PROVIDING SOLUTIONS TO
YOUR PLASTIC REQUIREMENTS
FOR OVER 40 YEARS

G11 Plastic Machining

G11 epoxy resin is an ideal material for parts and components that require extremely high strength, high dimensional stability, and high creep resistance across a wide temperature range. Sometimes referred to as G11-FR5 or G11 laminate, this glass epoxy material is commonly used for terminal boards, electric rotor insulation, electronic test equipment, and high humidity applications. Although the material can be difficult to machine with accuracy, Upland Fab has the experience and expertise to fabricate high precision laminate parts from G11 plastic.

 

G11 Epoxy Resin

 

Like other phenolic laminates, G11 epoxy resin is produced by applying high heat and pressure to multiple stacked layers of specialty materials, which have been impregnated with synthetic thermoset resins. The heat and pressure polymerizes those disparate layers into a single, laminated material.

 

G11-FR5 is extremely strong and stiff, with excellent electrical properties and a very low coefficient of thermal expansion. It exhibits very low moisture absorption and is flame retardant. These and other factors make G11 plastic ideal for electronic and electromechanical components and high-humidity environments.

 

Precision Machined G11-FR5 Parts

 

Because of its unique makeup, accurately machining G11-FR5 presents a challenge. Upland Fab utilizes multi-axis CNC machining and special tools to produce high precision, tight tolerance G11 plastic parts. CNC technology ensures perfect repeatability from the first piece to the last, and enables us to fabricate parts with minimal time devoted to handling and fixturing. In many cases, even parts with very intricate geometries can be completed in a single operation for fast and efficient service.

 

Through DPD/MBD processes (Digital Product Definition/Model-Based Definition), we can work directly from your CAD models or other digital design files. This improves accuracy and helps us eliminate manufacturing errors, resulting in higher quality parts at lower costs

 

Stay Up to Date with Upland Fab’s Top-Flight Communication

 

We know that communication is critical to success. With that in mind, we provide consistent, reliable updates to you informed on the progress of your project. And, when you work with Upland Fab, you’ll have a single point of contact throughout the entire process, making it easier to get the information you need.

 

 

Other Materials We Work With

Are you looking for another material? We have the ability to machine many different materials take a look below at some of the other plastics we work with. 

 



Are you interested in taking a deeper look into which material you should be using? Contact us and we'll be happy to personally connect with you and discuss your application in more detail! 

 

 

Contact Us Today to Discover the Upland Edge

 

Upland Fab is the leader in G11 plastic machining. Request a quote to get started, or contact us to discuss your project.

 

Properties of G11 Epoxy Resin

ASTM or UL test Property G-3 G-5/G-9 G-7 G-10 G-11
  PHYSICAL          
D792 Density (lb/in³)
(g/cm³)
0.065
1.80
0.067
1.85
0.065
1.80
0.065
1.80
0.065
1.80
D570 Water Absorption, 24 hrs (%) 2.65 0.60 0.10 0.10 0.20
  MECHANICAL          
D638 Tensile Strength (psi)
-lengthwise
42,000
34,000
61,600
51,100
20,000
-
45,000
38,000
43,000
37,000
D790 Flexural Strength (psi)
-lengthwise
-crosswise
40,500
34,000
61,600
51,100
30,000
-
75,000
65,000
80,000
70,000
D790 Flexural Modulus (Kpsi)
-lengthwise
-crosswise
1,800
1,400
2,000
1,700
1,600
-
2,700
2,400
3,000
2,700
D256 IZOD Notched Impact (ft-lb/in)
-lengthwise
-crosswise
12.0
11.0
12.5
8.5
13.0
-
14.0
12.0
12.0
9.0
D695 Compressive Strength (psi) 55,000 65,000 50,000 65,000 63,000
D785 Hardness, Rockwell M M110 M115 M105 M110 M112
  THERMAL          
D696 Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
-lengthwise
-crosswise
0.83
1.00
0.83
1.00
0.72
0.90
0.55
0.66
0.72
0.83
- Max Operating Temp (°F / °C) 340 / 170 285 / 140 430 / 220 284 / 140 329 / 165
C177 Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)
2.0
7.0
2.0
7.0
2.0
7.0
2.0
7.0
2.0
7.0
UL94 Flammability Rating H-B V-0 H-B H-B H-B
  ELECTRICAL          
D149 Dielectric Strength (V/mil) short time, 1/8" thick 460 300 350 800 900
D150 Dielectric Constant at 1 MHz 7.3 6.3 4.5 5.0 4.5
D150 Dissipation Factor at 1 MHz 0.023 0.019 0.018 0.019 0.020
D495 Arc Resistance (sec) 180 180 240 100 120

[G11 material chart]

 

Contact Upland Fab to Learn More About G11 Plastic Machining

 

We have been providing top-flight plastics and composite machining in Southern California since 1970. Contact Upland Fab to learn more or request a quote to get started on your G11 laminate machining project.

 

 

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