HT250 Cast Iron Parts

HT250 Cast Iron Parts

Brake Rotors Cast Iron Grade 25 Castings Raw Castings & Machining Parts Supply Product Description and Process Brake Rotors Cast Iron Grade 25 Castings Raw Castings & Machining Parts Supply Production process: Green sand casting process pre-coated sand casting process resin sand casting...

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Brake Rotors Cast Iron Grade 25 Castings Raw Castings & Machining Parts Supply

Product Description and Process

Brake Rotors Cast Iron Grade 25 Castings Raw Castings & Machining Parts Supply


Production process:

Green sand casting process

pre-coated sand casting process

resin sand casting process

Weight range: from 50 gram to 5,000 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 grey 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 Iron Castings’other mechanical property

Grade

Compressive Strength

σbc/MPa

Shearing Strength

τb/Mpa

Impact Testing

αKV/(J/cm2)

Safe Range of stress

σ-1/MPa

Modulus of Elasticity

Ε/GPa

HT150

500~700

150~250

60~90

70~90

HT200

600~800

200~300

2~5

80~90

80~110

HT250

800~1000

250~350

4~8

100~140

100~130

HT300

1000~1200

300~450

7~10

120~160

120~140

HT350

1100~1300

350~500

9~11

140~180

130~160


Grey Iron Castings Hardness

Gray Iron Grade

Hardness Grade

Hardness Range

HB

Metallography

HT100

H145

≤170

Ferrite

HT150

H175

150~200

Ferrite + Pearlite

HT200

H195

170~220

Pearlite

HT250

H215

190~240

Pearlite

HT300

H235

210~260

Pearlite(Inoculated Cast Iron)

HT350

H255

230~280

Pearlite(Inoculated Cast Iron)


Gray Iron Casting heat treatment

Casting Unit Weight

kg

Starting Temperature

/0C

Heating Speed

/(0C/h)

Preservation Temperature/0C

Heat

Preservation

Time/h

Cooling Speed

/(0C/h)

Final Temperature

/0C

Cast Iron

Low

Alloy

Cast Iron

Simple Castings

<200

≤200

≤100

500~550

550~570

4~6

30

200

200~2500

≤200

≤80

500~550

550~570

6~8

30

200

>2500

≤200

≤60

500~550

550~570

8

30

200

Precision Castings

<200

≤200

≤100

500~550

550~570

4~6

20

200

200~2500

≤200

≤80

500~550

550~570

6~8

20

200


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