Introducing Sumika Super S300, an engineering plastic from Sumitomo Chemical Co., Ltd.

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Sumika Super S300

Outline of material

Sumika Super S300 is an engineering plastic with excellent sliding performance that combines PTFE with Sumika Super E101, a wholly aromatic polyester. It maintains PTFE's low wear coefficient, while offering significant improvements on PTFE's shortcomings, namely, lower wear resistance and compressive creep characteristics.

Characteristics

Sliding characteristics

  • Low friction coefficient and excellent stability
  • Low friction coefficient ensures highest PV limit among non-lubricated sliding materials
  • Does not easily scratch other materials when used with soft metals such as stainless steel or aluminum
  • Maintains reliable characteristics for a long time
  • Superior performance in water-lubricated applications

Heat resistant

  • Continuous service temperature of 260°C

Chemical resistant

  • Not affected by most organic solvents or oils, even at high temperatures

Sliding characteristics (When used with grade 304 stainless steel)
Property Wear coefficient K（mm/km）/（kg/cm2） Friction coefficient μ Stability of μ Damage to grade 304 stainless steel
S300 1.2×10-5 0.20 ○ ○
Pure PTFE 6000×10-5 0.18 × ○
Glass fiber/PTFE（20/80） 16.7×10-5 0.29 × ×
Graphite/PTFE(15/85) 308×10-5 0.19 ○ ○
Glass fiber/MoS2/PTFE(15/5/80) 25.7×10-5 0.26 △ △
Bronze/PTFE(30/70) 17.4×10-5 0.23 × △
Carbon fiber/PTFE(25/75) 24.3×10-5 0.24 × △

Conditions: Room temperature - Dry, Pressure = 6 kg/cm2, Velocity = 40 m/min, Measurement time = 7 hr, Finish of other material = Polished with #1200 sandpaper (Ra = 0.08 μm)

Sliding characteristics (When used with aluminum)
Property Wear coefficient K（mm/km）/（kg/cm2） Friction coefficient μ Stability of μ Aluminum wear（mg）
S300 1.5×10-5 0.21 ○ 0.1 or below
Glass fiber/PTFE（25/75） 2200×10-5 0.34 × 67.4
Carbon fiber/PTFE（25/75） 1200×10-5 0.23 × 50.7

Conditions:Room temperature - Dry, Pressure 10 kg/cm2, Velocity = 40 m/min, Measurement time: S300 = 20 hr, other grades = 2 hr, Aluminum = JIS-5052, Finish of other material = Polished with #1200 sandpaper (Ra = 0.8 μm)

Example uses

  • Sliding parts
  • Bearings
  • Bushes
  • Washers, and more...

  • Industrial machinery parts

  • Food manufacturing parts

Grades

  • S300

Table of physical properties

The properties indicated below are typical values, and are not guaranteed.

Property Unit S300 Glass fiber/PTFE(25/75)
Specific gravity － 1.84 2.24
Tensile strength Mpa 10.8 20.6
Elongation % 230 310
Hardness Durometer D 64 64
Compressive strength (10% strain) Mpa 22.2 18.0
Compressive modulus Mpa 981 941
Compressive creep（23°C, 140kg/cm2, 24hr) ％ 2.1 7.7
Permanent deformation (23°C, 140kg/cm2, 24hr) ％ 1.8 5.2
Coefficient of linear thermal expansion:Machine direction X10-5/℃ 12.9 12.0
Coefficient of linear thermal expansion:Transverse direction X10-5/℃ 8.3 7.7
Thermal conductivity cm/cm・K 9.5×10-4 7.2×10-4

Download table of physical properties (PDF)

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