Please enable JavaScript.

Coggle requires JavaScript to display documents.

Materials (Metals (Ferrous (Cast Iron 2.4 to 4.5 % C.Lower Melting point,…

- - - - Low Alloy<1.4% carbon
        
        Low Carbon <.3% carbon Soft Ductile
        
        Medium Carbon .3 to .6 % carbon, stronger less dutile,railway track
        
        High Carbon 0.6 -1.4 %,Hardest,strong brittle knife
        
        HSLA: Upto 10% Alloys (like Cu, V, Ni and Mo) strongest
      - High ALLoy<2.4% carbon
        
        Stainless Steel : 11% Cromium: Corrosion resistance due to formation of layer Cr2O3
        
        Ferritic
        
        Martensitic: Can be heat treated
        
        Austenitic:Most corrosion resistant
        
        Precipitation hardening steel: Ultra high strength
        
        Duplex:Ferrite=Austenite
        
        Tool Alloy
      - Effect of alloys
        
        Manganese : Increase Hardenability: desulphurize the steel to produce a clean metal.
        
        Phosphorous:increase notch impact toughness:cold shortness” or brittleness when the metal is cold.
        
        Sulfur:brittle at rolling or forging temperatures.Hot short
        
        Silicon:It is an excellent deoxidizer
        
        Copper:Corrosion resistance
        
        Nickel: Impact strength Bullets
        
        Molybdinum: Increase creep resistance
    - - Grey, Graphite flakes hence brittle
      - white Perlite+cementite,hard and brittle
      - Nodular,Stronger,Pearlite matrix
      - malleable = white+heat,Improved ductility
      - compacted,high thermal conductivity,lower oxidation