Virami Steel Hub is a trusted manufacturer, supplier, stockist, and exporter of IS 319 Free Cutting Round Bars in Mumbai, India. We supply these premium free-cutting bars across India and export globally to countries including the USA, Europe, Middle East, Canada, Australia, and Southeast Asia.
IS 319 Free Cutting Bars are specifically designed for high-speed machining and precision manufacturing, offering excellent machinability, dimensional accuracy, and smooth surface finish. Widely used in automotive, engineering, electrical, and general industrial applications, these bars ensure high productivity and low tool wear.
IS 319 Free Cutting Round Bars are round bars made from low-carbon, leaded or bismuth-added steels, engineered for superior machinability without compromising strength and durability.
Key features include:
These bars are commonly used in automotive components, fasteners, gears, bushings, and electrical parts where precise machining is essential.
These features make IS 319 free cutting bars highly valued in precision manufacturing and high-volume industrial production.
IS 319 free cutting steel is a low-carbon, high-machinability alloy. Typical chemical composition:
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.15 – 0.35% |
| Manganese (Mn) | 0.30 – 0.80% |
| Sulfur (S) | 0.08 – 0.15% |
| Phosphorus (P) | 0.04 – 0.08% |
| Lead (Pb) or Bismuth (Bi) | 0.15 – 0.35% |
| Iron (Fe) | Balance |
Role of Alloying Elements
The precise alloying ensures efficient machining while maintaining adequate mechanical strength.
IS 319 free cutting round bars provide a balance of machinability and strength:
These properties make the bars suitable for fasteners, shafts, gears, and other machined components where precision and efficiency are critical.
These physical properties ensure stable machining, minimal distortion, and reliable performance during industrial applications.
IS 319 free cutting bars are generally supplied in the annealed condition, which provides:
Typical Heat Treatment Process:
Proper heat treatment ensures optimum machinability and consistent performance for high-volume production.
IS 319 free cutting bars are highly machinable due to lead or bismuth addition:
Machinability ensures high productivity and lower manufacturing costs.
Inconel 925 is moderately difficult to machine due to its high strength and work hardening:
Weldable IS 319 bars provide versatile applications in both machined and fabricated components.
IS 319 free cutting round bars are supplied in:
Standards:
Size Range:
Surface Finish:
IS 319 free cutting bars are widely used in industrial, automotive, and precision engineering applications:
Automotive Applications
Industrial & Mechanical Applications
Electrical & Engineering Applications
Other Applications
These advantages make IS 319 free cutting bars a preferred choice for high-precision, high-volume manufacturing.
All IS 319 free cutting bars undergo:
Mill Test Certificates (MTC) are provided per IS / ASTM standards. Third-party inspection is available on request.
IS 319 Free Cutting Round Bars are premium high-machinability steel bars offering superior machinability, dimensional accuracy, and surface finish. Ideal for automotive components, precision engineering, fasteners, and industrial machinery, IS 319 bars ensure high productivity, low tool wear, and reliable performance.
Virami Steel Hub supplies certified IS 319 Free Cutting Round Bars with customizable sizes, lengths, and surface finishes, making them the preferred choice for high-volume, precision machining, and industrial applications.
