Graphite lead core
The company's business scope is to produce pencil core products of various specifications, H class 9H-H; F; HB; B class B-12B, 14B, 15B; woodworking core, charcoal drawing core, graphite pen, sketch series, etc.
Lead core quality standard
|
Variety |
Core diameter Ф mm |
Core tip force≥ N |
Concentration D |
Hardness MPa |
Slip≤ |
Wear≤ |
|
9H |
2.00 |
13.72 |
0.05-0.06 |
578-647 |
0.225 |
0.5 |
|
8H |
2.00 |
13.72 |
0.07-0.08 |
539-598 |
0.225 |
0.5 |
|
7H |
2.00 |
13.72 |
0.07-0.08 |
500-559 |
0.215 |
0.6 |
|
6H |
2.00 |
13.23 |
0.09-0.10 |
441-519 |
0.215 |
0.7 |
|
5H |
2.00 |
13.23 |
0.09-0.10 |
382-461 |
0.205 |
0.9 |
|
4H |
2.00 |
12.25 |
0.11-0.12 |
333-402 |
0.205 |
1.1 |
|
3H |
2.00 |
12.25 |
0.11-0.12 |
284-353 |
0.205 |
1.3 |
|
2H |
2.00 |
11.76 |
0.13-0.14 |
245-304 |
0.185 |
1.5 |
|
H |
2.00 |
11.27 |
0.13-0.14 |
225-265 |
0.185 |
1.7 |
|
F |
2.00 |
10.78 |
0.15-0.17 |
196-235 |
0.180 |
1.7 |
|
HB |
2.1O |
9.80 |
0.18-0.20 |
176-225 |
0.175 |
1.7 |
|
B |
2.20 |
9.31 |
0.22-0.24 |
147-176 |
0.175 |
2.2 |
|
2B |
2.30 |
9.31 |
0.28-0.30 |
127-157 |
0.175 |
2.5 |
|
3B |
2.40 |
9.31 |
0.32-0.34 |
108-137 |
0.185 |
3.0 |
|
4B |
2.50 |
8.82 |
0.36-0.38 |
88-118 |
0.185 |
4.0 |
|
5B |
2.80 |
7.35 |
0.40-0.42 |
69-98 |
0.195 |
5.0 |
|
6B |
3.00 |
6.86 |
0.44-0.46 |
49-78 |
0.195 |
6.0 |
|
7B |
3.20 |
6.37 |
0.48-0.50 |
|
|
|
|
8B |
3.40 |
5.86 |
0.52-0.54 |
|
|
|
|
10B |
3.80 |
4.88 |
0.56-0.58 |
|
|
|
|
12B |
4.00 |
3.89 |
0.60-0.62 |
|
|
|
|
15B |
4.00 |
2.89 |
0.64-0.66 |
|
|
|
0086-532-87388065
info@qdhaida.com.cn
QINGDAO HAIDA GRAPHITE
ADD：Liugezhuang Village, Tianzhuang Town, Pingdu ,Qingdao City,China
TEL：0086-532-87388065, 80819787
FAX：0532-87389018,0532-80819787
EMAIL：info@qdhaida.com.cn
QINGDAO HAIDA GRAPHITE
ADD：Liugezhuang Village, Tianzhuang Town, Pingdu ,Qingdao City,China
TEL：0086-532-87388065, 80819787
FAX：0532-87389018,0532-80819787
EMAIL：info@qdhaida.com.cn
QINGDAO HAIDA NEW ENERGY MATERIAL
ADD：Xinhe Technology Industrial Base,Pingdu, Qingdao city, China
TEL：0086-532-68081768
FAX：0532-68081669
EMAIL：info@qdhaida.com.cn
QINGDAO HAIDA JINGRUI GRAPHITE
ADD：Liugezhuang Village, Tianzhuang Town, Pingdu ,Qingdao City,China
TEL：0086-532-87388065, 80819787
FAX：0532-87389018,0532-80819787
EMAIL：info@qdhaida.com.cn