Blog-7 steel terminology and classification

26-08-2020

Hello everyone, 

GALVANIC ACTION

It is when two metals are in contact with each other one metal acts as an anode and the other metal acts as the cathode,

ANODIC lead – brass – copper – bronze – monel – titanium – gold - CATHODIC

 The anode is high in the galvanic series while the cathode is low in series. (Visa)

COEFFICIENT OF THERMAL EXPANSION

 The size of an object changes with a change in temperature.

SPECIFIC GRAVITY

 the ratio of the density of a substance to the density of water.

Tensile \ yield

REFLECTIVITY

how much light is reflected from the material in relation to an amount of light incident on the material.

WELDING /SOLDERING

Welding is a fabrication process that joins materials

JOINING

Rivet, pin, bolt, mechanical joints, and fasteners are used as joints 

 Classification of Steel 

Tools steel

Carbon steel

Medium carbon steel 

High/hard carbon steel 

Low / mild steel 

Alloy - addition of steel to improve the quality 

Stainless Steel  5 major types 

Ferretic,

 Martenestic,

 Austenitic,

 Duplex Stainless Steel, 

Precipitaion Hardening.

With regards

B.Deepak


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