Description

#16 GREEN PITCH is a semi-hard temporary cement used for a variety of blocking applications. #16 GREEN PITCH is commonly used for blocking together a series of lenses or work pieces that need to be edged or profiled. Other applications include Blanchard wheel work, spot blocking, surface protection, and a variety of uses where semi-hard, high tack materials are desired.

Application

Depending on application, #16 GREEN PITCH can be applied in two basic methods:

1. Pre-melt #16 GREEN PITCH in a controlled heating vessel, and apply or pour molten pitch to blocking plate or lap, and then mount the workpiece.
2. Pre-heat the blocking plate or lap and work piece, and wipe the pitch across the heated tool and mount the workpiece.

#16 GREEN PITCH can be removed from the parts by using UPI’s UNICLEAR or UNICLEAR II. For best results, please consult with UPI technical staff to recommend optimal processing conditions.

Benefits

• Unaffected by water and coolant
• High dielectric constant
• Lack of porosity
• Works well with diamond tooling
• Very dense and viscous material preferable for medium to thick bonding layers

Physical Characteristics

• Appearance: Solid Green
• Softening Point (°C): 56 ± 2
• Melting Point (°C): 66 ± 6
• Ball Penetration Test (70F, 500 g weight, 1hr) (in): 0.0013 ± 0.0012

Availability

Additional Product IDs

PB0016, PB0016NS