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When detonated, C-4 rapidly decomposes to release nitrogen, water and carbon oxides as well as other gases. [8] The detonation proceeds at an explosive velocity of 8,092 m/s (26,550 ft/s). [14] A major advantage of C-4 is that it can easily be molded into any desired shape to change the direction of the resulting explosion.
less than 0.6% of water (small amount of marker or odorising taggant) It is less volatile than C-3 and has less tendency to harden at low temperature. It has a density 1.48–1.60 g/ml, does not become hard even at −55 °C (−67 °F), and does not exude at +77 °C (171 °F).
Detonating cord is rated in explosive mass per unit length. This is expressed in grains per foot in the United States, or in grams per metre elsewhere. A "grams per metre" rating will be roughly one fifth the "grains per foot" rating.
Petroleum-based rust-inhibitors provide several benefits, including the ability to creep over metal, covering missed areas. [citation needed] Additionally, a petroleum, solvent-free rust inhibitor remains on the metal surface, sealing it from rust-accelerating water and oxygen. Other benefits of petroleum-based rust protection include the self ...
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Rust, which is primarily composed of iron oxides (Fe 2 O 3), also reacts with weak acids to form soluble iron salts. The reaction can be simplified as: Fe 2 O 3 + 6H + → 2Fe + 3 + 3H 2 O. In this process, iron ions (Fe + 3) are produced along with water, making the rust easier to remove without causing damage to the underlying metal or ...
The salt spray test (or salt fog test) is a standardized and popular corrosion test method, used to check corrosion resistance of materials and surface coatings.Usually, the materials to be tested are metallic (although stone, ceramics, and polymers may also be tested) and finished with a surface coating which is intended to provide a degree of corrosion protection to the underlying metal.
Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture.Rust consists of hydrous iron(III) oxides (Fe 2 O 3 ·nH 2 O) and iron(III) oxide-hydroxide (FeO(OH), Fe(OH) 3), and is typically associated with the corrosion of refined iron.