Bullet_point: ['Case hardening, also called surface hardening or carburizing, is a superior process used here at RWM. Case hardening is a thermochemical method that reinforces metal casters by adding a layer of another, more durable metal alloy. This increases hardness on the outside, while the inner, low-carbon core remains slightly softer, to counteract any brittleness. This makes our casters stand up to heavy loads and long-term use without cracking', 'Induction hardening exposes metal caster parts to electromagnetic energy creating an alternating current in the caster component. This heats the metal but typically hardens only a certain area, leaving other areas somewhat weaker and vulnerable to cracking and breaking', 'Through hardening is the process of using rapid heating and quenching (cooling in water or oil) metal to increase steel hardness. This process can leave the metal caster somewhat brittle, and prone to breaking under stress, unfortunately']

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