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Hardness scale
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
Quantitative units by means of which the relative hardness of minerals and metals can be determined, which for convenience is expressed in mohs, knoop, or scleroscope units for minerals and vickers, brinnell, or rockwell units for metals.
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Hardness, английский
- Dureté
- A property of wood that enables it to resist indentation. it is measure in kn and is often determined by the janka hardness test.
- The resistance of a substance to surface abrasion.
- Твердость
- A property of wood that enables it to resist indentation.
- A diamond’s ability to resist scratches
- Generally measured using the mohs scale. resistance a material offers to scratching or abrasion.
- As used by individuals associated with the drilling and bit-setting industry, the relative ability of a mineral to scratch another mineral or to be penetrated by a knoop indenter; also, the relative ability of a metal to resist being penetrated by the indenter point of a vickers, brinnell, or eockwell hardness-testing apparatus.
- Твёрдость; жёсткость; стойкость ~ of water жёсткость воды
- 1. when used in reference to water, hardness is the total parts per million (ppm) of calcium an caco3 plus the magnesium expressed as equivalent caco3 [ppm hardness (as caco3) = (ppm ca x 2.497 + ppm mg x 4.116)]. 2. used in reference to pulp to denote the degree of delignification.
- Resistance of a material to indentation or scratching
- A measure of the ability of a material to withstand penetration by a hard pointed object. regarding thermal interface materials, this property is usually inversely proportional to the ability of a material to conform to uneven surfaces. hardness shore a (shore d, shore )
- Resistance of metal to plastic deformation, usually by indentation. however, the term may also refer to stiffness or temper or to resistance to scratching, abrasion, or cutting.
- In materials science, the resistance of a material to deformation, scratching, abrasion, or cutting. see also brinell hardness; rockwell hardness.
- Resistance of metal to denting, to plastic deformation by bending or to mechanical deformation by scratching, abrasion or cutting. typically measured by indentation.
Hardness, английский
Hardness conversion, английский
Перевод твердости (изменение числа твердости, определенного одним методом, на эквивалентное число твердости по другой шкале)
Hardness gage, английский
Hardness number (hb) — число твер-дости по бринеллю., русский
Hardness of water, английский
Hardness pencils, английский
Hardness penetration curve, английский
Кривая прокаливаемости, кривая глубины закалки
Hardness plates, английский
Hardness points, английский
Hardness scale units, английский
Ohs knoop 1 (?) 2 32 3 135 4 163 5 395 6 560 7 710-790 8 1,250 9 1, 700-2, 200 >9 2,800 >9 3,200 >9 3,500 10 8, 000-8, 500
Hardness table, английский
Hardness test, английский
A determination of the relative hardness of a mineral, as made on a specimen, using appropriate hardness-testing apparatus and techniques. see hardness and hardness scale.
Hardness test — определения твердости по кнупу., русский
Hardness testing, английский
By means of instruments such as brinnel, rockwell, scleroscope, vickers, etc.
Hardness wheel, английский
Scale, английский
- The array of indicating marks and figures in relation to which the position of an index is observed (e.g., a scale plate on a recorder).
- Lb measure the weight or volume of a log or load of logs (24).
- A thin coating or layer, usually calcium on the bottom of a tank or interior parts that may prevent heat transfer.
- Salts formed and deposited inside the water heater or on fixtures. sometimes referred to as lime deposits.
- A coating or layer (usually lime, biocarbonate or calcium) on the bottom of a tank or interior parts, that may prevent heat transfer.
- Шкала; масштаб
- Space checkout and launch equipment
- 1. a thin flat piece of something such as dead skin 2. same as tartar 3. a system of measurement or valuation based on a series of marks or levels with regular intervals between them a pay scale 4. same as scales verb to remove the calcium deposits from teeth
- Escama
- Масштаб (карты)
- An old word for commercial emporium, derived from scala. also, the graduated divisions by which the proportions of a chart or plan are regulated. also, the common measures of the sheer-draught, &c. (see gunter`s line.)
- Steal, e.g., someone scaled my iphone last night china. it’s not kif.
- Payment of different rates of interest on cds of varying maturities. a bank is said to "post a scale." commercial paper dealers also post scales.
- The concept of size relationships.
- Oxide formed on metal by chemical action of the surface metal with oxygen from the air.
- (1) layer of adherent oxidation product on the surface of a metal, caused by elevated temperature exposure to an oxidizing atmosphere. (2) layer of insoluble constituents on a metal surface, as in cooling tubes and water boilers. compare corrosion; rusting.
Scale, английский
Scale, английский
Scale beam, английский
Quantitative, английский
- A квантитативный
- Количественный
Determined, английский
- A предопределённый
- Определенный
Convenience, английский
Удобство
Scleroscope, английский
Склероскоп (прибор для определения твёрдости по методу шора)
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Vertical ring drilling, английский
Radial drilling in a vertical plane underground.
Pump disc, английский
Pump disk. = cup leather, q.v.
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