Ductile Iron Castings

Ductile Iron Castings

ASTM A356 Ductile Iron Casting Manufacturer Nodular Graphite Cast Iron Parts Product Description and Process ASTM A356 Ductile Iron Casting Process Cast Iron Foundry Auto Parts Supplier Production process: green sand casting process pre-coated sand casting process resin sand casting process...

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ASTM A356 Ductile Iron Casting Manufacturer Nodular Graphite Cast Iron Parts

Product Description and Process

ASTM A356 Ductile Iron Casting Process Cast Iron Foundry Auto Parts Supplier


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


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 have many advantages

Ductile iron – also referred to as spheroidal or nodular iron – is actually a group of irons that exhibit high strength, flexibility, durability and elasticity due to their unique microstructure. Cast ductile iron normally contains over 3 percent carbon; it can be bent, twisted or deformed without fracturing. Its mechanical properties are similar to steel, and far exceed those of standard cast irons.

Ductile iron castings are solid metal objects that result from molten ductile iron being poured into voids in a mold. The ductile iron subsequently cools and solidifies in the shape of the void it occupies.


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.


Common Ductile Iron Grades

While there are many different ductile iron specifications, foundries routinely offer 3 common grades;

Physical and Mechanical Properties

ASTM A536,

Grade 60-40-18

ASTM A536,

Grade 65-45-12

ASTM A536,

Grade 80-55-06

Tensile Strength, min, psi

60,000

65,000

80,000

Tensile Strength, min, MPa

414

448

552

Yield Strength, min, psi

40,000

45,000

55,000

Yield Strength, min, MPa

276

310

379

Elongation in 2 in. or 50 mm, min %

18

12

6

Density lb/in3

0.256

0.256

0.256

Density g/cm3

7.1

7.1

7.1

Melting Temperature (Degrees F)

2,100 – 2,190

2,100 – 2,190

2,100 – 2,190

Melting Temperature (Degrees C)

1,150 - 1,200

1,150 - 1,200

1,150 - 1,200

Compressive Strength Ksi

429

429

429

Compressive Strength MPa

2960

2960

2960

UNS

F32800

F33100

F33800


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