How Flint and Steel Works?

The sharp edge of the flint is used to violently strike the fire steel at an acute angle in order to cleave or shave off small particles of metal. The pyrophoricity of the steel results in the shavings oxidising in the air. The molten, oxidizing sparks ignite the fine tinder.

Is flint stronger than steel?

Flint & Steel. "Flint" should be any hard, quartz based stone (flint, chert, quartzite, jasper, etc.) found on the reservation that is harder than steel. ... In the field, sandstone or some other abrasive rock may be used to grind the edge of a file.

How does a flint spark?

When struck against steel, a flint edge produces sparks. The hard flint edge shaves off a particle of the steel that exposes iron, which reacts with oxygen from the atmosphere and can ignite the proper tinder.