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" We want to sell them along with ferrocerium flint rod, so the user can scrape off some shavings from the small bars of pure magnesium and start a fire by lighting these shavings with the hot sparks from ferrocerium flint rod. Magnesium bar will have a 5 mm hole drilled near one corner so it can be carried on a key chain."  Many buyers' requirement encouraged us to build the new production line to manufacture pure magnesium rods......

The required chemical composition conforms to ASTM B92 / B92M - 07 Standard Specification for Unalloyed Magnesium Ingot and Stick :

Magnesium               99.8%min;
Iron(Fe)                   0.05%max;
Silicon(Si)                 0.03%max;
Nickel(Ni)                 0.002%max;
Copper(Cu)              0.02%max;
Aluminium(Al)           0.006%max;
Chlorine(Cl)              0.005%max;
Manganese(Mn)        0.06%max;
Impurity:                  0.20%max;
Magnesium is a fairly strong, silvery-white, light-weight metal (two thirds the density of aluminium). It tarnishes slightly when exposed to air, although unlike the alkaline metals, storage in an oxygen-free environment is unnecessary because magnesium is protected by a thin layer of oxide which is fairly impermeable and hard to remove.

Incendiary use: Magnesium is flammable, burning at a temperature of approximately 2500 K (2200 °C, 4000 °F), and the autoignition temperature of magnesium is approximately 744 K (473 °C, 883 °F) in air. The extremely high temperature at which magnesium burns makes it a handy tool for starting emergency fires during outdoor recreation. Other related uses include flashlight photography, flares, pyrotechnics, fireworks sparklers, and incendiary bombs.

Magnesium is a highly flammable metal, but while it is easy to ignite when powdered or shaved into thin strips, it is difficult to ignite in mass or bulk. Once ignited, it is difficult to extinguish, being able to burn in both nitrogen (forming magnesium nitride), and carbon dioxide (forming magnesium oxide and carbon). On burning in air, magnesium produces a brilliant white light. Thus magnesium powder (flash powder) was used as a source of illumination in the early days of photography. Later, magnesium ribbon was used in electrically ignited flash bulbs. Magnesium powder is used in the manufacture of fireworks and marine flares where a brilliant white light is required. Flame temperatures of magnesium and magnesium alloys can reach 1,371 °C (2,500 °F), although flame height above the burning metal is usually less than 300 mm (12 in).[6]

During use, an amount of magnesium particles is created by scraping the magnesium rod with a rough instrument such as a piece of hacksaw blade. The pile of magnesium particles is then ignited by sparking. Due to the relatively low ignition temperature of the magnesium particles, the particles rapidly ignite, causing a significantly hot fire sufficient to ignite tinder and kindling positioned adjacent thereto.

A magnesium fire igniting device (magnesium firestarter) which functions basically in the manner described above but includes the step of creating the sparking by striking the rod itself to generate sparks therefrom. In order to provide for a better means for sparking, the user creates a pile of the magnesium particles by shaving the magnesium rod with a tool and then with possibly the same tool, creates the sparking by striking the pyrophoric element.

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