Premium Quality SG Iron Round Bar | Ductile Cast Iron Rods
Product Introduction
SG Iron Round Bar, also known as Spheroidal Graphite Iron or Ductile Cast Iron Bar, is a premium-grade engineering material widely used in mechanical and structural applications. Unlike traditional grey cast iron, SG Iron contains spheroidal graphite, which gives it superior strength, toughness, and ductility while maintaining excellent machinability and wear resistance.
SG Iron Bars are ideal for components that require high fatigue strength and resistance to impact, such as hydraulic cylinder parts, automotive components, bearings, gears, and general machinery. They are available in a range of grades such as GGG40 (EN-GJS-400-15), GGG50 (EN-GJS-500-7), and ASTM A536 65-45-12, ensuring performance across various applications.
- ductile iron bars are manufactured in accordance with international standards.The commonly used steel grades of ductile iron bars are expressed in different ways according to different countries and standards.
The following are the commonly used ductile iron steel grades (grades) under several common standard systems:
| ASTM A536 | EN 1563 | ISO 1083 | JIS G5502 |
| 60-40-18 | EN-GJS-400-15 | GGG40 | FCD400 |
| 65-45-12 | EN-GJS-450-10 | - | FCD450 |
| 80-55-06 | EN-GJS-500-7 | GGG50 | FCD500 |
| 100-70-03 | EN-GJS-600-3 | GGG60 | FCD600 |
Product Description
Premium Quality SG Iron Round Bar is specifically designed to meet the needs of precision machining industries. Also referred to as Spheroidal Graphite Iron or ductile cast iron, this material offers a unique combination of superior strength, excellent wear resistance, and outstanding machinability. Thanks to its microstructure containing spherical graphite nodules, it provides higher tensile strength and better elongation compared to traditional gray iron, while maintaining ease of casting.
Product parameters
| Product Name | Ductile Iron Bar/Ductile Iron Round Bar |
| Standard | ASTM A536 EN 1563 ISO 1083 JIS G5502 |
| Outer Diameter (OD) | 20 mm – 600 mm (customizable) |
| Length | 1 m – 6 m (customizable) |
| Tensile Strength | 400 – 800 MPa |
| Yield Strength | 250 – 500 MPa |
| Hardness | 130 – 280 HB |
| Heat Treatment | annealed, normalized, or quenched and tempered |
| Surface Condition | As-cast / Machined / Peeled |
| Elongation | 2% – 18% |
| Delivery status | Round bar/square bar/flat bar or cut to demand |
Product Applications
SG iron bar is ideal for CNC machining, offering excellent chip control and reduced tool wear during operations such as turning, milling, drilling, and boring. Its consistent mechanical properties make it a preferred choice for manufacturing hydraulic components, machine bases, structural supports, and high-load industrial parts. The surface finish and dimensional stability of the bar are optimal for producing complex geometries with high accuracy.
> CNC precision parts and prototypes
> Hydraulic cylinder components
> Engine blocks and flywheels
> Bearing housings and machine columns
> Pump and compressor casings
> General engineering applications requiring strength and precision
Product Display
Inspection and packaging drawings
| Keywords
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