New Supreme Castings › Products › SGI (Spheroidal Graphite Iron) / Ductile Castings
SGI (Spheroidal Graphite Iron) / Ductile Castings
by New Supreme Castings Kolhapur
The name of this product is taken from the company’s own website, checked November 2026. The company has not published its specifications here yet, so ask it for the exact model, capacity and price.
Ask New Supreme Castings about SGI (Spheroidal Graphite Iron) / Ductile Castings
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What to settle before you ask for a quote
General guidance from SourceLoka for ductile iron casting; it is not this company’s specification.
- Grade, with the minimum tensile strength and elongation you need.
- Matrix or heat treatment required for hardness or wear.
- Casting weight, dimensions and tolerance class.
- Nodularity and the microstructure checks you require.
- Pressure testing or non-destructive tests for pressure-containing parts.
- Pattern ownership, machining and the certificates to be supplied.
What is a ductile iron casting, and when should you choose another type?
A small addition of magnesium or a similar element to the molten iron makes the graphite form as spheres instead of flakes. The result is a material with high strength, good ductility and shock resistance, and castings can be heat-treated for different property ranges. It is widely used for pipes and fittings, pump and valve bodies, gears, crankshafts, brackets and parts that carry tension or impact.
Ductile Iron Casting or grey iron casting? Ductile iron is stronger, tougher and can take shock loads, but it costs more and is harder to cast without defects. Grey iron is the economical choice for parts that are mostly in compression or need vibration damping.
What is SG iron?
SG iron stands for spheroidal graphite iron, another name for ductile iron. The graphite forms spheres, which makes the metal stronger and tougher than grey iron.
When should I choose ductile iron over steel?
Ductile iron castings can replace steel castings or fabrications when the shape is complex and the loads are moderate, often at lower cost. For the highest strength and toughness, or for very high temperatures, steel may be required.
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Buyer’s guide availableBefore you order
- We have not independently verified this company. A complete profile is not a certification. How we list companies
- Company website reviewed November 2026: 8 pages, used for materials, processes, industries served, address, products, identity numbers, plant and documents, the summary.
- For Ferrous Industrial Castings, confirm: Material grade and chemistry, pattern and tooling ownership, casting weight range, inspection methods (radiography, ultrasonic, magnetic particle) and machining capability in-house.
- The listed address may be a registered office rather than the factory. Ask which site would make your part.
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