Carbon Blocks | McMaster-Carr

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	Material Material

Carbon

Carbon Fiber

Graphite

	System of Measurement System of Measurement

Inch

	Thickness Thickness

	Width Width

	Length Length

	Shape Shape


Rectangular Tube	Sheet and Bar

	Color Color

	Black
	Gray

	Flexibility Flexibility

Rigid

Not Rated

	Maximum Temperature Maximum Temperature

Less than 500° F

500° to 999° F

	Clarity Clarity

Opaque

	Backing Type Backing Type


Plain	Adhesive

	Tensile Strength Tensile Strength

	Texture Texture


Coarse	Smooth

	Appearance Appearance

	Minimum Temperature Minimum Temperature

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Performance Properties Performance Properties

High Strength

Multipurpose

	Surface Resistivity Surface Resistivity

1.1 × 10^-3
ohms/sq.

1.18 × 10^-2
ohms/sq.

1.96 × 10^-2
ohms/sq.

2.2 × 10^-3
ohms/sq.

2.36 × 10^-2
ohms/sq.

3.94 × 10^-2
ohms/sq.

5.5 × 10^-4
ohms/sq.

7.87 × 10^-2
ohms/sq.

10² ohms/sq.

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Maximum Temperature in a Vacuum Maximum Temperature in a Vacuum

4,500° F

5,000° F

	Construction Construction

	Composite Tensile Stiffness Rating Composite Tensile Stiffness Rating

199 Products

About Composites

Conductive Graphite Sheets and Bars

Ultra-Fine-Grain Conductive Graphite Sheets

This graphite is denser and slightly stronger than standard conductive graphite because it has a smaller grain.

Porous Conductive Carbon

Often used in filtering, this brittle, glass-like carbon has pores that allow fluid and air to flow through.

Compressible Graphite Sheets

Reinforced Compressible Graphite Sheets

A stainless steel insert makes this material stronger than standard compressible graphite.

Composites

Ultra-Strength Lightweight
Carbon Fiber Sheets and Bars

Known for its use in the aerospace industry, where a balance of weight and strength is critical, carbon fiber is now often machined into panels for structural framing, machinery components, and robotics.

Ultra-Strength Lightweight Carbon Fiber Square Tubes

Mount these lightweight tubes to flat surfaces in place of aluminum to create structural frames, machinery components, and robotics.

Ultra-Strength Lightweight Carbon
Fiber Sheets with Foam Core

A layer of foam is sandwiched between two pieces of carbon fiber to make a featherweight material that's even lighter than standard carbon fiber.

Distortion-Resistant Ultra-Strength
Lightweight Carbon Fiber Sheets

Layers of fibers alternating in four directions makes this carbon fiber stiff at the corners and edges, so it stands up to twisting forces.

Rigid Ultra-Strength Lightweight Carbon Fiber Sheets

Almost as stiff as steel and a fraction of the weight, these carbon fiber sheets are often used for structural framing, machinery components, and robotics.

Impact-Resistant Ultra-Strength
Carbon Fiber Sheets with Kevlar Core

Often used to build frames and structures, these lightweight sheets combine the strength and stiffness of carbon fiber with the impact resistance of Kevlar.

Composite Fabrics

Use these resin-free fabrics to reinforce or repair existing composites as well as create new composites. Mold custom-shaped composite parts by layering your choice of fabric with an epoxy.