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Mar-Con® 551 Acrylic (Forming Grade)

Chemical Family
Methacrylates

Mar-Con® 551 Acrylic (Forming Grade) is an abrasion resistant plastic sheet product designed for a variety of high performance end uses in which the sheet will be heat formed or bent into soft radius shapes. It is a premium quality acrylic sheet, coated with Scicron’s Mar-Con 551 advanced technology cross-linked coating. This coating has excellent resistance to a wide variety of chemicals and solvents and is more abrasion resistant than the acrylic plastic substrate. This combination of properties provides enhanced resistance to hazing, marring, and abrasion, of the sheet surfaces from cleaning, handling, and defacement efforts. Mar-Con® 551 Acrylic - Forming Grade also exhibits excellent optical properties and fabrication characteristics. This product can be used in many more applications than would be practical for an uncoated acrylic sheet.

Properties

Physical Form
Sheets

Product families

Industrial — Chemical & Industrial Manufacturing
  • Equipment & Parts

Other characteristics

Brand
Mar-Con
Color
  • Opaque, Transparent, White
  • Opaque
  • Transparent
  • White
Density
1190.0 - 1190.0 kg/m³
Features

Abrasion Resistant, Chemical Resistant, Cleanable, Durable, Excellent Solvent Resistance, Flame Resistant, Flexible, Good Optical Properties, Good Scratch Resistance, Good Smoothness, Graffiti Resistant, High Clarity, High Gloss, High Impact Resistance, High Performance, Impact Modified, Mar Resistant

Polymer Name
Polymethyl Methacrylate (PMMA)
Tensile Modulus
2756.0 - 2756.0 MPa
Markets
Industrial
Cleaning

The Forming Grade Mar-Con 551 coated surface can be cleaned with a variety of common cleaners (see reverse side for specific recommendations). Care should be taken to avoid the use of any cleaner or cleaning solution which contains an abrasive. In addition, all wipes, sponges, and drying towels should be clean and free of any grit which could damage the surface.

Fabrication

Mar-Con® 551 Acrylic - Forming Grade is easily fabricated into a variety of flat and bent surface configurations using the same equipment employed with uncoated acrylic sheet products. The product is designed to accommodate drape forming and heat bending, however, care must be taken to avoid applying too much heat to prevent damage to the abrasion resistant coating. Soft radii shapes and bends can be achieved which are smooth, clear, and uniform, if recommended forming techniques are employed. Some distortion and loss of abrasion resistance in a bend area is normal. On tight bends, particularly in thicker materials, there may be some very fine haze lines in the bend area. When solvent welding, it is necessary to remove the Mar-Con 551 coated surface mechanically to achieve a good bond.

Technology
Plastics
Labeling Claims

Not Hazardous under OSHA Hazard Communication Standard

Product Families
Plastics — Parts, Shapes & Films
Additives Included
Impact Modifier
Material Features
  • Abrasion Resistant
  • Chemical Resistant
  • Cleanable
  • Durable
  • Excellent Solvent Resistance
  • Flame Resistant
  • Flexible
  • Good Optical Properties
Benefits and Features

Flexible, abrasion resistant, durable surface - The Forming Grade Mar-Con 551 coated surface, more abrasion resistant than the base plastic, reduces risk of damage to the sheet surfaces from frequent cleaning and handling.; Superior chemical and solvent resistance - Reduces risk of solvent or chemical damage to the sheet surfaces.; Excellent optical properties - High clarity, high gloss coating maintains optimum light transmission without distortion.; Advanced technology, uniform surface treatment - Provides enhanced abrasion and chemical resistance without changing the appearance of the acrylic surfaces.; Graffiti resistance - Easy to clean hydrophobic surface; Superior fabrication and bending characteristics - Results in optimum heat forming during part fabrication

Technical data

Table 1 of 5

7 rows
CharacteristicValueUnitMethod
Compressive Strength18000.0psiASTM D695
Flexural Modulus475000.0psiASTM D790
Flexural Strength16500.0psiASTM D790
Izod Impact Strength (milled notch)0.4ft-lb/inchASTM D256
Tensile Modulus400000.0psiASTM D638
Tensile Strength Elongation4.2%ASTM D638
Tensile Strength Ultimate10000.0psiASTM D638

Table 2 of 5

3 rows
CharacteristicValueUnitMethod
Specific Gravity1.19—ASTM D792
Taber Abrasion1 - ∆ Hazemax. 8%ASTM D1044
Weighted Steel Wool Rub Resistance2Light Scratches—Internal

Table 3 of 5

5 rows
CharacteristicValueUnitMethod
Coefficient of Thermal Conductivity1.3BTU.in/hr.ft2.°FCenco-Fitch
Coefficient of Thermal Expansion3.8 x 10^-5in/in/°FASTM D696
Deflection Temperature (264 psi load)210.0°FASTM D648
Maximum Continuous Service Temperature180.0°F—
Vicat Softening Point239.0°FASTM D1525

Table 4 of 5

2 rows
CharacteristicValueUnitMethod
Hazemax. 1.0%ASTM D1003
Transmittance, 3mm Transparent Clear - Total92.0%ASTM D1003

Table 5 of 5

2 rows
CharacteristicValueUnitMethod
Horizontal Burn (Flame Spread)1.1in/minASTM D635
UL 94 Rating of the Uncoated SubstrateHB—UL 94

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