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How are pencils classified?

Release time:

2023-09-28 16:58

Tools/Materials

There are many kinds of pencils. Pencil specifications are usually represented by H and B. "H" is the beginning letter of English "Hard" (hard), which indicates the hardness of pencil lead. The larger the number in front of it, the harder the lead core is and the lighter the color is. "B" is the first letter of "Black" (black) in English, which represents the composition of graphite and indicates the soft quality of pencil lead and the obvious degree of writing. The larger the number in front of it, the thicker and darker the color.

Classification of properties and uses

Graphite Pencil

Pencil lead with graphite as the main raw material of the pencil. Can be used for drawing and general writing. The hardness mark of graphite lead is generally "H" for hard pencils, "B" for soft pencils, "HB" for pencils with moderate hardness, and "F" for pencils with hardness between HB and H. Graphite pencils are divided into 18 hardness grades such as 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H, 10H, etc. The larger the number in front of the letter, the harder or softer it is respectively. In addition, there are 7B, 8B, 9B3 grades of soft pencils to meet special needs such as painting.

 

Key words:

Pencil

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