catalogue >> Austenitic Cast lron of Spheroidal Graphite
Steel Type Standard Country Code C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
FCDANi-Mn13-7 G5510 JIS <3.0 2.0-3.0 6.0-7.0 <0.2 12.0-14.0
GGG-Ni-Mn13-7 1694 DIN <3.0 2.0-3.0 6.0-7.0 12.0-14.0
FCDANi-Cr20-2 G5510 JIS <3.0 1.5-3.0 0.5-1.5 1.0-2.5 15.0-22.0
Type D-2 A439 ASTM <3.0 1.5-3.0 0.70-1.25 <0.08 1.75-2.75 18.0-22.0
GGG-Ni-Cr20-2 1694 DIN <3.0 1.5-3.0 0.5-1.5 1.0-2.5 18.0-22.0
FCDANi-CrNb20-2 G5510 JIS <3.0 1.5-2.4 0.5-1.5 1.0-2.5 18.0-22.0
GGG-Ni-CrNb20-2 1694 DIN <3.0 1.5-2.4 0.5-1.5 <0.04 1.0-2.5 18.0-22.0
FCDANi-Cr20-3 G5510 JIS <3.0 1.5-3.0 0.5-1.5 2.5-3.5 18.0-22.0
Type D-2B A439 ASTM <3.0 1.5-3.0 0.7-1.25 <0.08 2.5-3.5 18.0-22.0
GGG-Ni-Cr20-3 1694 DIN <3.0 1.5-3.0 0.5-1.5 2.5-3.5 18.0-22.0
FCDANi-SiCr20-5-5 G5510 JIS <3.0 4.5-5.5 0.5-1.5 1.0-2.5 18.0-22.0
GGG-NiSi-Cr20-5-2 1694 DIN <3.0 4.5-5.5 0.5-1.5 1.0-2.5 18.0-22.0
FCDANi22 G5510 JIS <3.0 1.0-3.0 1.5-2.5 21.0-24.0 <0.5
Type D-2C A439 ASTM <2.9 1.0-3.0 1.8-2.4 <0.08 21.0-24.0 <0.5
GGG-Ni22 1694 DIN <3.0 1.0-3.0 1.5-2.5 21.0-24.0
FCDANi-Mn23-4 G5510 JIS <2.6 1.5-2.5 4.0-4.5 <0.2 22.0-24.0
Type D-2M A439 ASTM 2.2-2.7 1.5-2.5 3.75-4.50 <0.08 <0.2 21.0-24.0
GGG-Ni-Mn23-4 1694 DIN <2.6 1.5-2.5 4.0-4.5 22.0-24.0
FCDANi-Cr30-1 G5510 JIS -2.6 1.5-3.0 0.5-1.5 1.0-1.5 28.0-32.0
Type D-3A A439 ASTM <2.6 1.0-2.8 <1.0 <0.08 1.0-1.5 28.0-32.0
GGG-Ni-Cr30-1 1694 DIN <2.6 1.5-3.0 0.5-1.5 22.0-24.0
FCDANi-Cr30-3 G5510 JIS <2.6 1.5-3.0 0.5-1.0 2.5-3.5 28.0-32.0
Type D-3 A439 ASTM <2.6 1.0-2.8 <1.0 <0.08 28.0-32.0
GGG-Ni-Cr30-3 1694 DIN <2.6 1.5-3.0 0.5-1.0 2.5-3.5 28.0-32.0
FCDANi-SiCr30-5-2 G5510 JIS <2.6 4.0-6.0 0.5-1.5 1.5-2.5 29.0-32.0
GGG-NiSi-Cr30-5-2 1694 DIN <2.6 4.0-6.0 0.5-1.5 1.5-2.5 29.0-32.0
FCDANi-SiCr30-5-5 G5510 JIS <2.6 5.0-6.0 0.5-1.5 4.5-5.5 28.0-32.0 <0.5
Type D-4 A439 ASTM <2.6 5.0-6.0 <1.0 <0.08 4.5-5.5 28.0-32.0
GGG-NiSi-Cr30-5-5 1694 DIN <2.6 4.0-6.0 0.5-1.5 4.5-5.5 28.0-32.0
FCDANi35 G5510 JIS <2.4 1.5-3.5 0.5-1.5 <0.2 34.0-36.0 <0.5
Type D-5 a439 ASTM <2.4 1.0-2.8 <1.0 <0.1 34.0-36.0
GGG-Ni35 1694 DIN <2.4 1.5-3.0 0.5-1.5 34.0-36.0
FCDANi-Cr35-3 G5510 JIS <2.4 1.5-3.0 0.5-1.5 2.0-3.0 34.0-36.0 <0.5
Type D-5B A439 ASTM <2.4 1.0-2.8 <1.0 <0.08 2.0-3.0 34.0-36.0
GGG-Ni-Cr35-3 1694 DIN <2.4 1.5-3.0 0.5-1.5 2.0-3.0 34.0-36.0
FCDANi-SiCr35-5-2 G5510 JIS <2.0 4.0-6.0 0.5-1.5 1.5-2.5 34.0-36.0
Austenitic cast iron with spheroidal graphite, also known as ductile iron or nodular cast iron, is a type of iron alloy that contains spheroidal graphite nodules instead of the flake graphite found in traditional gray cast iron.

The presence of the spheroidal or nodular graphite nodules gives the cast iron enhanced mechanical properties, such as high tensile strength, ductility, and impact resistance. These properties make it suitable for a wide range of applications that require strength and toughness, such as automotive components, pipes, and machinery parts.

The formation of the spheroidal graphite nodules is achieved by adding small amounts of elements, such as magnesium or cerium, to the cast iron melt. These elements act as nucleation sites for the graphite, causing it to form in a spherical shape rather than the flake form found in gray cast iron. The result is a cast iron that has improved strength and ductility compared to its gray cast iron counterpart.

However, the manufacturing process for austenitic cast iron with spheroidal graphite is more complex and requires careful control of the composition and casting parameters. It also typically requires the addition of alloying elements, such as nickel or chromium, to promote the formation of the desired austenitic matrix.

Overall, austenitic cast iron with spheroidal graphite offers a balance of strength, ductility, and cost-effectiveness, making it a popular choice for various engineering applications.