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SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process

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SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process

China SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process supplier
SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process supplier SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process supplier

Large Image :  SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process

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
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Detailed Product Description
Material: HT250 Process: Precoated Sand Casting Process
Machining: CNC Machining Surface: Anti-Rust Oil
Used For: Pump Industry Packing: Crate

SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process

 

Product Description and Process
 
1. Pump & Valve Fittings Impeller Grey Cast Iron Castings Precoated Sand Castings Process
 
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

 
 
 

 

 

SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process

 
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)

 
 
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.

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

 
SAE J431 ASTM A48 Impeller Grey Cast Iron Precoated Sand Casting Process

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

Contact Person: James Wang

Tel: +8613213152686

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