HB pencil is an average type pencil for everyday usage. Shop from various types of number pencils at Alibaba.com
HB lead pencil mark the middle or the medium type of characteristics in the graphite pencil hardness grading scale. Its tone is also marked #2 in the United States, and TM in Russia. Blacklead pencil is made from a mixture of graphite and clay. If more clay is mixed, the harder the lead is and the pencil draws a light gray color. There is no standardized way of the mixture in grades, and the standard for HB lead may vary depending on the brand of pencils. For writing purposes hb mechanical pencil is widely used as they are less bothersome than wooden pencils that need sharpening.
F pencils stand for either finesse or firm, and is also a medium grad pencil but stand on the harder scale than HB. H and B pencils mark each end of the grade of pencils. B pencil stand for blackness, and is extremely soft with higher numbers on front. In other words, 5b pencil is harder than 2b lead pencil. H pencil stand for hardness, and the higher the number is they have light gray colors with hard texture.
HB pencil drawing is not a popular choice, yet is more used in writing or linear drawing.2H pencil drawing are used in drawing detailed lines, and is used in technical drawing. H pencils with higher numbers are specially used in cartography, lithography, and xylography. 2B Pencil drawing display a darker and softer texture and is used in freehand drawing. Drawing pencil 4B and in higher numbers are more common in artistic sketches and drafts.
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