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Norplex-Micarta MC223

Chemical Family
Phenols & Phenolics

Grade MC223 is a medium weave cotton phenolic composite. Typical applications include pintle and stave-type bearings for rudder shafts in the marine industry. This material is known industry wide as “Marine Micarta.” This product is also suitable for heavy equipment applications that require finer machining profiles than those provided by bearing-grade laminates.

Properties

Physical Form
Sheets

Product families

Industrial — Chemical & Industrial Manufacturing
  • Equipment & Parts
Automotive & Transportation — Transportation
  • Marine

Other characteristics

Density
1440.0 - 1440.0 kg/m³
Features
Bearing Grade
Polymer Name
Phenolic Compound
Reinforcement Material
Cotton
Note

This 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 0.125 inch; *t₂= Thickness tested at 0.500 inch

Markets
  • Automotive & Transportation
  • Industrial
Technology
  • Composite Materials
  • Plastics
Fillers Included
Cotton
Product Families
  • Composite Materials — Parts & Shapes
  • Plastics — Parts, Shapes & Films
Quality Standards
MIL-P-18324D
Composites End Use
  • Marine Applications
  • Rudder Shaft
Material Features
Bearing Grade

Technical data

Table 1 of 2

11 rows
CharacteristicValueUnitMethod
Bonding Strength (Condition A, *t₂)771.1kgASTM D229
Compressive Strength (Condition A, Flatwise, *t₁)262MpaASTM D695
Flexural Strength (Conditon A, Lengthwise, *t₁)124.1MpaASTM D790
Izod Impact Strength (Condition E-48/50, Crosswise, *t₂)0.64J/cmASTM D256
Izod Impact Strength (Condition E-48/50, Lengthwise,*t₂)1.07J/cmASTM D256
Moisture Absorption (Condition A, *t₁)1.2%ASTM D570
Rockwell Hardness (0.250" Build-up, *t₁)105M ScaleASTM D785
Rockwell Hardness (0.250" Build-up, *t₂)105M ScaleASTM D785
Shear Strength (Condition A, Perpendicular, *t₁)89.6MpaASTM D732
Specific Gravity (*t₂)1.44—ASTM D792
Tensile Strength (Conditon A, Lengthwise, *t₁)82.7MpaASTM D638

Table 2 of 2

2 rows
CharacteristicValueUnitMethod
Flammability Vertical (Condition A, *t₁)HBClassUL Bulletin 94
Temperature Index¹ (Mechanical, *t₁, *t₂)125°CUL Bulletin 746b

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