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Ductile Cast Iron Parts
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product: view count: 293Ductile Cast Iron Parts 
unit price: Negotiable
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period for delivery: Consignment Deadline days
Expiry date: Long Effective
last update: 2018-12-29 13:58

Autocar Parts Ductile Cast Iron 65-45-12 Grade Material Custom Casting Manufacturer

Product Description and Process

Autocar Parts Ductile Cast Iron 65-45-12 Grade Material Custom Casting Manufacturer

Production process:

green sand casting process

pre-coated sand casting process

resin sand casting process

Weight range: from 50 gram to 2,000 kilograms for ductile iron casting product

Sand mould production:

Automatic moulding machine

Z145 moulding machine

Z146 moulding machine

Z148 moulding machine

Handwork moulding, though most parts can achieve the moulding by machine, for some complex structure parts, the hand moulding is still needed.

Machining process:

CNC machine, machining center, lathe, mill machine, drill machine, etc.

Surface treatment process:

paint coating, electrophoretic paint coating, electrogalvanizing coating, black oxide coating, phosphate treatment,  powder coating, etc.

Product Material and Uses

Normally production with gray iron HT200, HT250, ductile iron 65-45-12, 60-40-18, 80-55-06, 80-60-03, 100-70-03, etc.

The ductile iron casting products are widely used for Auto-cars, trains, trucks, vehicle components, mining machinery components, agricultural machinery parts, textile machinery parts, construction machinery parts, etc

Ductile Iron Castings & Ductile Cast Iron

If cast iron is subject to a compressive load, these stress points are not particularly detrimental and flake graphite cast iron is excellent under compression. However, tensile loading above the natural tensile strength of the cast iron can cause rapid tensile failure as cracks propagate rapidly out from these stress points. The result of this is that cast iron has virtually no elongation, is a brittle material and is therefore limited in its use in tensile and shock loading applications. For years foundrymen and metallurgists tried to develop a new type of cast iron that would withstand bending and shock loading and would have the characteristics more of malleable cast iron but could be produced at the lower cost of grey cast iron. This resulted in the development of Ductile Cast Iron.


Ductile cast iron is grey cast iron with spherical graphite. It differs from grey cast iron with lamellar graphite in its chemical composition, which, in addition to the basic elements, also contains small quantities of magnesium (from 0.04 to 0.06 %), cerium and rare earths that influence the formation of graphite spheres.


The properties of ductile cast iron do not only depend on the size, number and arrangement of graphite balls in the cast iron, but also on the basic matrix consisting of ferrite and perlite. At the same hardness levels, nodular cast iron has a much higher tensile strength than grey cast iron; toughness and elongation are therefore great advantages of nodular cast iron.

As in the case of grey cast iron, tensile strength and strain define the quality of cast iron. In accordance with the EN-1563 standard, we manufacture ductile cast iron of quality levels 400-7, 400-15, 450-18, 500-14, 600-3, 600-10, and 700-2, as well as cast irons of other quality levels in agreement with customers.

What is in Ductile Iron? (Composition)

If you were to do a chemical analysis of ductile iron, this is what you would normally find:

Iron ~94%

Carbon 3.2 – 3.60%

Silicon 2.2 – 2.8%

Manganese 0.1 – 0.2%

Magnesium 0.03 – 0.04%

Phosphorus 0.005 – 0.04%

Sulfur 0.005 – 0.02%

Copper <= 0.40%

To improve the strength of ductile iron, additional tin or copper can be added. To improve corrosion resistance, copper, nickel, or chromium can replace anywhere from 15-30% of the iron.

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