Durability

Fatigue endurance

Figure 5-1: Flexural fatigue properties

Figure 5-1: Flexural fatigue properties

Creep rupture properties

Figure 5-2: Creep rupture properties

Figure 5-2: Creep rupture properties

Creep properties

  • Figure 5-3: Tensile creep properties

    Figure 5-3: Tensile creep properties

  • Figure 5-4: Tensile creep properties

    Figure 5-4: Tensile creep properties

  • Figure 5-5: Tensile creep properties

    Figure 5-5: Tensile creep properties

  • Figure 5-6: Tensile creep properties

    Figure 5-6: Tensile creep properties

  • Figure 5-7: Change in creep elasticity as a function of temperature

    Figure 5-7: Change in creep elasticity as a function of temperature

  • Figure 5-8: Change in creep elasticity as a function of temperature

    Figure 5-8: Change in creep elasticity as a function of temperature

  • Figure 5-9: Stress-time-strain curve Figure 5-9: Stress-time-strain curve
  • Figure 5-10: Flexural creep properties Figure 5-10: Flexural creep properties
  • Figure 5-11: Flexural creep properties

    Figure 5-11: Flexural creep properties

  • Figure 5-12: Compressive creep properties (for reference)

    Figure 5-12: Compressive creep properties
    (for reference)

  • Figure 5-13: Compressive creep properties (for reference)

    Figure 5-13: Compressive creep properties
    (for reference)

Heat resistance

  • Figure 5-14: Change in tensile strength resulting from thermal degradation Figure 5-14: Change in tensile strength resulting from thermal degradation
  • Figure 5-15: Change in impact strength resulting from thermal degradation Figure 5-15: Change in impact strength resulting from thermal degradation
  • Figure 5-16: Heat life curve

    Figure 5-16: Heat life curve

Heat shock resistance

Figure 5-17: Change in tensile strength resulting from heat shock

Figure 5-17: Change in tensile strength resulting from heat shock

Weatherability

  • Figure 5-18: Change in tensile strength under weather-meter irradiation Figure 5-18: Change in tensile strength under weather-meter irradiation
  • Figure 5-19: Change in flexural strength under weather meter irradiation Figure 5-19: Change in flexural strength under weather meter irradiation
  • Figure 5-20: Change in impact strength under weather meter irradiation Figure 5-20: Change in impact strength under weather meter irradiation
  • Figure 5-21: Change in tensile strength under exposure to the outdoors Figure 5-21: Change in tensile strength under exposure to the outdoors
  • Figure 5-22: Change in impact strength under exposure to the outdoors

    Figure 5-22: Change in impact strength under exposure to the outdoors

Ozone resistance

Figure 5-23: Change in properties resulting from ozone exposure

Figure 5-23: Change in properties resulting from ozone exposure

Resistance to hot water vapor

  • Figure 5-24: Change in tensile strength resulting from immersion in warm water (50°C) Figure 5-24: Change in tensile strength resulting from immersion in warm water (50°C)
  • Figure 5-25: Change in tensile strength resulting from immersion in hot water (90°C) Figure 5-25: Change in tensile strength resulting from immersion in hot water (90°C)
  • Figure 5-26: Change in tensile strength resulting from immersion in hot water

    Figure 5-26: Change in tensile strength resulting from immersion in hot water

  • Figure 5-27: Change in tensile strength resulting from treatment with hot water vapor

    Figure 5-27: Change in tensile strength resulting from treatment with hot water vapor

Resistance to oils and chemicals

Resistance to hot gasoline

  • Type of gasoline: Synthetic gasoline (isooctane/toluene = 70/30 VOL %)
  • Test specimen: ASTMD638 Type1(1/8"t)
Table 5-1: Resistance to gasoline
Grade Treatment
temperature
(°C)		 Treatment
time
(h)		 Tensile
strength
(MPa)		 Breaking
elongation
(%)		 Impact
strength※
(kJ/m2)		 Weight
change
(%)		 Dimensional
change
(%)
CM3001G-30 130 0 183 5.6 65 - -
130 600 172 5.6 55 +0.57 +0.01
CM3001-N 120 0 85 116 - - -
120 400 85 63 - +0.64 -
120 600 84 70 - +0.77 -

※ Impact strength (using unnotched sample)

Resistance to hot light oil

  • Material: CM3001G-30
  • Test specimen: ASTM D638 Type 1(1/8"t)
  • Light oil: 250g/m3 water mixture
  • Treatment temperature: 80°C
Table 5-2: Resistance to hot light oil
Treatment
time
(h)		 Tensile
strength
(MPa)		 Breaking
elongation
(%)		 Flexural
strength
(MPa)		 Flexural
modulus
(GPa)		 Izod impact
strength
(J/m)		 Weight
change
(%)		 Dimensional
change
(%)
0 177 4.6 261 9.3 111 - -
100 174 4.7 252 8.6 108 +0.20 0
300 174 4.4 257 9.2 105 +0.20 0
500 173 4.6 257 9.2 110 +0.18 0
1,000 165 5.0 247 8.9 102 +0.44 0

Resistance to hot motor oil (Part 1)

  • Material: CM3001G-30
  • Test specimen: ASTMD638 Type 1(1/8"t)
  • Motor oil: 20W-40
  • Treatment temperature: 80°C
Table 5-3: Resistance to hot motor oil (Part 1)
Treatment
time
(h)		 Tensile
strength
(MPa)		 Breaking
elongation
(%)		 Flexural
strength
(MPa)		 Flexural
modulus
(GPa)		 Izod impact
strength
(J/m)		 Weight
change
(%)		 Dimensional
change
(%)
0 177 4.6 261 9.3 111 - -
100 178 4.6 257 9.2 107 +0.05 0
300 178 4.5 257 9.2 103 +0.10 0
500 177 4.6 259 9.5 103 +0.07 0
1,000 176 4.8 257 9.4 102 +0.10 0

Resistance to hot motor oil (Part 2)

  • Material: CM3001G-30
  • Test specimens:(1)Tensile: ASTM D638 Type 1(1/8"t) (2)Impact: ASTM D256 Type 1 (1/8"t, using unnotched sample)
  • Motor oil: Branded motor oils
  • Treatment conditions: 150°C×168h
Table 5-4: Resistance to hot motor oil (Part 2)
Chemical name Tensile
strength
(MPa)		 Breaking
elongation
(%)		 Izod impact
strength
(J/m)		 Weight
change
(%)
Blank 178 5.0 610 -
Toyota CASTLE Special 20w/40SD 177 5.5 420 +0.1
Nissan Motor Oil Super 20w/40 174 5.4 450 +0.1
Honda ULTRAS SAE10w/30 174 5.5 460 +0.3
Mitsubishi DIAMOND Deluxe APSE 175 5.5 420 +0.1

Resistance to repeated heat cycling on chemical-treated product

  • Material: CM3001G-30
  • Test specimen: ASTMD638 Type1(1/8"t)
  • Chemicals: See list of solutions below
  • Treatment conditions: Immerse product in solution at room temperature for 24 hours, then expose to 130°C for 24 hours. That is one cycle. Perform five cycles.
Table 5-5: Resistance to repeated heat cycling on chemical-treated product
Chemical name Cycles Tensile strength
(MPa)		 Breaking strength
(%)		 Flexural strength
(MPa)		 Flexural modulus
(Gpa)
※2
Izod impact strength
(kJ/m2)
Blank - 185 5.2 270 9.91 68
Ethylene glycol
(Reagent grade 1)		 1 186※1
(190)		 5.2
(5.2)		 269
(269)		 9.20
(9.50)		 69
(72)
3 191
(199)		 5.3
(5.0)		 269
(268)		 8.83
(9.27)		 73
(75)
5 191
(199)		 5.3
(5.0)		 269
(268)		 8.78
(9.42)		 69
(73)
Washer fluid
(Toyota brand)		 1 186
(191)		 5.6
(5.8)		 265
(268)		 9.10
(9.70)		 64
(71)
3 188
(196)		 5.7
(6.0)		 262
(265)		 8.65
(9.65)		 62
(70)
5 190
(195)		 5.2
(5.4)		 258
(270)		 8.53
(9.63)		 63
(69)
Brake fluid
(NR-3)		 1 185
(182)		 5.3
(5.4)		 264
(274)		 9.40
(9.69)		 65
(72)
3 192
(198)		 5.6
(6.0)		 259
(275)		 8.74
(9.59)		 66
(78)
5 193
(192)		 5.0
(5.3)		 257
(270)		 9.10
(9.37)		 69
(75)
LLC fluid
(CASTLE Special)		 1 187
(190)		 5.5
(5.8)		 265
(270)		 9.80
(9.54)		 70
(69)
3 188
(197)		 5.4
(6.0)		 264
(284)		 9.00
(9.35)		 62
(73)
5 191
(196)		 5.2
(5.7)		 258
(271)		 8.96
(9.40)		 63
(72)
Water
(Tap water)		 1 189
(191)		 5.3
(5.2)		 267
(271)		 9.02
(9.74)		 69
(76)
3 195
(200)		 5.2
(5.0)		 261
(272)		 8.71
(9.42)		 67
(74)
5 192
(199)		 5.2
(5.4)		 251
(279)		 8.34
(9.39)		 70
(72)

※1, Dried (120°C, 760mmHg, 24h) product
※2, Unnotched sample.

  • Figure 5-28: Change in tensile strength resulting from immersion in gasohol Figure 5-28: Change in tensile strength resulting from immersion in gasohol
  • Figure 5-29: Change in tensile strength resulting from immersion in gasohol (at 80°C) Figure 5-29: Change in tensile strength resulting from immersion in gasohol (at 80°C)
  • Figure 5-30: Change in impact strength resulting from immersion in gasohol Figure 5-30: Change in impact strength resulting from immersion in gasohol
  • Figure 5-31: Change in impact strength resulting from immersion in gasohol Figure 5-31: Change in impact strength resulting from immersion in gasohol
  • Figure 5-32: Change in tensile strength resulting from immersion in 50% LLC aqueous solution

    Figure 5-32: Change in tensile strength resulting from immersion in 50% LLC aqueous solution