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S G IRON CASTINGS

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Information

  • S G Iron is also known as Spheroidal Graphite Iron, Ductile Cast Iron, Nodular Cast Iron, Spherulitic Graphite Cast Iron. S G Iron is a type of cast iron that has been treated while molten with an element such as magnesium or cerium to induce the formation of free graphite as nodules or spherulites. This imparts a measurable degree of ductility (easily manipulated) to the cast metal. The ductile iron family offers the design engineer a unique combination of strength, wear resistance, fatigue resistance, and toughness, as well as excellent ductility characteristics.
  • S G Iron/Ductile iron is not a single material but is part of a group of materials which can be produced to have a wide range of properties through control of the microstructure. The common defining characteristic of this group of materials is the shape of the graphite. In ductile irons, the graphite is in the form of nodules rather than flakes as it is in grey iron. The sharp shape of the flakes of graphite create stress concentration points within the metal matrix and the rounded shape of the nodules less so, thus inhibiting the creation of cracks and providing the enhanced ductility that gives the alloy its name.
  • This nodular graphite structure inhibits the creation of linear cracks hence the ability to withstand distortion.

Composition

A typical chemical analysis of this material:

  • Carbon 3.2 to 3.6%
  • Silicon 2.2 to 2.8%
  • Manganese 0.1 to 0.5%
  • Magnesium 0.03 to 0.05%
  • Phosphorus 0.005 to 0.04%
  • Sulfur 0.005 to 0.02%
  • Copper 0.40%
  • Iron balance

Other elements such as copper or tin may be added to increase tensile and yield strength while simultaneously reducing ductility. Improved corrosion resistance can be achieved by replacing 15% to 30% of the iron in the alloy with varying amounts of nickel, copper, or chromium.

Specifications

  • IS - 1865 - 1998 (Third Reprint)
  • Grades - SG - 350/22, SG - 400/15, SG - 450/10, SG - 500/7, SG - 600/3, SG - 700/2, SG - 800/2 & SG - 900/2.
  • All Grades better Corrosion, wear and heat resisting.

Manufacturing Capacity

  • From 5 kgs. to 100kgs. Single PC.

Products

  • Crank Gear, Separator Body Liner
  • Winch Drums
  • Elevator Blocks
  • Impellers
  • Valves
  • Hallow Cylinder
  • And other various types of S G Iron Castings (Spheroidal Graphite Iron Castings / Nodular Iron Castings)

S G Iron / Ductile Iron Chemical Components

Ductile iron is also called as nodular iron or SG iron. Its chemical components did not have strict range for many material standards, however, its range should be useful for buyers to evaluate the quality of cast iron.

Therefore, we filled some normal standards to show the reasonable range to ductile iron. Please remember the chemical components are only a reference, not a strict standard to the material. The foundry could adjust its chemical components according to their experience in order to meet the physical properties. So, physical properties should be the only standard to materials.


Applications

Ductile iron is specifically useful in many automotive components, where strength needs surpass that of aluminum but do not necessarily require steel. Other major industrial applications include off-highway diesel trucks, Class 8 trucks, agricultural tractors, and oil well pumps, etc.

Technical Information (Click on below title to view technical specifications.)

USA Germany ISO C % Si % Mn % P % S % Mg % Cu % Sn %
60-40-18 GGG40 400-18 3.50-3.78 2.80-2.85 0.2-0.5 0.03-0.06 0.02-0.035 0.020-0.060 - -
65-45-12 GGG40 450-10 3.30-3.80 2.40-2.90 0.2-0.5 0.03-0.06 0.02-0.040 0.020-0.060 - -
70-50-05 GGG50 500-7 3.20-3.60 2.30-2.90 0.4-0.6 0.03-0.06 0.02-0.040 0.030-0.055 <0.4 -
80-60-03 GGG60 600-3 3.00-3.50 2.40-2.80 0.3-0.5 0.03-0.06 0.02-0.040 0.035-0.050 0.30-0.40 -
100-70-03 GGG70 700-2 3.65-3.90 1.70-1.90 0.3-0.5 <0.06 <0.03 0.035-0.050 0.30-0.40 0.03-0.06
120-90-02 GGG80 800-2 - - - - - - - -

Country Standard Equivalent Grades of Ductile Iron (SG Iron, Nodular Graphite Iron)
ISO ISO 1083 400-15
400-18
450-10 500-7 600-3 700-2 800-2 900-2
China GB 1348 QT400-18 QT450-10 QT500-7 QT600-3 QT700-2 QT800-2 QT900-2
USA ASTM A536 60-40-18 60-42-10
65-45-12
70-50-05 80-55-06
80-60-03
100-70-03 120-90-02 -
Germany
Austria
DIN 1693 GGG40 - GGG50 GGG60 GGG70 GGG80 -
European EN 1563 EN-GJS-400-15
EN-GJS-400-18
EN-GJS-450-10 EN-GJS-500-7 EN-GJS-600-3 EN-GJS-700-2 EN-GJS-800-2 EN-GJS-900-2
Japan JIS G5502 FCD400 FCD450 FCD500 FCD600 FCD700 FCD800 -
Italy UNI 4544 GS370-17 GS400-12 GS500-7 GS600-2 GS700-2 GS800-2 -
France NF A32-201 FGS370-17 FGS400-12 FGS500-7 FGS600-2 FGS700-2 FGS800-2 -
UK BS 2789 400/17 420/12 500/7 600/7 700/2 800/2 900/2
India IS 1865 SG370/17 SG400/12 SG500/7 SG600/3 SG700/2 SG800/2 -
Spain UNF FGE38-17 FGE42-12 FGE50-7 FGE60-2 FGE70-2 FGE80-2 -
Belgium NBN 830-02 FNG38-17 FNG42-12 FNG50-7 FNG60-2 FNG70-2 FNG80-2 -
Australia AS 1831 300-17
400-12
- 500-7 600-3 700-2 800-2 -
Sweden SS 1407 0717-02 - 0727-02 0732-03 0737-01 0864-03 -
Norway NS11 301 SJK-400.3
SJK-400
- SJK-500 SJK-600 SJK-700 SJK-800 -

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

* Low temperature V notch impact tested (-20±2℃)
GB/T 1348 1998 (China)
Grade Tensile strength
σb≥/MPa
Yield strength
σ0.2≥/MPa
Elongation
δ5≥(%)
Hardness
HBS
QT400-18 QT400-18-LT * 400 250 18 130~180
QT400-15 400 250 15 130~180
QT450-10 450 310 10 160~210
QT500-7 500 320 7 170~230
QT600-3 600 370 3 190~270
QT700-2 700 420 2 225~305
QT800-2 800 480 2 245~335
QT900-2 900 600 2 280~360

Grade Material No
W-Nr.
Tensile strength
σb≥/Mpa
Yield strength
σ0.2≥/Mpa
Elongation
δ≥(%)
GGG-40 0.7040 400 250 15
GGG-50 0.7050 500 320 7
GGG-60 0.7060 600 380 3
GGG-70 0.7070 700 400 2
GGG-80 0.7080 800 500 2

* Low temperature V notch impact tested (-20±2℃)
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℃)
Grade Tensile strength
σb≥/Mpa
Yield strength
σ0.2≥/Mpa
Elongation
δ≥(%)
Hardness
HBS
900-2 900 600 2 280~360
800-2 800 480 2 245-335
700-2 700 420 2 225~305
600-3 600 370 3 190~270
500-7 500 320 7 170~230
450-10 450 320 10 160~210
160~210 400 250 15 130~180
400-18
400-18
AL*
400 250 18 130~180
350-22 350 220 22 ≤150

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HMC

Plot No. 412 & 435, Road No. 12, Gopal Charan Industrial Hub, Nr. Ahmedabad – Indore Highway , Bakrol – Bujrang, Tal. Daskori, Dist. Ahmedabad – 382430 (GUJRAT) India.

Hariom Metal Cast

L–146, G.I.D.C. Estate, Nr. Water tank, Odhav, Ahmedabad–382415