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Each colour is represented by seven digits, grouped in a triple and two pairs, representing hue (000–360 degrees, angle in the CIELab colour wheel), lightness (same as in L*a*b*) and chroma (relative saturation). The three numeric components of almost all RAL Design colours are multiples of 5, the majority are divisible by 10.
Iron grey: RAL 7012: Basalt grey: RAL 7013: Brown grey or NATO olive: Austrian Armed Forces: RAL 7015: Slate grey: RAL 7016: Anthracite grey: Added for use by Wehrmacht: RAL 7021: Black grey: Added in 1937 for use by Wehrmacht under the name Dunkelgrau: RAL 7022: Umbra grey: RAL 7023: Concrete grey: RAL 7024: Graphite grey: RAL 7026: Granite ...
This page was last edited on 30 June 2012, at 11:33 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 8 January 2025. Variations of the color gray This article is about variations of the color gray. For other uses, see Shades of gray (disambiguation). For the 2011 novel, see Fifty Shades of Grey. For its 2015 film adaptation, see Fifty Shades of Grey (film). For the novel series, see Fifty Shades (novel ...
EN 10027-1 steel grade designation system. European standard steel grade names fall into two categories: [1] Steel specified by purpose of use and mechanical properties.
Welding (cast iron) AWS D14.1: Industrial mill crane welding AWS D14.3: Earthmoving & agricultural equipment welding AWS D14.4: Machinery joint welding AWS D14.5: Press welding AWS D14.6: Rotating Elements of Equipment AWS D14.9 Specification for the Welding of Hydraulic Cylinders AWS D15.1: Railroad welding AWS D15.2: Railroad welding practice ...
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The ability to discriminate color differences decreases rapidly as the visual angle subtends less than 12' (0.2° or ~2 mm at a viewing distance of 50 cm), [5] so color stimulus of at least 3 mm in diameter or thickness is recommended when the color is on paper or on a screen. [6]