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HSLA steel

HSLA more resistant to rust and most carbon steel due to less

pearlite and cementite.

Density of HSLA aprox. 7800 kg/m3

HSLA do have limited ductility compared to mild steel.

Highly formable

Weldable

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HSLA steel cars, trucks and bridges

Less steel therefore lighter

Cars fuel economy stronger less damage to roadsurface.

Bridges centre span can be longer and need few

supporting beams.

HSLA steel TV masts Thinner section and more stable for less resistance to

the wind.

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Distribution of Alloying Elements

Distribution depends upon compound and carbide forming tendency of

each element.

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The durability of HSLA steels

More durable and longer life span. Street lighting, oil storage tank , Earth moving equipment

Bridges, sea structures.

Building reinforcement (cement /steel/ steel/steel)

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Microstructure of HSLA

Strength is increased by

Increasing the amount of pearlite

Increasing the fineness of grain structure

Increasing the amount of hard precipitate

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