Grey Cast Iron Material Gg25 Ht200 Fg150 Iron Casting Company Precoated Sand Castings

Grey Cast Iron Material Gg25 Ht200 Fg150 Iron Casting Company Precoated Sand Castings

Product Description and Process grey cast iron material gg25 ht200 fg150 iron casting company pre-coated sand castings Production process: green sand molding, pre-coated sand molding and resin sand molding which can produce iron castings from 50 gram to 2000 kilograms Machining process: CNC...

Product Details

Product Description and Process

grey cast iron material gg25 ht200 fg150 iron casting company pre-coated sand castings

 

Production process: green sand molding, pre-coated sand molding and resin sand molding which can produce iron castings from 50 gram to 2000 kilograms

Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.

Surface treatment process: paint coating, electrophoretic coating, electrogalvanizing coating, black oxide coating, powder coating, etc.

 

Product Material and Uses

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

The grey/gray 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.

 

Grey Cast Iron Property and Chemical Composition

Grey Cast Iron (Gray iron) is so called because of the colour of the fracture face. It contains 1.5-4.3% carbon and 0.3-5% silicon plus manganese, sulphur and phosphorus. It is brittle with low tensile strength, but is easy to cast. The all data in this documents is referred to Chinese standard of GB/T 9439-1988.

 

Single Casting Specimen Tensile Strength Property

Gray Iron Grade

Single Specimen

Tensile Strength σb≥/Mpa

Gray iron Castings
Wall Thickness /mmTensile Strength σb≥/Mpa

 

HT100

 

 

100

 

>2.5~10

>10~20

>20~30

>30~40

130

100

90

80

HT150

150

>2.5~10

>10~20

>20~30

>30~40

175

145

130

120

HT200

200

>2.5~10

>10~20

>20~30

>30~40

220

195

170

160

HT250

250

>4.0~10

>10~20

>20~30

>30~50

270

240

220

200

HT300

300

>10~20

>20~30

>30~50

290

250

230

HT350

350

>10~20

>20~30

340

290

260


Gray Iron Casting, no any standard mentioned the chemistry composition, so we only suggest the following chemistry based on actual production.

Grade

Wall Thickness /mm

C

Si

Mn

P ≤

S ≤

HT100


3.4~3.9

2.1~2.6

0.5~0.8

0.3

0.15

HT150

<30

30-50

>50

3.3~3.5 3.2~3.5 3.2~3.5

2.0~2.4 1.9~2.3 1.8~2.2

0.5~0.8 0.5~0.8 0.6~0.9

0.2

0.2

0.2

0.12

0.12

0.12

HT200

<30

30-50

>50

3.2~3.5 3.1~3.4 3.0~3.3

1.6~2.0 1.5~1.8 1.4~1.6

1.7~0.9 0.8~1.0 0.8~1.0

0.15

0.15

0.15

0.12

0.12

0.12

HT250

<30

30-50

>50

3.0~3.3 2.9~3.2 2.8~3.1

1.4~1.7 1.3~1.6 1.2~1.5

0.8~1.0 0.9~1.1 1.0~1.2

0.15

0.15

0.15

0.12

0.12

0.12

HT300

<30

30-50

>50

2.9~3.2 2.9~3.2 2.8~3.1

1.4~1.7 1.2~1.5 1.1~1.4

0.8~1.0 0.9~1.1 1.0~1.2

0.15

0.15

0.15

0.10

0.10

0.10


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