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What are bottle jacks made of?

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Steel

Car and trolley jacks, axle stands, bottle jack, trolley jack, racing jack, vehicles, maintenance, mechanics, DIYers, wonkee donkee, hydraulic. Steel is an alloy produced by adding carbon to iron. These alloy elements give steel its strength.

Heat treated steel

Car and trolley jacks, axle stands, bottle jack, trolley jack, racing jack, vehicles, maintenance, mechanics, DIYers, wonkee donkee, hydraulic. Heat treatment is carried out to change the physical properties. This process involves heating or chilling, usually to extreme temperatures and achieves results such as hardening or softening.

The jacks are heat treated to harden the steel, which gives strength to the bottle jacks, allowing them to withstand heavy loads and constant use.