Ductile Iron Components

Ductile Iron Components

Ductile Iron And Grey Iron Castings Foundry China ISO 9001 Factory Product Description and Process Ductile Iron And Grey Iron Castings Foundry China ISO 9001 Factory Production process includes: green sand casting process pre-coated sand casting process resin sand casting process Weight range:...

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Ductile Iron And Grey Iron Castings Foundry China ISO 9001 Factory

Product Description and Process

Ductile Iron And Grey Iron Castings Foundry China ISO 9001 Factory


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.


What are the Benefits of Ductile Iron?

Ductile iron castings are very strong compared to regular cast iron (gray iron).  The tensile strength of cast iron is 20,000 – 60,000 psi while ductile iron starts at 60,000 psi and can go to 120,000 psi.  The yield strength for ductile iron is generally 40,000 – 90,000 psi but the yield strength of cast iron is so low it is considered not measurable.

Let us put strength in a different way.  We have seen gray iron parts break when they hit the ground after falling ten feet.  With a ductile iron casting, you can hit the part all day long with an eight-pound sledge hammer and it is not likely to crack.

What causes the problem for gray iron is those graphite flakes which encourage fractures along the flakes, while the nodules in ductile iron work at keeping the iron together.

Given the exact same scenario of the same part made from the two different metals, while the brittle gray iron wants to crack, the ductile iron wants to bend.

Ductile iron also has what is called excellent wear resistance because of the graphite in the iron.  When you have something rubbing against ductile iron, the ductile iron wears away much slower than many other metals.  The wear resistance is partly from the graphite structures that can act like a dry lubricant on the iron.

Ductile iron also dissipates (gets rid of) heat very well and can be machined fairly easily, though ductile iron is harder to work with than regular gray cast iron.  Ductile cast iron dampens vibration and sound much better than steel would making ductile iron a good match for use on large machines.


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


EN 1563 1997 (European Standard)

Grade

Tensile Strength

σ≥/Mpa

Yield Strength

σ≥/Mpa

Elongation

δ≥(%)

Symbol

Number

EN GJS 350-22

EN JS1010

350

220

22

EN GJS 350-22-LT*

EN JS1015

350

220

22

EN GJS 400-18

EN JS1020

400

250

18

EN GJS 400-18-LT*

EN JS1025

400

240

18

EN GJS 400-15

EN JS1030

400

250

15

EN GJS 450-10

EN JS1040

450

310

10

EN GJS 500-7

EN JS1050

500

320

7

EN GJS 600-3

EN JS1060

600

370

3

EN GJS 700-2

EN JS1070

700

420

2

EN GJS 800-2

EN JS1080

800

480

2

EN GJS 900-2

EN JS1090

900

600

2

Low temperature V notch impact tested (-20±2℃) 


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