The followings are the chemical composition, material properties and main application of gray cast iron DIN1691 GG25.

Characteristics of DIN 1691 GG25 Gray Cast Iron:
DIN 1691 GG25 Gray Cast Iron is the most commonly used cast iron alloy. This material offers a good combination of strength and wear resistance, while still possessing good machinability and produces excellent surface finishes. Noise and vibration damping are excellent in this grade.

Chemical Composition of DIN 1691 GG25 Gray Cast Iron:

As for normal grey iron, the chemical composition is not important comparatively. The iron foundries could adjust the compositions according to their experience as long as they could meet the physical and mechanical requirements.

Physical Properties of DIN 1691 GG25 Gray Cast Iron:
Density ρ 7.2 g/cm³ at 20 °C
Thermal Specific heat capacity cp 460 J/(kg.K) at 200 °C
Electrical resistivity ρel 7.3E-7 Ω.m at 20 °C

Mechanical Properties of DIN 1691 GG25 Gray Cast Iron:

Main Applications of DIN 1691 GG25 Gray Cast Iron:

• Sliding parts
• Pulleys and hydraulic distribution blocks (good machinability)

Worldwide equivalents of DIN 1691 GG25 Gray Cast Iron:

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