Bronze Casting Dealers in Kolkata

• Country of Origin: India
• Type: Tin Bronze Alloys
• Material: Bronze
• Grade: BS, IS
• Color: Yellowish Brown
• Application: Automobiles, Automotive Industry, Fittings, And Many Other Industrial Applications

  Leaded Tin Bronze Alloys are cast as per IS:318-1981 Reaffirmed 2006 specification. This specification covers 6 Grades of Leaded Tin Bronze Alloys for Ingots & Castings. Castings done by us are Bushings, Rods, Flanges & Castings as per drawings & dimensions. The Ingots formed are of uniform quality and reasonably free from slag, dross and other harmful contaminations. The Castings formed are clean & free from harmful defects, blowholes, gas cavities etc. The chemical composition for the Five Grades is tabulated as under: -   Constituent      LTB -1      LTB-2      LTB-3      LTB-4       LTB-5      LTB-6 Tin     6.0-8.0     4.0-6.0     6.0-8.0     6.0-8.0     9.0-11.0     4.0-6.0 Zinc     1.5-3.0     4.0-6.0    0.75 Max   0.75 Max     1.0 Max     1.0 Max Lead     2.5-3.5     4.0-6.0    9.0-11.0   14.0-16.0     8.5-11.0    18.0-23.0 Nickel     2.0 Max     2.0 Max     2.0 Max    2.0 Max      2.0 Max     2.0 Max Aluminium     0.01 Max     0.01 Max     0.01 Max      -------      0.01 Max     ---------- Silicon     0.01 Max     0.02 Max     0.02 Max    0.02 Max      0.02 Max     0.01 Max Antimony     0.3 Max     0.4 Max     0.5 Max    0.5 Max       0.5 Max     0.5 Max Iron     0.30 Max     0.35 Max     0.35 Max    0.35 Max      0.35 Max     0.35 Max Total of all Impurities     0.70 Max,    (Excluding       Nickel)     0.80 Max, (Excluding      Nickel)     0.80 Max (Excluding Nickel +       Zinc)    0.80 Max, (Excluding Nickel        + Zinc)      0.80 Max (Excluding Nickel + Zinc)     0.80 Max (Excluding Nickel + Zinc)   Grade LTB 1 & LTB 2 are meant for general castings and have fair strength and good machining properties. They are used in Valve fittings & pump castings. Grade LTB 3 is suitable for High speed & heavy pressure bearings. Grade LTB 4 is used for General Castings in moderate pressure applications and general-purpose bearing metal. Grade LTB 5 is used for hard or moderately hard shafts with loads and speeds moderate or low with rather less adequate lubrication and alignment. Grade LTB 6 is used for bearing under light loads and high Speeds.