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Norplex-Micarta MC320LE

Grade MC320LE is a fine weave bleached cotton phenolic composite that has excellent machining characteristics and low moisture absorption. Applications include marine applications, terminal boards and parts requiring medium strength and excellent electrical characteristics. MC320LE meets or exceeds the requirements of MIL-I-24768/13 and ASMT F2953-12 Type FB. Certification to IEC standard is pending.

Polymer Name: Phenolic Compound

Reinforcement Material: Cotton

Physical Form: Sheets

Density: 1380.0 - 1380.0 kg/m³

Features: Bearing Grade, Good Electrical Properties, Good Machinability, Low Moisture Absorption, Medium Strength, Wear Resistant

Technical Data SheetSafety Data Sheet
  • TypeDocument Name
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Phenols & Phenolics

Fillers Included

Cotton

Polymer Name

Phenolic Compound

Reinforcement Material

Cotton

Technologies

Composite Materials,

Plastics

Product Families

Composite Materials — Parts & Shapes

Plastics — Parts, Shapes & Films

Features & Benefits

Materials Features

Bearing Grade,

Good Electrical Properties,

Good Machinability,

Low Moisture Absorption,

Medium Strength,

Wear Resistant

Applications & Uses

Markets

Automotive & Transportation,

Electrical & Electronics,

Industrial

Applications

Industrial — Chemical & Industrial Manufacturing

Equipment & Parts

Electrical & Electronics — Parts & Components

Terminal Blocks, Plugs & Sockets

Automotive & Transportation — Transportation

Marine

Composites End Use

Marine Applications,

Terminal Blocks

Properties

Physical Form

Sheets

Physical Properties
ValueUnitsTest Method / Conditions
Bonding Strength (Condition A, *t₃)771.1kgASTM D229
Compressive Strength (Condition A, Flatwise, *t₂)262MpaASTM D695
Flexural Strength (Conditon A, Lengthwise, *t₂)165.5MpaASTM D790
Izod Impact Strength (Condition E-48/50, Crosswise, *t₃)0.91J/cmASTM D256
Izod Impact Strength (Condition E-48/50, Lengthwise,*t₃)1.07J/cmASTM D256
Moisture Absorption (Condition A, *t₂)0.87%ASTM D570
Rockwell Hardness (0.250" Build-up, *t₁)102M ScaleASTM D785
Rockwell Hardness (0.250" Build-up, *t₂)102M ScaleASTM D785
Shear Strength (Condition A, Perpendicular, *t₂)96.5MpaASTM D732
Specific Gravity (*t₃)1.38—ASTM D792
Tensile Strength (Conditon A, Lengthwise, *t₂)129.6MpaASTM D638
Thermal Properties
ValueUnitsTest Method / Conditions
Flammability Rating (Condition A, *t₁)V-0ClassUL Bulletin 94
Temperature Index¹ (Electrical, *t₁, *t₂, *t₃)115°CUL Bulletin 746b
Temperature Index¹ (Mechanical, *t₁, *t₂, *t₃)125°CUL Bulletin 746b
Electrical Properties
ValueUnitsTest Method / Conditions
Arc Resistance (Condition A, *t₂)130sASTM D495
Breakdown Voltage (Condition A, *t₁)70 x10³VASTM D149
Dissipation Factor (Condition A, at 1 MHz, *t₁)0.044——
Relative Permittivity (Condition A, at 1 MHz, *t₁)5.3——
Note
  • 1This temperature is a recommendation only, and based upon experience in various applications. The maximum operating temperature is dependent upon the application and should be investigated prior to use.
  • *t₁= Thickness tested at 0.0625 inch
  • *t₂= Thickness tested at 0.125 inch
  • *t₃= Thickness tested at 0.500 inch

Regulatory & Compliance

Quality Standards

ASTM F2953-12,

IEC PF CC 204,

MIL-I-24768/13 Type FBE,

NEMA LE