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MIMO Srl divisione ALLEN
Via dell'Industria, 36 - 35020 - BRUGINE (PD) Italy
Tel: +39 049 5806061
Fax: +39 049 5806611
info@allentechnology.it
MATERIAL SPECIFICATIONS
To meet the strict technical specifications of our products the materials used to manufacture our products are subjected to strict controls and laboratory tests to verify their characteristics and quality.
To maintain the tolerances and initial precision unchanged, all cast parts are normalised to prevent otherwise inevitable deformation over time.
G25 CAST IRON UNI 5007(MEEHANITE GD250, BS1452 GRADE 17, DIN 1691 GG25, ASTM-A48 GRADE 35, ISO-R185 GRADE 25)
- Breaking load Rm 250 N/mm2
- Compressive strength Rm 900 N/mm2
- Elongation A% 1
- BRINELL Hardness HB 190-240
- Breaking load Rm 250 N/mm2
- Compressive strength Rm 900 N/mm2
- Elongation A% 1
- BRINELL Hardness HB 190-240
G25 cast iron is an iron-carbon alloy with a carbon content that varies from 3.2% to 3.5%.
In addition to carbon the alloy is also composed of silicon (1.9 to 2.1 %), manganese (0.65 to 0.8 %) and sulphur (up to 0.1 %).
Carbon is in the form of flakes or scales.
The characteristics of G25 cast iron depend on the dimensions and shape of the graphite flakes.
The main properties of G25 cast iron include good tensile strength and hardness.
It also has very good vibration damping and absorption properties thanks to the graphite flakes, stiffness and low friction coefficient.
In addition to carbon the alloy is also composed of silicon (1.9 to 2.1 %), manganese (0.65 to 0.8 %) and sulphur (up to 0.1 %).
Carbon is in the form of flakes or scales.
The characteristics of G25 cast iron depend on the dimensions and shape of the graphite flakes.
The main properties of G25 cast iron include good tensile strength and hardness.
It also has very good vibration damping and absorption properties thanks to the graphite flakes, stiffness and low friction coefficient.
(MEEHANITE SFP 600, BS2789 37/3, DIN 1693 GGG60, ASTM-A536 80-55-06, ISO-R1083 600/3)
- Breaking load Rm 600 N/mm2
- Compressive strength Rm 1000 N/mm2
- Elongation A% 3
- BRINELL Hardness HB 190-270
- Compressive strength Rm 1000 N/mm2
- Elongation A% 3
- BRINELL Hardness HB 190-270
Nodular cast iron is a particular type of cast iron (an iron-carbon alloy with carbon content from 3.4% to 3.7%) where the carbon (or rather, the graphite) is in the form of spherical nodules.
They are immersed in a metal matrix whose structure depends on chemical composition, cooling speed in the solidification phase and any thermal treatments that may be carried out.
They are immersed in a metal matrix whose structure depends on chemical composition, cooling speed in the solidification phase and any thermal treatments that may be carried out.
The formation of nodules is achieved by addition of “nodulizing" elements such as magnesium, cerium or yttrium into the melt.
The particular spheroid structure offers a number of advantages in terms of mechanical properties of the material. The spherical form in fact, reduces the concentration of tension inside the material and, as it has a shape which has the smallest surface area at a given volume, this is the material which causes less damage to the metal matrix, making it possible to obtain superior properties compared to those of grey cast iron.
The particular spheroid structure offers a number of advantages in terms of mechanical properties of the material. The spherical form in fact, reduces the concentration of tension inside the material and, as it has a shape which has the smallest surface area at a given volume, this is the material which causes less damage to the metal matrix, making it possible to obtain superior properties compared to those of grey cast iron.
Lastly, nodular cast iron is the only ductile cast iron, i.e. it can withstand plastic deformation.
The main mechanical properties of nodular cast iron include mechanical resistance similar to steel, hardness, elongation and toughness and a high resistance to wear and fatigue. Oxidation resistance is significantly higher than that of grey cast iron. It also has good vibration damping and absorption properties and low friction coefficient.
The main mechanical properties of nodular cast iron include mechanical resistance similar to steel, hardness, elongation and toughness and a high resistance to wear and fatigue. Oxidation resistance is significantly higher than that of grey cast iron. It also has good vibration damping and absorption properties and low friction coefficient.
