Different Metals Used in Automobile Engine

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An automobile engine is combination of various parts in which each part performs a different function. All these parts work together to convert chemical energy of fuel into mechanical energy. Different part of an engine works in different operating conditions. That’s why every part is made by different material. These materials decide its performance and the maximum operating condition i.e. temperature, pressure etc.

engine material


Different manufacturer uses different materials for every part to make their engine unique. Beside that, an engine consist some parent materials which can’t be replaced by any other material.


This article provide a list of all those engine material used in automobile industries. I hope you would like it.  

Engine Materials:

S. No.PartMaterialManufacturing ProcessRemarks

1.

Cylinder Block


High Grade Cast Iron, Aluminum alloy

Casting

Under high pressure and temperature, Made in Single Unit

2.

Cylinder Head

High Grade Cast Iron,Aluminum alloy

Casting or Metal Forming

Upper Part of Cylinder Block Made in Single Unit

3.

Crankshaft

Steel alloy, Spheroidal Cast iron, Nickel alloy

Forging

Under high fatigue load, that’s why made by forging.

4.

Piston Rings

Fine Grain Cast Iron,

Casting

Required lower coefficient of friction

5.

Connecting Rod

Alloy Steel, Nickel steel, Chrome Steel, Chrome Vanadium Steel,Aluminum

Forging

Connect Crank Shaft to Piston

6.

Piston

Aluminum Alloy, Cast Iron alloy

Casting

Should be light weight and should have lower coefficient of expansion

7.

Camshaft

Alloy Steel

Forging

Under high fatigue load

8.

Valves

Alloy Steel

Metal Forming,

Inlet and Outlet Valve

9.

Engine Bearing

Bronze Steel, White Metal,

Casting

Bronze steel for low thrust and white metal for heavy thrust

10.

Cylinder Liner

Alloy Cast iron with Chromium, Vanadium, Molybdenum

Casting

It reduce wear and tear of cylinder wall

11.

Gudgeon Pins

Alloy Steel

Forging

Connect connecting rod to piston

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