Henan Chalco’s Printed Circuit Board (PCB) entry sheets are manufactured with state-of-the-art equipment which matches international standards. Tight thickness tolerance, flatness, dimensional accuracy and grease-free surface and hardness optimal for burr-free drilling required in the manufacture of PCB are ensured.
Continuous upgrades and process improvement enable us to keep pace with the demands of its ever-growing clientele.
Specification
|
Alloy
|
Temper
|
Specification(mm)
|
||
|
Thickness
|
Width
|
Length
|
||
|
1100
|
H18
|
0.14~0.18
|
1244
|
1092 1041 940
|
|
1220
|
1067 1016 914
|
|||
MECHANICAL PROPERTY
|
Alloy
|
Temper
|
Thickness(mm)
|
U.T.S(Mpa)
|
Elongation(%)
|
|
1100
|
H18
|
0.14-0.18
|
170-190
|
>=2
|
TOLERANCE
|
Thickness(mm)
|
Width(mm)
|
Length(mm)
|
Squareness (mm)
|
|
+/-0.005mm
|
1
|
1
|
<=2
|
Chemical Composition limits(WT.%)
|
Alloy |
Si |
Fe |
Cu |
Mn |
Mg |
Cr |
Ni |
Zn |
Ti |
Al |
|
1100 |
0.95 |
0.05~0.20 |
0.05 |
- |
- |
- |
0.10 |
- |
Remains |
|
Advantages
1. AA1100-H18 can protect the circuit board against scratches and pressing marks.
2. It improves the nicety degree of the drilling position. It makes the drilling have guidance so that the drill works without deflection.
3. It significantly lengthens the life of the drill bit. Its specific alloy composition can keep the cleanness and the cooling of the drill bit. Whats more, it is a good conductor of heat so it prevents overheating of the drill bit and it can avoid the oxidation of the surface.
