HEAT INSULATION SHEETS

Characteristics comparison of MISUMI insulation sheets

Appropriate value
Material grades Standard Heat proof High strength High
temperature proof
Bakelite
(JIS PL-PEM)
Bakelite
(JIS PL-FLE)
Standard Thickness high precision Standard Thickness high precision
Standard
type
HIP HIPH HIPX - - - HIPP HIPC
A/B dimension
designation type
HIPS HIPHS HIPXS HIPXTS HIPLS HIPGTS HIPPS HIPCS
Bolt hole
type
HIPS-4H,6H HIPHS-4H,6H HIPXS-4H,6H HIPXTS-4H,6H HIPLS-4H,6H HIPGTS-4H,6H HIPPS-4H,6H HIPCS-4H,6H
Boring
type
HIP-□□□□ HIPH-□□□□ HIPX-□□□□ HIPXT-□□□□ HIPL-□□□□ HIPGT-□□□□ HIPP-□□□□ HIPC-□□□□
Heat resistance 5 9 4 9 3 3
Insulation
Efficiency
5 2 6 7 9 8
Bending
strength
5 3 10 6 - -
Compressive
strength
5 3 10 8 6 5
Charpy
impact value
5 4 10 9 5 6
Workability 5 5 3 5 9 9
Cost benefit 5 8 3 2 10 9
Destruction
temperature
(note 1)
400°C 700°C 300°C 500°C 180°C 180°C
Recommended
temperature
(note 2)
220°C
or lower
500°C
or lower
180°C
or lower
400°C
or lower
100°C
or lower
100°C
or lower
(note 1)"Destruction temperature"indicates a point where carbonizing, rupture, melting starts. Be sure to use at a temperature below recommended temperature.
(note 2)"Recommended temperature"indicates temperature at which no sudden quality drop occurs when it is used for a long term.

Physical properties of the material

Material grades Standard Heat proof High strength
Items Unit HIP□ HIPH□ HIPX□
General
characteristics
Specific gravity - 2.0~2.2 2.0~2.2 1.8
Water absorption % 2~5 4~6 0.03
Electrical
characteristics
*Volume resistivity Ω-cm 4h/150°C 2.0×1014 1.0×1012 2.0×1015
100h/
25°C/ 90%RH
3.0×109 1.0×107 1.0×1014
Flatwise breakage voltage kV/mm 5~7 3 27
Surface resistance Ω - - 2.0×1015
Mechanical
characteristics
Bending strength (SI unit)MPa 98~147 44~54 400~500
kgf/cm2 1000~1500 450~550 4000~5000
Compressive strength (SI unit)MPa 147~294 117~147 500~580
kgf/cm2 1500~3000 1200~1500 5000~5800
Charpy
impact
value
(SI unit)J/cm2 1.4~1.5 1.0~1.1 9~10
kgf·cm/cm2 14~15 10~11 90~100
Thermal
characteristics
Expansion coefficient I/°C 6.6×10-6 9.0×10-6 1.6×10-4
Thermal
conductivity
coefficient
(SI unit)W/m·K 0.71 1.21 0.59
cal/cm·sec·°C 1.7×10-3 2.9×10-3 1.4×10-3
kcal/h·m·°C 0.61 1.04 0.50
Specific heart (SI unit)J/g·K 1.08 0.92 1.15
cal/g·°C 0.26 0.22 0.28
Arc resistance sec 180 240 180
Principal
components
Main binder - Inorganic material
(Borate type binder)
Inorganic material
(Phosphatic type binder)
Organic material
(Super heat proof epoxy resin)
Base material - Glass fiber Glass fiber Glass fiber

Material grades High temperature proof* Bakelite
(JIS PL-PEM)
Bakelite
(JIS PL-FLE)
Items Unit HIPL□ HIPG□ HIPP□ HIPC□
General
characteristics
Specific gravity - 1.95~2.05 2.0~2.1 1.4 1.4
Water absorption % 0.05~0.06 0.1 0.5~0.6 0.9~1.4
Electrical
characteristics
*Volume resistivity Ω-cm 4h/150°C 5.7×1016 1.0×1015 3.0×109 4.0×108
100h/
25°C/ 90%RH
8.2×1015 1.0×1013 9.0×108 5.0×107
Flatwise breakage voltage kV/mm 9~10 - 24~30 13~20
Surface resistance Ω 3.0×1016 - 5.0×1010 9.0×108
Mechanical
characteristics
Bending strength (SI unit)MPa 147 120~130 - -
kgf/cm2 1400
~
1500
1200
~
1300
- -
Compressive strength (SI unit)MPa 440~461 420~480 294~392 245~294
kgf/cm2 4500
~
4700
4200
~
4800
3000
~
4000
2500
~
3000
Charpy impact
value
(SI unit)J/cm2 6.0 2.5 1.88 2.10
kgf·cm/cm2 61.7 25.5 18.9 21.2
Thermal
characteristics
Expansion coefficient I/°C 2.6×10-5 2.3×10-5 1.6×10-4 0.6×10-4
Thermal
conductivity
coefficient
(SI unit)W/m·K 0.24 0.3 0.21 0.38
cal/cm·sec·°C 0.58×10-3 0.7×10-3 0.5×10-3 0.9×10-3
kcal/h·m·°C 0.21 0.26 0.18 0.32
Specific heart (SI unit)J/g·K 0.99 0.90 1.60 1.30
cal/g·°C 0.24 0.22 0.38 0.31
Arc resistance sec 345 - - -
Principal
components
Main binder - Inorganic material
(Silica type binder)
Inorganic material
(Silica type binder)
Organic material
(Phenol resin)
Organic material
(Phenol resin)
Base material - Glass fiber Glass fiber Craft paper Cotton cloth
Note:Shown are examples of measurement values and are not guaranteed values.
* Volume resistivity:top row values are measured after 4h/150°C, bottom row values under room temperature after 100h/25°C/90%RH.
* Upon use, make sure to check the temperature characteristics of mechanical strength(see the charts on)PDF (121KB)
* High temperature proof sheets include two products made by different manufacturers.
* For Material Safety Data Sheet (MSDS), please visit our homepage. (http://jp.misumi-ec.com/tech/msds/)

Method and Notes for machining Insulation sheet


When machining, be sure to suck up dust into a dust collector so that it may not scatter. Safety measures for usual works in dust, such as masks and goggles, are required as the insulation sheets contain glass fiber which may affect the skin such as itching. When dust attaches to the machine, its accuracy may diminish.
Drilling holes in the insulation sheet may cause cracks. Attention needs to be taken to hole pitches, diameters, and etc.
These insulation sheets are lamination-formed products, and not suitable for tapping and 3-dimensional machining.

Machining Conditions
  Lathe turning Milling Drilling
Tools Carbide
(K-10)
Carbide
(K-10)
Carbide
(K-10)
Cutting speed
V(m/min)
Blade:
Large~Small
45~200
Blade:
Large~Small
100~300
Blade:
Large~Small
120~350
Revolution
(rpm)
Blade:
Large~Small
50~1000
Blade:
Large~Small
300~1000
φ2 gimlet 1000~1500
φ5 gimlet 500~1000
Cutting depth
(mm)
0.5~0.3 0.5~2.0 -
Feed
(mm/revolution)
0.1~0.2 0.1~0.2 0.1~0.5
The above values are for reference only.

Note on handling

The insulation sheet may break when the bolt is tightened too hard.
Do not use in areas where water, chemical or any liquids may come in. Insulation sheets that has absorbed water can be easily cracked, and cause significant degradation in their performance by increasing temperature.
When using the insulation sheets(Heat proof)at 300°Cor more, there may be some smoke or odor at first, but does not affect the product quality.
Refer to PDF (121KB) for property charts(durability data)on insulation sheets.
Material Safety Data Sheet (MSDS) is published on our homepage.
(http://jp.misumi-ec.com/tech/msds/)

Example


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