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Engineering Bar — Cast Iron

Cast Iron Bar.
Grey & Ductile (SG) Iron.

Continuous cast iron bar in grey iron and ductile (SG / nodular) iron grades — EN-GJL-250, EN-GJS-400C, EN-GJS-500C and EN-GJS-600C. All grades stocked 25mm to 400mm diameter, cut to any length from one piece. Bar-end colour code: orange.

25–400mmDiameter range
4 gradesGrey & ductile
1 pieceMinimum order
2–3 daysCut-to-length
Mixed profile stock in blue racking — cast iron bar alongside round bar and flat bar
About This Product

What is Cast Iron Bar?

Cast iron bar is produced by continuous casting, drawing molten iron through a water-cooled die to give a dense, sound, close-grained bar that machines cleanly with an excellent surface finish. Parkside stocks two families: grey iron, where carbon forms graphite flakes, and ductile (SG / nodular) iron, where the graphite forms spheroidal nodules.

The difference matters. Grey iron (EN-GJL-250) gives outstanding machinability and vibration damping but little ductility. Ductile iron (EN-GJS grades) keeps good machinability while adding high tensile strength, impact toughness and elongation — bridging the gap between cast iron and cast steel.

Supply

Stock & Condition.

Form: Continuous cast round bar. Size: 25mm to 400mm diameter, all grades. Condition: as-cast, turned or centreless ground to a close diameter tolerance. Colour code: orange bar-end marking.

Cut to any length from 1 piece — −0/+2mm standard cut tolerance — EN 10204 2.2 and 3.1 certificates available. Grade equivalents ›

Cast Iron Grades

Choose Your Grade.

All four cast iron grades are stocked from 25mm to 400mm diameter. Select a grade for the full data sheet, chemical composition and mechanical properties.

EN-GJL-250BS 1452 Gr.250 / Grey IronGrey cast iron — machinability & damping. Bearing housings, beds, bushes. EN-GJS-400CEN-GJS-400-15 / Ductile (SG)Ferritic ductile iron — ductile, pressure-tight. Hydraulic bodies, fittings. EN-GJS-500CEN-GJS-500-7 / Ductile (SG)General-purpose ductile iron — strength & ductility. Gears, crankshafts. EN-GJS-600CEN-GJS-600-3 / Ductile (SG)High-strength ductile iron — harder, wear-resistant. Heavy-duty gears.
Size Range

Available Sizes.

Stocked as continuous cast round bar. Cut to any length from 1 piece. −0/+2mm standard cut tolerance.

GradeEN DesignationTypeSize RangeStandard
EN-GJL-250EN-JL1040Grey iron25–400mm ⌀BS EN 1561
EN-GJS-400CEN-JS1030 / 400-15Ductile (SG) iron25–400mm ⌀BS EN 1563
EN-GJS-500CEN-JS1050 / 500-7Ductile (SG) iron25–400mm ⌀BS EN 1563
EN-GJS-600CEN-JS1060 / 600-3Ductile (SG) iron25–400mm ⌀BS EN 1563
Applications

Typical Applications.

  • Bearing housings, bushes and slideways (grey iron)
  • Machine beds, frames and bases
  • Pressure-tight hydraulic and valve bodies (ductile iron)
  • Gears, sprockets, crankshafts and drive parts
  • Pump and compressor bodies
  • Wheel hubs, rollers and wear-resistant components
Related Technical Guides

Go Deeper.

Grade Equivalents Full Stock Range Weight Calculator

Ready to Order Cast Iron Bar?

Tell us your grade, size and quantity. We confirm stock, price and delivery date on the same call.

📞 01623 687 660 Request a Quote ►