serving California, Arizona, Nevada, and Northern Mexico, IMS is a full-service metal supplier that provides a broad, in-stock selection of premium 1018 steel products. Our inventory of metal products includes various metal shapes and an extensive selection of alloys. At IMS, we offer the following advantages:

• Same-day will-call pick-up
• Next-day local delivery
• High-volume discount pricing
• Custom cut-to-size metal production
• ISO 9001 certified
• Support of Just-In-Time manufacturing processes
• No minimum purchases
• Fast credit approvals

Order AISI 1018 Steel Products Today

Contact us for more information regarding our in-stock 1018 steel options, or request a quote today. IMS offers convenient purchase options that include next-day delivery and will-call pick-up.