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Alumina Washer
Alumina Washer are ceramic washers offered by Goodfellow within its extensive range of bolts and fasteners. With 101 size variations, these washers provide high hardness and compressive strength. Alumina Washer are electrically insulating and chemically inert, making them ideal for applications in corrosive environments. They also have high thermal conductivity, allowing them to dissipate heat in electronic components. Alumina's hardness and low friction make these washers suitable for high-wear applications.
Formula: Al₂O₃
Thickness: 1.48mm
Outside Diameter: 18.59
Inside Diameter: 6.760
Quantity: 20 Pcs
Standard: ANSI B18.22M-1981, R1990 (Reg)
Size: M6 (ANSI)
CAS Number: 1344-28-1
UOM Code: 396-840-22
Thickness: 1.48mm
Outside Diameter: 18.59
Inside Diameter: 6.760
Quantity: 20 Pcs
Standard: ANSI B18.22M-1981, R1990 (Reg)
Size: M6 (ANSI)
CAS Number: 1344-28-1
UOM Code: 396-840-22
SKU: 1000024785
Product Code: AL60-WA-000106
Tolerances
Washer
| Size | See item |
|---|
Tolerances
Washer
| Size | See item |
|---|
POA
each
No Minimum order
Despatch of products in stock within 48 hours
Free technical support
*Free delivery worldwide
Material Properties for Ceramics
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good |
| Acids - dilute | Good |
| Alkalis | Good |
| Halogens | Good |
| Metals | Good |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant | 9-10.1 |
| Dielectric strength( kV mm⁻¹ ) | Oct-35 |
| Volume resistivity( Ohmcm ) | >10¹⁴@25 |
Physical Properties
| Element | Value |
|---|---|
| Apparent porosity( % ) | 0 |
| Water absorption - saturation( % ) | 0 |
| Density( gcm⁻³ ) | 3.9 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 2100 |
| Upper continuous use temperature( C ) | 1700 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 850-900@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 26-35@20°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 8@20-1000°C |
Mechanical Properties
| Element | Value |
|---|---|
| Tensile modulus( GPa ) | 300-400 |
| Hardness - Knoop( kgf mm⁻² ) | 2100 |
| Hardness - Vickers( kgf mm⁻² ) | 1500-1650 |
| Shear strength( MPa ) | 330 |
| Tensile strength( MPa ) | 260-300 |
Pultrusions
| Element | Value |
|---|---|
| Compressive strength( MPa ) | 2200-2600 |
Other Customers Purchased
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Alumina Washer Formula: Al₂O₃
Thickness: 1mm
Outside Diameter: 9.85
Inside Diameter: 5.40
Quantity: 10 Pcs
Standard: BS4320:1968
Size: M5 (BS4320)
CAS Number: 1344-28-1
UOM Code: 017-320-58
€183.12eachDiscounts applied for volume purchases -
Alumina Washer Formula: Al₂O₃
Thickness: 0.75mm
Outside Diameter: 5.85
Inside Diameter: 2.570
Quantity: 25 Pcs
Standard: ANSI B18.22M-1981, R1990 (Reg)
Size: M2 (ANSI)
CAS Number: 1344-28-1
UOM Code: 338-138-39
€340.08eachDiscounts applied for volume purchases -
Alumina Washer Formula: Al₂O₃
Thickness: 0.8mm
Outside Diameter: 8.85
Inside Diameter: 4.40
Quantity: 25 Pcs
Standard: BS4320:1968
Size: M4 (BS4320)
CAS Number: 1344-28-1
UOM Code: 040-880-88
€363.16eachDiscounts applied for volume purchases -
Alumina Washer Formula: Al₂O₃
Thickness: 0.75mm
Outside Diameter: 5.85
Inside Diameter: 2.570
Quantity: 10 Pcs
Standard: ANSI B18.22M-1981, R1990 (Reg)
Size: M2 (ANSI)
CAS Number: 1344-28-1
UOM Code: 025-369-61
€169.27eachDiscounts applied for volume purchases -
Alumina Washer Formula: Al₂O₃
Thickness: 0.75mm
Outside Diameter: 5.85
Inside Diameter: 2.570
Quantity: 20 Pcs
Standard: ANSI B18.22M-1981, R1990 (Reg)
Size: M2 (ANSI)
CAS Number: 1344-28-1
UOM Code: 369-730-89
POAeachDiscounts applied for volume purchases -
Alumina Washer Formula: Al₂O₃
Thickness: 0.75mm
Outside Diameter: 5.85
Inside Diameter: 2.570
Quantity: 1 Pcs
Standard: ANSI B18.22M-1981, R1990 (Reg)
Size: M2 (ANSI)
CAS Number: 1344-28-1
UOM Code: 367-325-43
POAeachDiscounts applied for volume purchases
