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Do you have a 'pencil lead hardness chart' If so please send it to you?
Wiki User
∙ 16y ago
In order, the leads are (from softest to hardest): 9B/8B/7B/6B/5B/4B/3B/2B/B/HB/F/H/2H/3H/4H/5H/6H/7H/8H/9H HB is the most commonly used lead for general purposes. The softer leads are used for art drawing, the harder for fine ledger work.
Wiki User
∙ 16y ago
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What is the percentage of lead in lead pencil?
The percentage is 0%. "Lead" in this case is a misnomer. Pencil "Lead" is made of graphite (an allotrope of carbon) and different levels of clay to control hardness.
Is pencil lead is Pb free?
There is no lead in pencil - Pencil is made from graphite
What is the formula for pencil lead?
The formula for pencil lead is c3,h2o
What objects can lead be made into?
pencil . The 'lead' in a pencil is actually graphite.
Does sucking on a lead pencil give you lead poisoning?
Actually, the "lead" of a pencil is not lead at all. It is actually graphite. If it were lead, you would get very sick and die from lead poisoning...and as tasty as that pencil tip may look, it probably wont taste good and you really shouldn't eat it. Nonetheless, the graphite probably wont hurt too bad even if you decide to eat it.
What does the letter H for on pencil?
H indicates the Hardness of the lead inside a pencil
Why do pencils have numbers?
The numbers indicate the relative hardness of the pencil lead.
What does 2b the pencil stand for?
2B stands for 2Black. It is the softness or hardness of a pencil. If you thought there was only one pencil type, think again. There are a variety of lead pencils, ranging in softness or hardness. ^^
Is a 7 mechanical pencil soft lead?
the .7 has nothing to do with the hardness of the lead. The number is the diameter of the piece of lead.
What is a number 2 pencil?
The # is reference to the hardness of lead A number 2 pencil is averagely hard aka HB
What is the percentage of lead in lead pencil?
The percentage is 0%. "Lead" in this case is a misnomer. Pencil "Lead" is made of graphite (an allotrope of carbon) and different levels of clay to control hardness.
Is 0.5 lead the same thing as a number 2 pencil?
Actually, what you are asking is referring to the hardness of the pencil. So both, 0.5mm and 0.7mm are the same hardness as number two pencils. The number of lead, 0.5, is a thinner lead in diameter to the 0.7.
How thick is pencil lead?
Pencil lead is a brittle solid and it is graphite made in different hardness's. The thickness and shape of the actual rod of graphite can vary greatly
Is 0.7 lead the same as a number two pencil?
No. 0.7 lead is just the dimension (in millimeters) The 0.7 has nothing to do with the hardness (which is what the No. 2 refers to). You can purchase 0.7 leads of various hardness that all will fit in the same mechanical pencil.
If the 2 pencil is the best pencil why is it still 2?
The number two in reference to a pencil denotes the relative hardness of the graphite or "lead" that is in the pencil, HB being softer and three being harder, etc.
Is a 7 mm mechanical pencil the same as a number 2 pencil?
The "number 2" designation refers to the "hardness" of the lead. The higher the number, the "harder" The "7mm" designation refers to the "thickness" of the lead. The higher the number, the thicker. They are not the same pencil.
What do the initials hb on a pencil stand for?
its the HB graphite grading scale, for hardness and darkness of the graphite on paper. the higher the number, like a number 2 pencil, the harder the lead.
