3105 aluminum sheet coil is also a kind of AL-Mn alloy, which has good anti-rust performance and good electrical and thermal conductivity;After the cold working method, its mechanical properties are higher and the surface is smoother; Henan Chalco strictly controls the processing quality, texture, grain structure, composition, etc. of its products to make its product performance reach the international advanced level; because of its good electrical and thermal conductivity performance, as well as good board surface flatness, can be used as PCB aluminum entry sheet with high board surface flatness requirements.
2 The product specifications of 3105 PCB aluminum entry sheet
* Alloy: 3105
* Temper: H18, H19
* Thickness: 0.12~0.25mm
* Width*Length: 790~1300mm or produced by Coiled
* Thickness tolerance (mm): +/-5%
* Width tolerance (mm): +0.5 /-0mm
* Length tolerance (mm): +0.5 /-0mm
* Diagonal tolerance (mm): ≤0.5 mm
* Standing specifications (specification):
1041mm x 1092mm, 940mm x 1244mm, 1041mm x 1244mm, 1092mm x1244mm, etc.
3 The product chemical composition and mechanical properties of 3105 PCB aluminum entry sheet
1)The Product chemical composition of 3105 PCB aluminum entry sheet
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Ni | Zn | V | Ti | Zr | Other | AL | |
| single | total | |||||||||||||
| 3105 | 0.6 | 0.7 | 0.3 |
0.3 -0.8 |
0.2 -0.8 |
0.20 | - | 0.40 | - | 0.10 | - | 0.05 | 0.15 | Remainder |
2)The Product mechanical properties of 3105 PCB aluminum entry sheet
| Alloy | Temper |
Thickness (mm) |
Mechanical properties | |||
| Tensile Strength（Mpa） |
Yield strength （Mpa） |
Elongation (%) |
||||
| standard value | standard value | A | A50mm | |||
| Not less than | ||||||
| 3105 | H18 | 0.12-0.20 | 195 | -- | -- | 1 |
| 0.20-0.25 | 195 | 180 | -- | 1 | ||
| H19 | 0.12-0.20 | 215 | -- | -- | 1 | |
| 0.20-0.25 | 215 | 190 | -- | 1 | ||
4 The product features of 3105 PCB aluminum entry sheet
1)3105 PCB aluminum entry sheet has good rust resistance and good electrical and thermal conductivity;
2) 3105 PCB aluminum entry sheet has higher mechanical properties and a smoother surface;
3) 3105 PCB aluminum entry sheet has good electrical and thermal conductivity, and good board surface flatness, which can quickly take away the heat generated during drilling.
5 The application of 3105 PCB aluminum entry sheet
3105 PCB aluminum entry sheet is used for ordinary circuit board drilling with higher flatness of the board surface and higher diagonal requirements
