CNC Machining Materials

Garolite G-10

At a glance

Processes

CNC Mill
CNC Lathe

Lead Time

As fast as 7 days

Colors

Green, yellow

Tolerance

With drawing: as low as +/- 0.005 mm
No drawing: ISO 2768 medium

Price

$$$

Applications

Circuit board substrates, jigs, fixtures, boating applications (as it does not absorb water)

About the material

Garolite G-10 (also known as phenolic and epoxy-grade industrial laminate) is a composite material with a low coefficient of thermal expansion. Additionally, it does not absorb water and is an excellent insulator, which makes it really useful for electronics applications.

Material Properties

Tensile Strength

35,000-50,000 PSI

Elongation at Break

Not rated

Hardness

Rockwell M110

Density

0.069 lbs / cubic in

Maximum Temperature

265° F

McMaster Part Number

8667k151

Material Finish

Garolite G-10 comes in a variety of mostly opaque colors (such as green and yellow, depending on availability). It is smooth and has a matte surface when machined. Additionally, Garolite G-10 can be machined to a variety of surface roughnesses.

Design Recommendations

Min Wall Thickness

1.0 mm

Min End Mill Size

0.8mm (0.03 in)

Min Drill Size

0.5 mm (0.02 in)

Max Part Size

1200 x 500 x 152 mm [x,y,z] (mill)
152 x 394 mm [d,h] (lathe)

Undercuts

Square profile, full radius, dovetail profiles

Radii : Depth

Depth must not exceed 12x drill bit diameter.
For end mills, depth must not exceed 10x tool diameter.

Garolite G-10 FAQs

What is machined G10?

G-10 (also known as phenolic and epoxy-grade industrial laminate) is a high-pressure fiberglass laminate, a type of composite material with a low coefficient of thermal expansion. It is a flame resistant composite material used by many aerospace companies. It is also a strong material that does not absorb water which makes it an excellent insulator and really useful for electronics applications.

Is G10 stronger than aluminum?

G10 and aluminum are comparable in strength and durability. G-10 is a little lighter and more resistant to temperature change. Aluminum is quite a bit more rigid and is more resistant to impact.

What is G10 used for?

G10 is a fiberglass material that is most often used in the making of circuit boards. It is more stable and resistant to corrosion due to not being a metal. It is generally used in the medical, aerospace, and marine industries.

What is the difference between Garolite and phenolic?

They are both phenolic laminates. However, Garolite is a brand name for G10, which is a fiberglass laminate. Other phenolics are made with paper, linen or other woven fabrics.

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