Technical profiles for PCB drilling materials — alloy, temper, density, surface, coating, hardness and application behavior — separated from YUESHAN's commercial product pages.
Direct answer: The YUESHAN PCB Drilling Material Library is a technical reference for the materials used above and below a PCB drilling stack. It covers AA1100 H18 aluminum, HDF, melamine laminate, UV melamine, phenolic board, lubricant-coated aluminum, back-drill aluminum and PCB kraft paper — with emphasis on material properties, process behavior and engineering application.
Materials vs Products
Materials explains what each material is, how it behaves and where it fits in the drilling process. Products is for commercial selection, samples, qualification and quotations. If you are ready to buy or compare YUESHAN grades, go to the PCB drilling consumables product section.
PCB drilling performance is influenced by more than a material name. For each grade, engineers should compare the physical and process variables that affect drill entry, heat transfer, drill stability, hole-wall quality and exit burr. This library therefore focuses on alloy, temper, density, hardness, flatness, surface condition, coating system, thermal behavior and drilling role.
Entry-side materials sit above the PCB stack and influence drill positioning, first-contact stability, top-side burr and thermal conditions at the cutting edge. The key technical variables are aluminum alloy, temper, thickness, surface condition and — for coated grades — the lubricant or polymer coating system.
Technical profile for commercially pure AA1100 aluminum in H18 full-hard temper used as a standard PCB drill-entry layer. Review alloy, temper, thickness, flatness, surface condition and drilling behavior.
Technical reference for coated PCB entry sheets, including lubricant function, coating behavior, drill-temperature reduction, friction control and suitability for HDI, BGA and IC-substrate drilling.
Material profile for aluminum used in back-drilling stacks, with focus on dimensional stability, surface behavior and the role of the entry layer in stub-control operations.
Backup materials support the drilling stack from below. Their density, hardness, surface sealing, internal structure and dimensional stability influence drill exit support, exit burr, heat absorption, drill wear and stack consistency.
High-density fibreboard used as an economical general-purpose PCB drilling backup material. Compare density, flatness, moisture behavior and suitability for standard multilayer stacks.
Technical reference for melamine-laminate backup material where a firmer, more sealed exit-support surface is required than standard HDF.
UV-coated melamine material profile covering surface sealing, hardness, flatness and use in demanding multilayer and fine-hole drilling stacks.
Technical profile for phenolic-laminated backup material used where higher rigidity and tighter exit-quality control are required.
Technical profile for kraft paper used as a base, interlayer or process material in heat-resistant and phenolic backup-board constructions.
When comparing drilling materials, do not judge performance from material name alone. The most useful engineering variables are:
| Drilling role | Material family | Key properties to compare | Commercial section |
|---|---|---|---|
| Standard drill entry | AA1100 H18 aluminum | Alloy, temper, thickness, flatness, surface | Entry Boards |
| HDI / small-hole entry | Lubricant-coated aluminum | Base alloy, coating type, thermal / lubrication behavior | Lubricant Aluminum |
| General exit support | HDF | Density, flatness, moisture, surface | Backup Boards |
| Higher-grade exit support | Melamine / UV melamine / phenolic | Hardness, sealing, rigidity, exit-burr behavior | Backup Boards |
| Back-drilling | Back-drill aluminum | Thickness, flatness, coating / surface, dimensional stability | Back-Drill Aluminum |
No. The Material Library is for technical material profiles, properties and process behavior. The Products section is for commercial selection, samples, qualification and quotations.
Standard mechanical drilling commonly uses a full-hard aluminum entry sheet such as AA1100 H18. More demanding HDI or small-hole applications may use lubricant-coated aluminum.
Backup-board materials such as HDF, melamine laminate, UV melamine and phenolic board are used below the stack. The grade is selected according to cost, rigidity, exit-burr target and hole-quality requirements.
No. Alloy or board type is only a starting point. Temper, hardness, density, thickness, flatness, surface condition, moisture and actual drilling parameters all affect performance.