New Supreme Castings › Products › Consistent microstructure in graded grey iron castings
Consistent microstructure in graded grey iron 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.
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What to settle before you ask for a quote
General guidance from SourceLoka for grey iron casting; it is not this company’s specification.
- Grade or specification and the minimum tensile strength you need.
- Hardness range if the part will wear, and the heat treatment if any.
- Casting weight and dimensions, and the tolerance class.
- Who owns and maintains the patterns or tooling.
- Testing required: chemical analysis, tensile and hardness tests, and any pressure or leak testing.
- Machining and surface treatment, in-house or outsourced.
What is a grey iron casting, and when should you choose another type?
Molten iron with a controlled carbon and silicon content is poured into a sand mould, and on cooling the carbon forms flakes of graphite. The flakes give excellent machinability, damping and thermal conductivity, and lower cost than steel, but also make the material brittle with lower tensile strength. Grey iron is graded by its minimum tensile strength, and chosen for parts that are mostly loaded in compression.
Grey Iron Casting or ductile iron casting? Grey iron is cheaper, machines easily and damps vibration, but it is brittle and weaker in tension. Ductile iron contains rounded graphite, so it is stronger and can bend before it breaks, which suits parts with shock loads or higher stresses.
Why is grey iron used for machine beds?
Its graphite flakes absorb vibration, it is stable and it is easy to cast into complex shapes and to machine. These qualities make it ideal for bases and frames that carry mostly compressive loads.
What does the grade of grey iron mean?
The grade is based on the minimum tensile strength the material must reach. A higher grade is stronger but harder to machine, so choose the lowest grade that meets your load.
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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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