Types of Smokeless Powder (Smokeless Powder)

Smokeless Powder

Modern Nitrocellulose powders have come a long way since then. Today there are single-base and multi-base smokeless powders.

Single base powders are based on nitrocellulose alone and double base powders contain nitroglycerine in addition to nitrocellulose, adding to its energy. Both types have their advantages and are widely used in small arms ammunition, and both types are available to reloaders. At the time of this writing, Winchester/Olin and Alliant exclusively produce multi-base powders, all VihtaVuori and most IMR powders are single-base (700X and 800X are the multi-base IMR powders that I know of), and Accurate and Hodgdon offer several powders of each type.

SINGLE-BASE POWDER

Single-base powder consists of colloided NC with other materials added to obtain suitable form, burning character, and stability. Several single-base propellants are in use today.

MULTIBASE POWDER

Multi-base powder uses NG and/or NQ in addition to NC as explosive ingredients. Such propellants are commonly called double-base (NC and NG) and triple-base (NC, NG, and NQ). One double-base and one triple-base propellant are in use today.

Smokeless Powder

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Information About Smokeless Powder (Smokeless Powder)

Smokeless powder

Smokeless powder is the name given to a number of propellants used in firearms and artillery which produce negligible smoke when fired, unlike the older gunpowder (black powder) which they replaced. The basis of the term smokeless is that the combustion products are mainly gaseous, compared to around 55% solid products (mostly potassium carbonate, potassium sulfate, and potassium sulfide) for black powder. Despite its name smokeless powder is actually not completely smoke-free and does not take the form of a true powder.

Smokeless powder allowed the development of modern semi- and fully automatic firearms. Burnt blackpowder leaves a thick, heavy fouling which is both hygroscopic and corrosive. Smokeless powder fouling exhibits none of these properties. This makes an autoloading firearm with many moving parts feasible (which would otherwise jam or seize under heavy blackpowder fouling). Smokeless powders are classified as, typically, division 1.3 explosives under the UN Recommendations on the transportation of Dangerous goods - Model Regulations, regional regulations such as ADR and national regulations, such the United States' ATF. However they are used as solid propellants, so in normal use they undergo deflagration, rather than detonation.

Source: en.wikipedia.org

Smokeless powder

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