Fiberglass Specifications

Marco Fiberglass Specifications include these important resources: Chemical Resistance Guide, Load Information and Resin Selection Guide.

Resin Selection Guide

Resin TypeDescriptionResin BaseCorrosion ResistanceFlame Spread
Rating ASTM E84
ProductStandard ColorsMax. Temp.
Type PLow Smoke and Superior
Fire Resistance
PhenolicVery GoodClass 1, 5 or LessMolded & PultrudedReddish-Brown300° F
Type VSuperior Corrosion Resistance
and Fire Retardant
Vinyl EsterExcellentClass 1, 25 or LessMolded & PultrudedDark Grey,
Yellow Orange
200° F
Type IIndustrial Grade Corrosion
Resistance and Fire Retardant
Isophthalic PolyesterVery GoodClass 1, 25 or LessMolded & PultrudedGreen, Yellow,
Light Grey
150° F
Type FFood Grade Corrosion
Resistance and Fire Retardant
Isophthalic PolyesterVery GoodClass 1, 25 or LessMoldedLight Grey150° F
Type OModerate Corrosion Resistance
and Fire Retardant
General Purpose OrthoModerateClass 1, 25 or LessMoldedGreen, Light Grey,
Dark Grey
150° F
⇒ Printable Resin Selection Guide

 Load Information

Marco_fiberglass_Load Table

  1. These tables were developed in accordance with the test method developed by the Fiberglass Grating Manufacturers Council (FGMC) of the American Composites Manufacturers Association (ACMA) for the Fiberglass Grating Standard.
  2. The designer should not exceed MAXIMUM RECOMMENDED load at any time. MAXIMUM LOAD represents a factor of safety of 4:1 for molded grating and 2:1 for pultruded grating on ULTIMATE CAPACITY. ULTIMATE CAPACITY represents MAX LOAD observed at initial fracture.
  3. Walking loads for maintenance traffic are typically a live load of 50 PSF. Deflections for worker comfort are typically limited to 0.375” (3/8”) or SPAN divided by 120 under full live load. For a firmer feel under full live load or a line load 250 lbs/ft of width, limit deflections to 0.25” (1/4”) or SPAN divided by 200.
  4. The loads represented are for STATIC LOAD CONDITIONS at ambient temperature. Deflections for impact loads or dynamic loads will MULTIPLY the deflections shown by 2. Long term loads will result in added deflection due to creep in the material and will require higher factors of safety to ensure acceptable performance.
  5. Deflections are limited to 0.5” (1/2”) as recommended by the Fiberglass Grating Manufacturers Council of the American Composites Manufacturers Association.
⇒ Printable Load Information

Chemical Resistance Guide

   Molded GratingPultruded Grating
Chemical Environment%ConcentrationTemp
0F
VFRIFRGPVFRIFR
Acetic Acid50MAXCCSCC
Acetic Acid25MAXCCSCC
Aluminum HydroxideALLMAXCCCCC
Ammonium Bicarbonate50120CCSSI
Ammonium Bicarbonate15120CCSCS
Ammonium ChlorideALL120CCCCC
Ammonium Sulfate2080SNNIN
Benzene100150IININ
Benzoic Acid (SAT)SATMAXCCSCC
Borax (SAT)SATMAXCCSCS
Calcium CarbonateALLMAXCCSCC
Calcium NitrateALLMAXCCCCC
Carbon Tetrachloride10080INNIN
Chlorine Water (SAT)SAT120CININ
Chlorine, Dry Gas*ALLMAXCCSCS
Chromic Acid50150INNIN
Citric AcidALLMAXCCCCC
Copper ChlorideALLMAXCCCCC
Copper CyanideALL140CSISI
Copper NitrateALLMAXCCCCC
Ethanol50120CIICI
Ethanol10120CSSCS
Ethylene GlycolALLISOCCSCS
Ferric Chloride100MAXCCCCC
Ferrous ChlorideALLMAXCCCCC
Formaldehyde 0-50%50120SIISI
GasolineALL120CCSCS
GlucoseALL120CCCCC
Glycerin100MAXCCSCS
Hydrobromic Acid50MAXSSIIN
Hydrochloric Acid37MAXISIII
Hydrochloric Acid10MAXCSSSS
Hydrogen Peroxide3080CNNSN
Lactic Acid100MAXCCCCC
Lithium Chloride (SAT)SATMAXNNNNN
Magnesium ChlorideALLMAXCCCCC
Magnesium NitrateALLMAXCCCCC
Magnesium SulfateALLMAXCCCCC
Mercuric ChlorideALLMAXCCCCC
Mercurous ChlorideALLMAXCCSCS
Nickel ChlorideALLMAXCCCCC
Nickel SulfateALLMAXCCCCC
Nitric Acid20120SSIII
Oxalic AcidALL150CCSCS
Perchloric Acid3090SIIII
Phosphoric Acid80MAXCCCCC
Potassium ChlorideALLMAXCCCCC
Potassium DichromateALLMAXCCCCC
Potassium NitrateALLMAXCCCCC
Potassium SulfateALLMAXCCCCC
Propylene GlycolALLMAXCCSCS
Sodium AcetateALLMAXCCCCC
Sodium BisulfateALL80SSICI
Sodium BromideALL80CCCCC
Sodium CyanideALL80CIISI
Sodium Hydroxide10MAXCININ
Sodium Hydroxide50MAXSNNNN
Sodium NitrateALLMAXCCCCC
Sodium SulfateALLMAXCCCCC
Sulfuric Acid10MAXCSSCS
Sulfuric Acid25MAXCSSSI
Sulfuric Acid75100CIIIN
Tartaric AcidALLMAXCCSCS
VinegarALLMAXCCSCS
Water, DistilledALLMAXCCCCC
Zinc Nitrate100MAXCCCCC
Zinc Sulfate100MAXCCCCC

⇒ Printable Chemical Resistance Guide

Contact a Marco Fiberglass representative for more specs & information here 800-200-3047.

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