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Plastic Balls

Balls - Micro balls

Plastic balls

Plastic balls are manufactured from standard and special polymer resins in sizes from 1mm to 180mm.

Plastic balls are a cost-effective substitute for steel balls for some applications. They are in aerosol spray cans, lightweight check valves, medical diagnostics, light bearings, drawing slides and a wide variety of other applications.

Tolerances to +/-0.0005″ (+/-0.0125mm). Surfaces can be tailored from rough to highly polished finishes.

Polyacetal (non filled material)

Polyacetal (non filled material)
 Physical Properties for plastic balls
 Specific Gravity1.41-1.42
 Water absorption, 1/8″ thick specimen, 24h saturation (%)0.20-0.40
 Dielectric strength, 1/8″ thick specimen, short time (kV/mm)60-70
 Mechanical Properties for plastic balls
 Tensile strength at break (MPa)2800-3600
 Elongation at break (%)25-75
 Tensile yield strength (Mpa)62-84
 Tensile modulus (MPa)2800-3600
 Compressive strength (rupture or yield) (MPa)124 (10%)
 Compressive modulus (MPa)4620
 Flexural strength (rupture or yield) (MPa)90-98
 Flexural modulus(MPa)2620-2960
 lzod impact. (J/m).of notched54-122
 Hardness RockwellM78-M94
 Thermal properties for plastic balls
 Coef. of linear thermal expansion (K-1)11 x 10-5
 Deflection temperature Flexural load oF @1.85MPa (°C)106-114
 @0.46MPa (°C)150-170
 Thermal conductivity Wm-1K-10.8-1.1
 Maximal temperature of use without strength (°C)90-110

Polyamide (PA 6.6)

Polyamide (PA 6.6)
 Physical Properties for plastic balls
 Specific Gravity1.13-1.15
 Water absorption, 24h saturation (%)2.8
 Dielectric strength, short time (KV/mm)24
 Mechanical Properties for plastic balls
 Tensile strength at break (MPa)85
 Tensile modulus (MPa)3450
 Elongation at break (%)45
 Flexural modulus(MPai)3200
Shock impact (Charpy) KJ / m23
 Hardness RockwellR120
 Thermal properties for plastic balls
 Coef. of linear thermal expansion  (K-1)8-9.5 x 10-5
 Deflection temperature Flexural load oF @1.8MPa (°C)70
 @0.45MPa (°C)245
 Maximal temperature of use without strength (°C)110

Polyethylene High Density

Polyethylene High Density
 Physical Properties for plastic balls
 Specific Gravity0.941-0.965
 Dielectric strength,  (KV/mm)150
 Mechanical Properties for plastic balls
 Tensile strength at break (MPai)17-31
 Elongation at break (%)400-1000
 Tensile yield strength (MPa)27-28
 Flexural modulus(MPa)1250
Shock impact (Charpy) KJ/m24
 Hardness ShoreD67
 Thermal properties
 Deflection temperature Flexural load oF @1.045MPa (°C)95

Polyamide (Nylon 66)

Polyamide (Nylon 66)
Physical Properties
Specific Gravity1.13-1.15
Water absorption, 1/8″ thick specimen, 24h saturation (%)1.0-1.3
Dielectric strength, 1/8″ thick specimen, short time (V/mil)600b
Mechanical Properties
Tensile strength at break (psi)12.000b 11.000c
Elongation at break (%)60b 300c
Tensile yield strength (psi)8000b 6500c
Compressive strength (rupture or yield) (psi)15.000b(yld.)
Flexural strength (rupture or yield) (psi)17.000b 6100c
Tensile modulus (103 psi)/
Compressive modulus (103 psi)/
Flexural modulus(103 psi)420b 185c
lzod impact. Ft-lb/.in.of notch (1/8″ thick specimen)0.8-1.0b 2.1c
Hardness Rockwell/ShoreR120b M83b
Thermal properties
Coef. of linear thermal expansion (106in./in/oC)80
Deflection temperature Flexural load oF @264psi167b
@66psi474b
Thermal conductivity 10-cal.-cm/sec-cm2-oC5.8

PTFE

PTFE
 Physical Properties for plastic balls
 Specific Gravity2.14-2.20
 Dielectric strength, 1mm thick specimen  (KV/mm)36
 Mechanical Properties for plastic balls
 Elongation at break (%)300-400
 Compressive strength (MPa)7-8
 Tensile modulus (MPa)750
 Flexural modulus(MPa)600-1000
 lzod impact.J/m of notched350-500
 Hardness ShoreD50-60
 Thermal properties
 Coef. of linear thermal expansion (K-1)13 x 10-5
 Deflection temperature Flexural load oF @1.82MPa (°C)50-60
 @0.45MPa (°C)130-140
 Thermal conductivity W/m-1/K-10.25
Friction coefficient0.05-0.08

Phenolic resin

Phenolic resin
 Physical Properties for plastic balls
 Specific Gravity1.32-1.87
 Water absorption, 1/8″ thick specimen, 24h saturation (%)0.1-0.6
 Mechanical Properties for plastic balls
 Compressive strength (max stress) (MPa)43
 Compressive modulus(MPa)3900
 Shock impact (Charpy) (Kj/m2)10-15
 Hardness RockwellH50-90
 Thermal properties
 Coef. of linear thermal expansion  (K-1)7-12 10-5
 Deflection temperature Flexural load oF @1.8MPa88
 @0.45MPa96

GRADE

GRADE
0IIIIII
InchesmmInchesmmInchesmmInchesmm
Sphericity0.00050.01250.00050.01250.0010.0250.0050.125
Tolerance+/-0.00050.0125+/-0.0010.025+/-0.0020.050+/-0.0050.125
SurfacePolishedPolishedUnpolished