Properties of Metals - propertis Logam

Properties of Metals

1.      Physical properties

• Density
• Electrical conductivity
• Thermal conductivity

2.      Mechanical properties

• Brittleness
• Ductility
• Fatigue
• Hardness
• Impact resistance
• Malleable
• Strength
• Toughness

3.      Mechanical strengths

• Tensile strength
• Compressive strength
• Shear strength
• Torsional strength

 

Steel alloys

Steel Identification Systems

 

SAE (Society of Automotive Engineers) and AISI (American Iron and Steel Institute)

 •Uses a numbered system based on the type of alloy.

•Uses a letter system that identifies how the metal was produced. (AISI only)

•Uses a four-digit number code system.

 Color coding

•Colors are painted on the ends of steel bars or steel sheets to indicate the type of steel.

•Colors differ according to the manufacturer.

 

UNS (Unified Numbering System)

•Uses a five-digit number with a letter prefix.

•The number indicates a general ferrous metal or an alloy group.

 

Properties of Common Metals

Iron

Steel

Non-ferrous metals

Metal Tests and Their Characteristics

 Appearance

Chisel

File

Magnet

 Spark