Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
News
Home ProductsGrey Cast Iron

ASTM A48 Class 30 Gray Iron Sand Castings Process Shell Mould Castings

My dear friend, the goods received are good and hope we can work together for more items.

—— Angelo

Yu-Long company is indeed professional in casting field, and help to improve the design and save the cost for us. Thanks very much.

—— John

The delivery is on time, and cooperation is happy.

—— Christopher

I'm Online Chat Now

ASTM A48 Class 30 Gray Iron Sand Castings Process Shell Mould Castings

ASTM A48 Class 30 Gray Iron Sand Castings Process Shell Mould Castings
ASTM A48 Class 30 Gray Iron Sand Castings Process Shell Mould Castings ASTM A48 Class 30 Gray Iron Sand Castings Process Shell Mould Castings

Large Image :  ASTM A48 Class 30 Gray Iron Sand Castings Process Shell Mould Castings

Product Details:

Place of Origin: China
Brand Name: non-standard
Certification: ISO9001;TS16949
Model Number: custom-built

Payment & Shipping Terms:

Minimum Order Quantity: 1 Ton
Price: quote according to different drawing technique requirements
Packaging Details: Plywood crate + VCI Anti-Rust Bag
Delivery Time: within 60 days
Payment Terms: T/T, L/C
Supply Ability: 300 Tons every month
Detailed Product Description
Material: ASTM A48 Class30 Process: Shell Mold Casting Process
Machining: CNC Machining Surface: Anti-Rust Oil
Used For: Industry Packing: Crate
High Light:

gray cast iron

,

grey iron foundry

ASTM A48 Class 30 Gray Iron Sand Castings Process Shell Mould Castings

 

 

Product Description and Process

 

1. Grey Cast Iron ASTM A48 Class30 Sand Castings Process Shell Mould Castings

 

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

 

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

 

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

 

Product Material and Uses

 

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

2. 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, valves and pump parts, etc.

 

 

 

Properties of ASTM A48 classes of gray iron

 

Class Tensile
strength (ksi)
Compressive
strength (ksi)
Tensile modulus,
E (Mpsi)
20 22 83 10
30 31 109 14
40 57 140 18
60 62.5 187.5 21

 

 

Properties of SAE J431 grades of gray iron

 

Grade Brinell hardness t/h† Description
G1800 120–187 135 Ferritic-pearlitic
G2500 170–229 135 Pearlitic-ferritic
G3000 187–241 150 Pearlitic
G3500 207–255 165 Pearlitic
G4000 217–269 175 Pearlitic
†t/h = tensile strength/hardness

 

 

 

 

 

 

What is the Composition of Gray Cast Iron?

 

Just like all cast iron parts, the primary component of Grey Iron is going to be the iron (no surprise there, right?). Just like most other cast irons, it also has 2.5–4.0% carbon and 1–3% silicon. If you look at Chart 2 you will notice that the composition of the iron is very close to other common cast parts, but with a little more phosphorus.

 

Iron Family Gray Ductile CGI Malleable White
Carbon 2.5-4.2 3.0-4.0 2.5-4.0 2.2-2.8 1.8-3.6
Silicon 1.0-3.0 1.8-3.0 1.5-3.0 1.2-1.9 0.5-2.0
Manganese 0.15-1.0 0.1-1.0 0.10-1.0 0.15-1.2 0.15-0.8
Sulfur 0.02-0.25 0.01-0.03 0.01-0.03 0.02-0.2 0.02-0.2
Phosphorus 0.02-1.0 0.01-0.1 0.01-0.1 0.02-0.2 0.02-0.2

 

Grey Cast Iron Property and Chemical Composition

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

 

Single Casting Specimen Tensile Strength Property

 

Gray Iron Grade

Single Specimen

Tensile Strength

σb≥/Mpa

Gray iron Castings

Wall Thickness

/mm

Tensile 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

>30~50

340

290

260

 

 

 

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)

Contact Details
Zhengzhou Yu-Long Machinery Equipment Co., Ltd.

Contact Person: Mr. James Wang

Tel: +86 13213152686

Send your inquiry directly to us (0 / 3000)