It is silver white in colour. When bent, it produces a crackling sound as the crystals slide over each other. It is in equilibrium above 13°C, and under this temperature it undergoes a phase transformation over time and turns into powder.
PHYSICAL PROPERTIES
Composition (%)
Specific Gravity (Kg.dm³) Sn:99.8(min)
Melting Point (°C) 7.31
Thermal Conductivity (25°C), (Kcal/Hr/Cm/°C) 232 55
Coefficient of Expansion (0-100°C), (°C)x10-6 23.4
Heating Temperature (Kcal/Kg/°C) 0.054
Resistivity (Ω-cm) 11.5
MECHANICAL SPECIFICATIONS
Elastic Modulus in Tension (Kg/cm²)x10³ 420-455
Tensile Strength (Kg/cm²) 195
Yield Strength (Kg/cm²) 140
Elongation (at 5 cm) (%) 35
hardness 8
Impact Resistance (IZOD) (Kg-m/m) 1.93
Endurance Limit (Kg/cm²) 240
PROCESSING FEATURES
Casting Temperature (Gray),(°C) 275-290
Source Features
Two parts can be easily joined together by simple melting. Block
Large and heavy parts such as blocks and pipes can be added to eutectic
and tin-lead solder or low melting point alloys
Welding can be done using .
Corrosion Properties
Resistant to distilled, salty and fresh water. Strong acids,
It is affected by alkalis and acid salts. The presence of oxygen in the melt increases the rate of exposure.
Forms of Finding: Ingot, rod, wire, foil
Areas of Use Packaging industry, electrical and electronic industry, coating (tinsmith-
Solder and bronze are important alloys in alloy making.
