6294 3940

Cast Iron
SKU: FC25
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Common Name:

ASTM A.48: Class 35 – 40
BS 1452: Grade 17
AS 1830: T260
DIN 1691: GG35
JIS: FC25

 

Typical Chemical Analysis:

Aluminum (AI): <0.01%
Copper (Cu) : <0.3%
Nickel (Ni): 0.08%
Phosphorus (P): <0.1%
Silicon (Si):2.2 – 2.9%
Sulfur (S): <0.08%
Manganese (Mn): 0.2 %– 0.7%
Carbon (C): 3% - 3.7%
Chrome (Cr) : <0.08%
Molybdenum (Mo): <0.01%
Titanium (Ti): <0.05%

 

Typical Physical Properties:

Hardness (HB): 170Min.
Tensile Strength: 180 - 220 MPa Min.
Machinability: 30

 

Fabrication Practices:

Joining /solderability: Joining by nickel-iron electrode (containing 55% nickel and 45% Fe) is excellent
Resistance wielding: Not recommended
Brazing: Brazing with silver alloy of low silver content
Oxyacetylene wielding: Good
ARC wielding: Good

 

Background:

Gray Iron is the least expensive of all cast metals. Due to its low cost, it should always be considered first when a cast metal is selected. Another metal should be chosen only when the mechanical or physical properties of gray iron are inadequate. The machinability of most gray iron is superior to that of virtually all steel because of the graphite present. Gray iron may also be heat treated in softening for better machinability or hardening for wear resistance. Repair by welding is also possible by shield metal arc or oxyacetylene gas.
Usage:
Pistons, support bearings, spindle sleeves spacers, shock absorber, clutch drums, V-pulleys, sprockets, guide rails, distributor blocks.

 

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