8/12/2019 Pig Iron for Grey Iron Foundries

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Foundry Pig Iron

for Iron Foundries

Grey Iron Castings

High Purity 

Quality Assured

Lower detrimental residual elements

Free from extraneous materials

More useable iron per tonne

Energy SavingsHigh density charge

Lower melting point than steel

Faster melting in induction furnaces

Lower coke usage in cupolas

Lower Ferro Alloy Additions 

Consistent chemical composition

Reduced additions of ferrosilicon,

ferromanganese, coke and re-carburisers.

Reduced Storage Space 

Higher density reduces required

storage space

Reduced handling and charging time

The Use of Foundry Pig Iron in Grey Iron Castings

  Foundry Pig Iron is suitable for iron castings used in general engineering,

machine tools and parts for automotive industry. Due to the high

proportion of iron ore used in the production of Foundry Pig Iron the

formation of pearlite in the finished casting is promoted. This effect is

enhanced when more than 10% of pig iron per charge is used.

  The use of Foundry Pig Iron pig iron promotes graphite formation,

reduces primary chill and improves machinability. This is particularly

important in thin-walled castings.

  The use of costly chill reducing inoculants can be minimised through

increased additions Foundry Pig Iron.

  The content of detrimental trace elements such as Cr, V, Pb and Ti inFoundry Pig Iron is kept to a minimum by the controlled selection of iron

ore and other charge materials.

  The high density of Foundry Pig Iron will improve melting rates or

reduce energy consumption. Steel scrap requires more energy to melt

due to its lower carbon content compared to Foundry Pig Iron. In an

electric induction furnace savings could be as high as 50 KWh/tonne of

molten metal. In a cupola furnace savings of up to 50 kg coke per tonne

of molten may be achieved.

8/12/2019 Pig Iron for Grey Iron Foundries

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Typical Foundry Pig Iron Chemical Specifications

C Si Mn S P

3.5 - 4.0 3.0 - 3.5 0.5 - 1.2 0.04 max 0.12 max

3.5 - 4.1 2.5 - 3.0 0.5 - 1.2 0.04 max 0.12 max

3.5 - 4.2 2.0 - 2.5 0.5 - 1.2 0.04 max 0.12 max

Grey Irons - Equivalent National Standards To EN 1561:1997  

1990 1987 1985 1969 1994 1994 1988 1995

EN

1593:1997 UK France Germany Italy USA USA International Japan

SYMBOL NUMBER BS1452

NFA 32-

101 DIN1691

UNI

5007

ASTM

A48M-94a

ASTM

A48M-94 ISO 185 JISG5501

ENGJL-100 ENJL-1010 100 GG10 G10 20 100 FC100

ENGJL-150 ENJL-1020 150 FGL 150 GG15 G15 25 150/175 150 FC150

ENGJL-200 ENJL-1030 200/220 FGL 200 GG20 G20 30/35 200/225 200 FC200

ENGJL-250 ENJL-1040 250 FGL 250 GG25 G25 40 250/275 250 FC250

ENGJL-300 ENJL-1050 300 FGL 300 GG30 G30 45/50 300/325 300 FC300

ENGJL-350 ENJL-1060 350 FGL 350 GG35 G35 55/60 350 350 FC350

* Specified by hardness value

Grey Cast Iron – Chemical Composition

N/mm2  150 180 200 220 250 260 300 350

TC 3.1 - 3.4 3.1 - 3.4 3.2 - 3.4 3.1 - 3.3 3.0 - 3.2 3.0 - 3.2 2.9 - 3.1 3.1 max

Si 2.5 -2.8 2.3 - 2.6 2.0 - 2.5 1.9 - 2.1 1.6 - 1.9 1.7 - 1.9 1.7 - 1.9 1.4 - 1.6

Mn 0.6-1.0 0.6-1.0 0.6-1.0 0.6-1.0 0.6-1.0 0.6-1.0 0.6-1.0 0.6-1.0

S 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1 0.06-0.1

P 0.12 max 0.12 max 0.12 max 0.12 max 0.12 max 0.12 max 0.12 max 0.12 max

Mo 0.00 0.00 0.00 0.00 0.00 0.00 0.50 0.40

Cu or Ni 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.25

Typical Furnace Charge for Grey Iron Castings

Grade

150 200 250

Foundry Pig Iron 25% 30% 25%

Foundry Returns 40% 35% 35%Cast Iron Scrap 30% 20% 15%

Steel Scrap 5% 15% 25%