Discontinued (Discontinued) GR3372 Highly Oriented Pyrolytic Graphite (HOPG)

Catalogue Number	GR3372
Composition	C
Density	2.255 - 2.265 g/cm3
Grade	ZYA, ZYB, ZYD, ZYH
Dimensions	12x12

Highly oriented pyrolytic graphite (HOPG) is a material produced by applying uniaxial pressure to deposited pyrolytic carbon at very high temperatures. Stanford Advanced Materials (SAM) has extensive experience in the manufacture and supply of high-quality optical products.

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Physical Properties
Interlayer Distance (002):	3.355 - 3.359 Å
Density:	2.255 - 2.265 g/cm³
Thermal Conductivity	16 - 20 Watts/cm K
Parallel (002):	approximately 0.8 Watts/cm K
Perpendicular (002):
Thermal Expansion	Marginally negative
Parallel (002):	20 x 10^-6 / K
Perpendicular (002):
Electrical Resistivity	3.5 - 4.5 x 10^-5 Ohm cm
Parallel (002):	0.15 - 0.25 Ohm cm
Perpendicular (002):

Grades	Mosaic Spread	Nominal Thickness [mm]**	*Minimum Size [mm]**	*Maximum Size [mm]**
ZYA	0.4° ± 0.1°	2	12 x 12	50 x 50
ZYB	0.8° ± 0.2°	2	12 x 12	50 x 75
ZYD	1.2° ± 0.2°	2, 4	12 x 12	50 x 75
ZYH	3.5° ± 1.5°	2, 4, 6, 8	12 x 12	75 x 75
* other sizes or specific mosaic distributions available on request
** Tolerance ± 0/-1 mm
Standard radii for single curved plates: 115, 225, 250, 510, 790, and 1,300 mm.

Standard size for curved monochromators (mm):
12 x 12, 20, 25, 40	20 x 20, 25, 40, 50
15 x 15, 25, 40, 50	25 x 25, 40, 50, 75
Thickness for curved plates 2 + 0/-1 mm.

Physical Properties
Spacing of Reflecting Planes (002):	3.355 - 3.359 Å
Density:	2.255 - 2.265 gem-3
Thermal Conductivity	16 - 20 Watt/cm K
Parallell (002):	ca. 0.8 Watt/cm K
Perpendicular (002):
Thermal Expansion	Slightly negative
Parallell (002):	20 x 10-6 / K
Perpendicular (002):
Electrical Resistivity	3.5 - 4.5 x 10-5Ohm cm
Parallell (002):	0.15 - 0.25 Ohm cm
Perpendicular (002):

Discontinued (Discontinued) GR3372 Highly Oriented Pyrolytic Graphite (HOPG)

Highly Oriented Pyrolytic Graphite (HOPG) Description

Highly Oriented Pyrolytic Graphite (HOPG) Specifications

Highly Oriented Pyrolytic Graphite (HOPG) Applications

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