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Shape
Disc
Rod
Round Tube
System of Measurement
Inch
Metric
Diameter
1/16"
0.072"
5/64"
1/8"
0.137"
3/16"
0.197"
13/64"
1/4"
0.264"
5/16"
3/8"
1/2"
5/8"
3/4"
7/8"
1"
1
3/32"
Length
1/16"
1/8"
3/16"
1/4"
3/8"
1/2"
17/32"
5/8"
21/32"
3/4"
13/16"
7/8"
31/32"
1
1/8"
1
1/4"
1
3/8"
1
5/8"
1
7/8"
2
1/8"
2
3/8"
3"
4"
5"
6"
7"
9
1/2"
12"
18"
24"
36"
OD
0.050"
0.062"
0.063"
0.094"
0.100"
0.109"
1/8"
0.156"
0.187"
0.188"
0.200"
0.219"
0.240"
1/4"
0.258"
0.313"
3/8"
0.438"
ID
0.016"
0.020"
0.025"
0.031"
0.04"
0.047"
0.050"
0.052"
0.063"
0.078"
0.094"
1/8"
0.156"
0.157"
0.160"
0.188"
0.219"
0.220"
Material
Ceramic
Glass
Mica
Maximum Temperature
Less than 500° F
500° F to 999° F
1,000° F to 1,999° F
2,000° F to 2,999° F
3,000° F or greater
Not Rated
Color
Beige
Black
Brown
Clear
Gray
Off-White
Silver
White
Clarity
Clear
Opaque
Thermal Conductivity @ Temperature
208 BTU⋅in/(hr⋅ft²⋅°F) @ 68° F
7.8 BTU⋅in/(hr⋅ft²⋅°F) @ 194° F
1.2 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
4.5 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
7.98 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
8.3 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
10.16 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
15 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
194.5 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
319 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F
138 BTU⋅in/(hr⋅ft²⋅°F) @ 20° C
1.265 W/(m⋅°C) @ 20° C
1.4 W/(m⋅°C) @ 20° C
2 W/(m⋅°C) @ 20° C
2.2 W/(m⋅°C) @ 20° C
4 W/(m⋅°C) @ 20° C
20 W/(m⋅°C) @ 20° C
21 W/(m⋅°C) @ 20° C
Fabrication
Annealed
Fired
Hot Rolled
Semi-Fired
Sintered
Tempered
Unfired
Hardness
Durometer 86D
Knoop 19 HK 0.1
Knoop 418 HK 0.1
Knoop 570 HK 0.1
Mohs 3
Rockwell A48
Rockwell A77
Rockwell B66
Rockwell C38
Rockwell C71
Rockwell C74
Rockwell H59
Rockwell H90
Rockwell 45N 70
Rockwell 45N 80
Rockwell 45N 81
Rockwell 45N 83
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
Minimum Temperature
-330° F
32° F
72° F
Not Rated
Export Control Classification Number (ECCN)
1C007
1C234
EAR99
DFARS Specialty Metals
Exempt
Density
0.075 lb/in³
0.076 lb/in³
0.08 lb/in³
0.09 lb/in³
0.095 lb/in³
0.1 lb/in³
0.104 lb/in³
0.112 lb/in³
0.117 lb/in³
0.14 lb/in³
0.21 lb/in³
RoHS
Compliant
Not Compliant
REACH
Compliant
Not Compliant
Modulus of Elasticity
9,700 ksi
12,000 ksi
26,000 ksi
29,000 ksi
30,000 ksi
41,000 ksi
42,000 ksi
50,000 ksi
54,000 ksi
60,000 ksi
91,000 ksi
63 kN/mm²
72 kN/mm²
Not Rated
Performance
Acid Resistant
Chemical Resistant
Creep Resistant
Easy Machine
Electrically Insulating
Erosion Resistant
Fracture Resistant
High Strength
High Temperature
Moisture Resistant
Pressure Rated
Thermal Shock Resistant
Wear Resistant
Refractive Index
1.46
1.47
1.78
2.1
Wall Thickness
0.015"
0.016"
0.025"
0.027"
0.031"
0.032"
0.039"
0.043"
0.044"
0.047"
0.05"
0.059"
1/16"
0.063"
0.074"
0.078"
0.079"
0.094"
0.098"
0.118"
1/8"
0.126"
0.137"
9/64"
5/32"
0.157"
11/64"
3/16"
0.197"
13/64"
7/32"
0.236"
1/4"
1 mm
1.5 mm
1.65 mm
1.8 mm
2 mm
2.2 mm
2.4 mm
2.5 mm
3 mm
Porosity
0%
2%
7%
13%
15%
30%
36%
48%
Compressive Strength
4,350 psi
9,000 psi
16,000 psi
20,000 psi
25,000 psi
32,000 psi
40,000 psi
72,500 psi
79,000 psi
140,000 psi
254,000 psi
300,000 psi
350,000 psi
384,000 psi
510,000 psi
565,000 psi
580,000 psi
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552 Products
Raw Materials
Ceramic
Hard and wear resistant, it also withstands corrosion and high temperatures
347 products
Glass
Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment
200 products
Mica
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