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  FERROUS   Ferro Alloys   Ferro Sulphur  
 
Ferro Sulphur
  DESCRIPTION

SULPHUR (S) when added in small amounts Sulphur improves machinability.  However, like Phosphorous it has a detrimental effect on corrosion resistance and weldability.

 

Most commercial gray irons contain between 0.06 and 0.12 percent sulphur.  The effect of sulphur on the form of carbon is the reverse of silicon.  The higher the sulphur content, the greater will be the amount of combined carbon, thus tending to produce a hard, brittle white iron.  Aside from producing combined carbon, sulphur tends to react with iron to form iron sulfide (FeS).  This low-melting compound, present as thing interdendritic layers, increase the possibility of cracking at elevated temperatures (read-short).  High sulphur tends to reduce fluidity and often is responsible for the presence of blowholes (trapped air) in casting.

 

Fortunately, manganese has a greater affinity for sulphur thin iron, forming manganese sulfide (MnS).  The manganese sulfide particles appear as small, widely dispersed inclusions which do not impair the properties of the casting.  It is common commercial practice to use a manganese content of two to three times of sulphur content.

 

ORIGIN: CHINA and JAPAN

 

ADVANTAGE:
- High Recovery
- Consistent Quality

 

   
  STANDARD SPECIFICATION
S Fe SiO2 Size
48% min 42% min 5% max 10-50 mm
 
 
 
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