High Strength Low Alloy (Hsla) Steel

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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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