Cast Iron Parts for Autocars

Cast Iron Parts for Autocars

Cast Iron Products Manufacturer OEM Castings Supplier China Product Description and Process Cast Iron Products Manufacturer OEM Castings Supplier China Production process includes: green sand casting process pre-coated sand casting process resin sand casting process Weight range: from 50 gram to...

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Cast Iron Products Manufacturer OEM Castings Supplier China

Product Description and Process

Cast Iron Products Manufacturer OEM Castings Supplier China


Production process includes:

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, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron and SG iron, is a type of graphite-rich cast iron discovered in 1943 by Keith Millis. While most varieties of cast iron are weak in tension and brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions.


Metallurgy

Ductile iron is not a single material but part of a group of materials which can be produced with a wide range of properties through control of their microstructure. The common defining characteristic of this group of materials is the shape of the graphite. In ductile irons, graphite is in the form of nodules rather than flakes as in grey iron. Whereas sharp graphite flakes create stress concentration points within the metal matrix, rounded nodules inhibit the creation of cracks, thus providing the enhanced ductility that gives the alloy its name. Nodule formation is achieved by adding nodulizing elements, most commonly magnesium (magnesium boils at 1100 °C and iron melts at 1500 °C) and, less often now, cerium (usually in the form of mischmetal).Tellurium has also been used. Yttrium, often a component of mischmetal, has also been studied as a possible nodulizer.

"Austempered Ductile Iron" (ADI) was discovered in the 1950s but was commercialized and achieved success only some years later. In ADI, the metallurgical structure is manipulated through a sophisticated heat treating process. The "aus" portion of the name refers to austenite.


Ductile Iron Grade Chart

ASTM A536 1993 (USA)

Grade

Tensile Strength

σ≥/Mpa

Yield Strength

σ≥/Mpa

Elongation

δ≥(%)

ANSI/ASTM

UNS

60-40-18

F32800

414

276

18

65-45-12

F33100

448

310

12

80-55-06

F33800

552

379

6.0

100-70-03

F34800

689

483

3.0

120-90-02

F36200

827

621

2.0

Special Purpose

///

60-42-10

/

415

290

10

70-50-05

/

485

345

5.0

80-60-03

/

555

415

3.0


DIN 1693 1997 (Germany)

Grade

Material No

W-Nr. 

Tensile strength

σb≥/Mpa 

Yield strength

σ0.2≥/Mpa 

Elongation

δ≥(%)

GGG-40 

0.7040 

400 

250 

15 

GGG-50 

0.7050 

500

320 

GGG-60

0.7060 

600

380 

3

GGG-70 

0.7070 

700

400 

2

GGG-80

0.7080

800

500

2


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