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I'm wondering the same, as in a comparison of my chrome lined barrel in my M-4 vs. the Hoppes aluminum cleaning rod. Based on my knowledge (BA in Geosciences) I'd say its somewhere around a 4-5.
Here is a comparison example from Mohs as on Wikipedia:
"On the Mohs scale, a pencil "lead" (graphite) has a hardness of 1; a fingernail, 2.5; a copper penny, about 3.5; a knife blade, 5.5; window glass, 5.5; and a steel file, 6.5.[9] Using these ordinary materials of known hardness can be a simple way to approximate the position of a mineral on the scale."
From http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness
Since bullets are copper jacketed, I'd imagine going down a chrome-lined barrel isn't going to harm the integrity or smoothness of chrome. There is a scale for comparison on the above link as well for approximation of common materials related to their position on the scale.
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What is the name of the mineral hardness scale?
The mineral hardness scale is called the Mohs scale of mineral hardness, named after German geologist Friedrich Mohs who created it in 1812.
What is the difference between uranium hard and soft ore?
It is a difference between the hardness, generally expressed in the Mohs scale.
What is Bauxite's hardness?
Bauxite has a hardness ranging from 1 to 3 on the Mohs scale of mineral hardness. This makes it a relatively soft mineral compared to others.
What is the hardness of uraninite on the Mohs scale?
The Mohs hardness of uraninite, the primary ore of uranium, is 5 to 6. This mineral is commonly called pitchblende, and is largely composed of oxides of uranium. Mohs scale is usually applied to minerals, and not to "pure metals" like uranium. Use the link below to check facts and learn more.
What is the hardness of iron on the Moh's scale?
Iron is not a mineral used in Moh's hardness scale.
How hard is iron ore on moh's hardness scale?
The minerals that comprise the various iron ores have varied Mohs' hardness. Hematite: 5.5-6.5 Magnetite: 5.5-6.5 Limonite: 4-5.5 Pyrite: 6-6.5
What is the mohs number of iron ore?
There are many different iron ores, so each would have a different hardness.
What is the hardest mineral and what is its hardness on the Mohs scale?
Answer 1Mohs Hardness Scale is a comparative way of measuring the hardness of a rock or mineral - that is, its resistance to scratching. It is usually used with minerals because rocks tend to have a heterogeneous consistency and therefore varying degrees of hardness.The Mohs scale goes from 1 to 10, with one being the softest mineral and ten being the hardest. There are minerals that are considered "indicators" and are known to have a specific, constant hardness value. These indicator minerals, with their hardness values, are:Talc: 1 (softest)Gypsum: 2Calcite: 3Fluorite: 4Apatite: 5Feldspar: 6Quartz: 7Topaz: 8Corundum: 9Diamond: 10 (hardest)A set of common objects with known hardness values is often used to estimate the hardness of an unknown sample, by attempting to scratch it. The average human fingernail has a hardness of 2.5 and a copper penny has a hardness of 3.5. A stainless steel blade is about 6.5 and a section of average window glass is approximately 5.5._______________________________________________________Answer 2The Mohs scale of mineral hardness is based on the ability of one natural sample of matter to scratch another mineral. The samples of matter used by Mohs are all different minerals. Minerals are pure substances found in nature.1 = talcum, softest10= diamond, hardestFurther reading via 'Related links'A Mohs hardness scale is a graph. This graph shows information on the body and the hardness.
What is Chrome ore?
Chrome ore is usually for production of ferrochromium and chrome, which is widely used in metallurgical industry, refractory matter, chemical industry and so on. Chrome ore is one of the most valuable metal ore in the world. Chrome ore mining and beneficiation is an important industry in some countries such like Pakistan (Muslim Bagh) South Africa, and so on.
What is the standard chrome ore specific gravity?
The standard specific gravity of chrome ore typically ranges from 4.2 to 4.8.
Which is the hardest metal to be separated fromiys ore in the reactivity series?
The hardest metal to separate from its ore in the reactivity series is typically sodium and potassium. This is because they are highly reactive metals that form strong bonds with other elements, making it difficult to extract them from their ores using traditional methods like reduction with carbon.
What kind of streak does uranium have?
Uranium ore - Uraninite - has a black streak and a hardness of 5 to 6, which is about the same as steel.
