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11L17 Leaded Carbon Steel Round Bar

11L17 Leaded Carbon Steel Round Bar: 11L17 is a leaded, resulfurized low-carbon grade used for turned components; the lead addition is distinct from standard 1117.

Download Mozaic 11L17 Leaded Carbon Steel Round Bar reference sheet (PDF)

11L17 Leaded Carbon Steel Round Bar — Technical Purchasing Guide

Grade, condition and processing reference information
Item Reference / purchasing detail
Material/product 11L17 Leaded Carbon Steel Round Bar
Grade identity and purchase standard SAE/AISI 11L17; check bar product standard and chemistry
Delivery or treatment condition Specify cold-drawn or hot-rolled stock and any case-hardening requirements
Typical applications Machined fittings, gear-related parts and fasteners
Selection concern 11L17 and 1117 are not automatically equivalent in lead-sensitive applications.
Mozaic processing Precision round-bar grinding, straightening, cutting, chamfering and packing when feasible

Technical overview, not a certified composition or mechanical-property report. Confirm grade designation, product standard, required condition and heat-lot documentation for every order.

Why Material Grade and Condition Matter

11L17 and 1117 are not automatically equivalent in lead-sensitive applications. Representative components include machined fittings, gear-related parts and fasteners. Different grades can share a broad alloy family while requiring distinct finishing, inspection or material qualification. Procurement and engineering should agree on the supplied condition and part performance before accepting substitutions.

Precision Bar Supply and Processing

Mozaic Precision Metals offers project-specific centerless grinding, bar straightening, polishing, saw cutting, chamfering and packaging. Our quoting process considers material condition, diameter, length and the required final surface. Diameter tolerance, straightness and roughness should be specified and inspected separately.

Related Grades and Comparison Resources

  • 1117 steel — related application or grade information
  • 12l14 steel — related application or grade information

What to Include in Your RFQ

Send the alloy or grade, appropriate standard/revision, raw stock size, target finished OD, length, quantity, specified heat-treated or drawn condition, straightness, finish and certificates. Request a quote online, email sales@mozaicprecision.com or call 847-637-8379.

11L17 Steel Round Bar for Precision Machining

11L17 steel round bar is a low-carbon, leaded free-machining steel known for its excellent machinability, consistent cutting performance, and suitability for high-volume precision manufacturing. With controlled additions of lead and sulfur, AISI 11L17 steel promotes efficient chip formation, reduced cutting resistance, and improved machinability.

Key Benefits of 11L17 Steel

  • Excellent Machinability – Lead and sulfur additions promote efficient machining, improved chip control, and reduced tool wear.
  • Case-Hardening Capability – Suitable for carburizing applications requiring a hard, wear-resistant surface and a tougher core.
  • Production Efficiency – Well suited for automatic screw machines, CNC turning, and high-volume component manufacturing.
  • Dimensional Precision – Precision grinding can produce specified diameters, surface finishes, and dimensional consistency.
  • Versatile Applications – Commonly used for pins, shafts, bushings, fittings, studs, and other machined components.

11L17 Steel Supply from Mozaic Precision Metals

At Mozaic Precision Metals, we supply and process 11L17 steel round bars for manufacturers requiring reliable material quality and precision dimensional control.

Our services include centerless grinding, bar straightening, polishing, saw cutting, and custom bar processing to meet your production requirements.

Contact Mozaic Precision Metals to request a quote for 11L17 steel round bar in your required diameter, length, quantity, and material condition.

11L17 Steel Properties, Composition, and Applications

AISI 11L17 steel is a leaded, resulfurized, low-carbon free-machining steel developed for efficient production of precision-machined components. Its chemical composition promotes machinability while retaining properties suitable for a range of industrial applications.

11L17 is particularly useful for manufacturers operating CNC turning centers, automatic screw machines, and other high-volume machining equipment where chip control, cutting performance, and dimensional consistency are important.

Chemical Composition of 11L17 Steel

Typical AISI 11L17 chemistry includes the following elements:

Element Typical Range
Carbon (C) 0.14–0.20%
Manganese (Mn) 1.00–1.30%
Sulfur (S) 0.08–0.13%
Lead (Pb) 0.15–0.35%
Phosphorus (P) 0.04% maximum
Iron (Fe) Balance

Chemical composition should be verified against the applicable material specification and mill test report.

Mechanical Properties and Machinability

11L17 steel is valued primarily for its machinability and ability to undergo case hardening.

Key characteristics include:

  • Free-Machining Performance: Lead and sulfur promote chip formation and reduce cutting resistance during machining.
  • Case Hardening: Carburizing can produce a hardened surface while retaining a comparatively tougher, lower-carbon core.
  • Dimensional Control: Precision grinding can improve finished diameter consistency and surface quality.
  • Mechanical Strength: Tensile strength, yield strength, and hardness depend on bar dimensions, processing condition, and any subsequent heat treatment.
  • Surface Protection: As a carbon steel, 11L17 may require protective coatings or finishes for use in corrosive environments.

Because 11L17 contains lead and elevated sulfur, welding is generally not recommended without a properly evaluated procedure.

Common Applications of 11L17 Steel Round Bar

11L17 steel is commonly selected for components requiring efficient machining and consistent production quality.

Precision Machining

  • Automatic screw-machine components
  • CNC-turned fittings and couplings
  • Threaded studs and fasteners
  • Bushings, sleeves, and spacers

Automotive and Industrial Manufacturing

  • Precision pins and shafts
  • Case-hardened components
  • Small gears and pinions
  • Mechanical connectors and fittings

Hydraulic and General Machinery

  • Machined adapters
  • Industrial fittings
  • Equipment components
  • Custom production parts

Material suitability should always be evaluated against the intended application’s mechanical, environmental, and regulatory requirements.

11L17 vs. 1117 Steel

Both AISI 1117 and 11L17 belong to the free-machining carbon steel family, but their compositions differ.

1117 Steel is a resulfurized carbon steel designed for improved machinability.

11L17 Steel incorporates an additional lead component to further improve machining performance, making it useful for production environments where cutting efficiency and tool performance are priorities.

The appropriate grade depends on machining requirements, material specifications, and application restrictions.

Precision Ground 11L17 Steel Round Bar

At Mozaic Precision Metals, we provide 11L17 steel round bar supply and value-added processing services for precision manufacturing applications.

Our capabilities include:

  • Centerless Grinding – For specified outside diameters, tolerances, and surface finishes.
  • Bar Straightening – To address straightness requirements for machining and bar-fed applications.
  • Polishing – For improved surface finish and appearance.
  • Saw Cutting – Custom cut lengths for production needs.
  • Bar Supply and Packaging – Material sourcing and preparation for shipment.

Our ISO 9001:2015-certified quality management system supports consistent processes and attention to customer specifications.

Request a Quote for 11L17 Steel Round Bar

Mozaic Precision Metals works with manufacturers requiring precision ground steel bars, consistent material dimensions, and dependable processing services.

Whether your application requires standard bar stock or precision grinding to a specified finished diameter, our team can review your requirements and provide a tailored quotation.

For accurate pricing, provide your required material specification, bar diameter, length, quantity, tolerances, and delivery requirements.

Request a Quote from Mozaic Precision Metals