Is there any difference between HB B H for hard pencils?

Differences: 1. Different degrees of softness and hardness.

Generally, "H" is used for hard pencils, "B" for soft pencils, and "HB" for pencils with moderate hardness and softness.

2. The handwriting color is different.

The handwriting of Hb pencils is moderately black, the B pencils are the blackest, and the H pencils are the least obvious of black handwriting.

3. The scope of application is different.

Class H pencils are suitable for objects with relatively hard or rough interfaces, such as woodworking scribing, mechanical drawing, etc.

The refill of the HB pencil is moderately hard, which is suitable for writing (writing) under normal circumstances.

Type B pencils, with relatively soft refills, are suitable for drawing (especially sketching), where 2B pencils are used to fill in some machine-recognizable cards, such as answer sheets.

There is a difference between HB, B, and H of hard pencils Class B is soft lead, generally B-12B, the larger the number, the thicker the lead bar, which is suitable for the dark part; Class H is hard lead, generally H-6H, the larger the number, the thinner the lead bar, suitable for the bright part; HB is neutral, which is equivalent to the "0" in the number axis between 0+ and 0-, which is suitable for expressing bright midtones.

h means hard, the larger the number in the front, the harder the lead core, the less graphite content in the lead core, the more lead content, the lighter the color of the word b means soft, the larger the number in front of the lead, the softer the lead core, the more graphite content in the lead core, the less lead content, the darker the color of the word hb is in the middle.

h is for hardness, it is for blackness, it is a neutral pencil, that is, the writing pencil used by elementary school students is softer, and the black pencil is harder, that is, there is more clay added to graphite.

The hardness of H is harder than that hard, and B is less rigid than not, and Hb is more neutral between these two.

They're good. I don't have any room ... Well..

is what they say ... The hardness is different... Of these, h is the hardest.

followed by HB and then B (i.e. 1B) = then 2B 3B. 4b 56789b

It is used by elementary school students when they are learning to writeHB pencilIt's more appropriate.

Because beginners like to use force, it is easy to break the refill. Use 2B pencil, the refill is softer, so it will cause the color of the written words to be darker than the blur is not easy to wipe clean with an eraser, and it will also cause the surrounding area to be dirty. HB is more suitable.

H is hardness, B is blackness, H-type series is light color and hard refill, and B-type series is black and soft! HB is the depth and hardness are moderate.

Origin

1662 in Nuremberg, Germany.

Built the world's first pencil factory - Shidelou Pencil Factory. Later, the German F. Kast founded the Fabo Karst Graphite Pencil Factory in Nuremberg, using sulfur, antimony and other binders to heat and mix with graphite to make lead cores, which made a big step forward in the manufacturing technology of graphite pencil shafts.

French N.J. Kant.

For the first time, the method of washing graphite was used to improve the purity of graphite, and graphite was bonded into a refill with clay, which was called Kant's method. The foundation was laid for the pencil industry. Later, the French chemist Comte.

After trial and error, the use of clay as a hardener resulted in a refill that was stronger and more wear-resistant than before, and this method was suitable for any graphite mine and was still in use until 2019.

2b good. 1. Different traces: There is no obvious difference between the pencil HB and 2B itself, but they can still be found in the details when using them. For example, the 2B pencil is more black and the marks are more obvious, while the HB pencil is hard.

It is higher, so it is harder, and the reason for this is that the main ingredients of the two are different, and the composition of the HB pencil is a bit more complex than that of the 2B.

2. The composition is different: the main component of B pencil lead is graphite, while HB pencil.

In addition to half of the graphite, some other colorless substances are added.

3. Different blackness: There is a big difference in the blackness of the two pencils, the blackness of the 2B pencil is higher, and the traces drawn are relatively black, while the blackness of the HB pencil is relatively low, and the color of the traces drawn is relatively light.

Class H pencil has a relatively high hardness of the refill, which is suitable for objects with relatively hard or clear interfaces, such as hand-drawn lines by Mu Zheng and field drawings; The refill of HB pencil has moderate hardness, which is suitable for writing under general circumstances, or for contouring; Type B pencils with relatively soft refills are suitable for drawing and can also be used to fill in some machine-recognizable cards.

4. Different hardness: 2b, hb, and 2h on the pencil are signs of the hardness of the pencil refill, and their hardness increases in turn.

The hardness of the pencil core is generally marked with "H" for hard pencils, "B" for soft pencils, "HB" for pencils with moderate hardness and softness, and "F" for pencils with hardness between HB and H.

Arrangement (from soft to hard): 9b, 8b, 7b, 6b, 5b, 4b, 3b, 2b, b, hb, f, h, 2h, 3h, 4h, 5h, 6h, 7h, 8h, 9h, 10h and other hardness grades.

B stands for softness and h stands for hardness, which is the difference between them.

Pencils, which are divided into hard lead and soft lead. Hard lead is generally represented by H, with H, 2H, 3H, 4H, 5H, the hardest, and the lightest pigment. Soft lead is generally represented by B, with B, 2B, 3B, 4B, 5B, the softest, and the darkest pigment.

The gel pen is denoted by HB. That is, hard lead is not easy to break, but it is lighter to draw; Soft lead is easy to break, but the color of the drawing is darker than that of B for the exam, mainly because it is darker and can be seen clearly when grading.

The hardness is different...

h is harder. b is not so hard in relation to.

HB is more neutral in between.

Class B is soft lead, generally B-12B, the larger the number, the thicker the lead bar, suitable for the dark part;

Class H is hard lead, generally H-6H, the larger the number, the thinner the lead bar, suitable for the bright part;

HB is neutral, which is equivalent to the "0" in the number axis between 0+ and 0-, which is suitable for expressing bright midtones.

h means hard, the larger the number in front of the lead, the harder the lead core, the less graphite content in the lead core, the more lead content, the lighter the color of the word.

b means soft, the larger the number in front of the lead, the softer the lead core, the more graphite content in the lead core, the less lead content, and the darker the color of the word.

HB is the in-between.

Hb neutral H1 slightly soft; It is suitable for mountain and gorge clouds and fog H2 soft, suitable for painting flowing clouds, B2 heavy, suitable for buildings, etc. B1 is suitable for distant light drawing. Others are required to be based on drawings and architecture, and are not used.

h is for hardness, is for blackness stool closed is a neutral commonly used jujube pencil, that is, the writing pencil used by primary school students is softer, black orange closed than harder, that is, graphite added a little more clay.

From h to 8b, the second lap is hard to soft, I know that Sakura Road is the shirt rent, and the softest 8b above is the hardest H

HB Pencil : Refers to a hard black pencil. hb=hard black The parameter HB refers to the hardness of lead, and the other parameters are 2H Hb b 2B, and the hardness of lead decreases sequentially. The lead of the pencil is made of a mixture of graphite and clay.

Adjust the hardness of the refill by adjusting the ratio of clay and graphite. The larger the proportion of clay, the harder the refill. HB pencil is a kind of pencil, in addition to HB, there are also liquid branches 1H to 6H, 1B to 6B pencil, where H represents the hardness of the pencil, the larger H, the harder the pencil; b represents the depth of black, and the higher the b value, the darker the pencil.

Therefore, the larger the h, the higher the composition of the clay; Conversely, the higher the b-value, the higher the composition of graphite.

2B pencil is a soft pencil, when applying a certain area, the soft pencil is easier to paint evenly, and has a metallic luster, and it is not easy to break In a variety of soft pencils, the effect of 2B is good and the cost is cheap. b=black h=hard hardness, the more b number, the darker and softer the pencil. The more the number of h, the harder it is, the lighter the color of the buried paulownia.

HB is intermediate. Pencils are divided into 10b, 9b, 8b, 7b, 6b, 5b, 4b, 3b, 2b, b, hb, f, h, 2h, 3h, 4h, 5h, 6h, 7h, 8h, 9h, 10h b is the soft ink deepest, 10b is the softest ink deepest, h is hard ink is shallow, 10h hardest ink is the lightest. According to the actual needs, the depth of the 2B pencil ink is suitable for the machine reading of the exam chart and easy to write.