Reference Tables

As the world's leading supplier of plastics, Alfa Chemistry not only provides customers with plastic products and related services, but also provides customers with convenience. To help you find the information you need quickly and easily, we have carefully created the following reference tables.

Common Plastic Abbreviations

• Abbreviation: Generic Name
• ABS: Acrylonitrile butadiene styrene
• CPVC: Chlorinated Polyvinyl Chloride
• ETFE: Ethylene tetrafluoroethylene
• HDPE: High Density Polyethylene
• LDPE: Low Density Polyethylene
• PA: Polyamide (Nylon)
• PC: Polycarbonate
• PE: Polyethylene
• PEEK: Polyetheretherketone
• PEI: Polyetherimide
• PET: Polyethylene Terephalicate
• PFA: Perfluoroalkoxy
• PI: Polyimide
• PMMA: Polymethyl Methacrylate
• POM: Polyoxymethylene
• PP: Polypropylene
• PS: Polystyrene
• PVC: Polyvinyl Chloride
• PVDF: Polyvinylidene Fluoride
• PLA: Polylactic Acid
• TPU: Thermoplastic Polyurethane

Conversion Factors-Imperial/Metric

• To Convert: Multiply By
• Inches to Millimeters: 25.400
• Millimeters to Inches: 0.0393701

Inches to Millimeters Conversion Table

• Inch (") Fraction: Inch (") Decimal; Millimeter (mm)
• 1/32: 0.03125; 0.794
• 1/16: 0.0625; 1.588
• 3/32: 0.09375; 2.381
• 1/8: 0.125; 3.175
• 5/32: 0.15625; 3.969
• 3/16: 0.1875; 4.763
• 7/32: 0.21875; 5.556
• 1/4: 0.25; 6.350
• 9/32: 0.28125; 7.144
• 5/16: 0.3125; 7.938
• 11/32: 0.34375; 8.731
• 3/8: 0.375; 9.525
• 13/32: 0.40625; 10.319
• 7/16: 0.4375; 11.113
• 15/32: 0.46875; 11.906
• 1/2: 0.5; 12.700
• 17/32: 0.53125; 13.494
• 9/16: 0.5625; 14.288
• 19/32: 0.59375; 15.081
• 5/8: 0.625; 15.875
• 21/32: 0.65625; 16.669
• 11/16: 0.6875; 17.463
• 23/32: 0.71875; 18.256
• 3/4: 0.75; 19.050
• 25/32: 0.78125; 19.844
• 13/16: 0.8125; 20.638
• 27/32: 0.84375; 21.431
• 7/8: 0.875; 22.225
• 29/32: 0.90625; 23.019
• 15/16: 0.9375; 23.813
• 31/32: 0.96875; 24.606
• 1: 1; 25.400

Millimeters to Inches Conversion Table

• Millimeter (mm): Inch (") Decimal; Inch (") Fraction
• 0.01: 0.0004; 0
• 0.1: 0.0039; 0
• 1: 0.0394; 3/64
• 2: 0.0787; 5/64
• 3: 0.1181; 1/8
• 4: 0.1575; 5/32
• 5: 0.1969; 13/64
• 6: 0.2362; 15/64
• 7: 0.2756; 9/32
• 8: 0.3150; 5/16
• 9: 0.3543; 23/64
• 10: 0.3937; 25/64
• 20: 0.7874; 25/32
• 30: 1.1811; 1 3/16
• 40: 1.5784; 1 37/64
• 50: 1.9685; 1 31/32
• 60: 2.3622; 2 23/64
• 70: 2.7559; 2 3/4
• 80: 3.1496; 3 5/32
• 90: 3.5433; 3 35/64
• 100: 3.9370; 3 15/16

Mesh to Micron Conversion Table

• U.S. mesh: Inch (") Decimal; Micron (μm); Millimeter (mm)
• 3: 0.2650; 6730; 6.730
• 4: 0.1870; 4760; 4.760
• 5: 0.1570; 4000; 4.000
• 6: 0.1320; 3360; 3.360
• 7: 0.1110; 2830; 2.830
• 8: 0.0937; 2380; 2.380
• 10: 0.0787; 2000; 2.000
• 12: 0.0661; 1680; 1.680
• 14: 0.0555; 1410; 1.410
• 16: 0.0469; 1190; 1.190
• 18: 0.0394; 1000; 1.000
• 20: 0.0331; 841; 0.841
• 25: 0.0280; 707; 0.707
• 30: 0.0232; 595; 0.595
• 35: 0.0197; 500; 0.500
• 40: 0.0165; 400; 0.400
• 45: 0.0138; 354; 0.354
• 50: 0.0117; 297; 0.297
• 60: 0.0098; 250; 0.250
• 70: 0.0083; 210; 0.210
• 80: 0.0070; 177; 0.177
• 100: 0.0059; 149; 0.149
• 120: 0.0049; 125; 0.125
• 140: 0.0041; 105; 0.105
• 170: 0.0035; 88; 0.088
• 200: 0.0029; 74; 0.074
• 230: 0.0024; 63; 0.063
• 270: 0.0021; 53; 0.053
• 325: 0.0017; 44; 0.044
• 400: 0.0015; 37; 0.037
• 625: 0.0008; 20; 0.020
• 1250: 0.0004; 10; 0.010
• 2500: 0.0002; 5; 0.005
• 5000: 0.0001; 2.5; 0.0025
• 15000: 0.00004; 1; 0.001

*In the table above, these values are generally accepted as accurate but are approximates, because when the mesh count is constant and the wire diameter changes, the aperture will change accordingly.