Product TextsCelcon® acetal copolymer grade GC25A is a glass coupled formulation This grade offers excellent 4
%
ISO 294-4, 2577
成型收缩(Molding shrinkage) (normal)
1.2
%
ISO 294-4, 2577
机械性能(机械性能(Mechanical properties))
值(Value)
单位(Unit)
测试标准(Test Standard)
ISO数据(ISO数据(CAMPUS/ISO) Data)
拉伸模量(Tensile Modulus)
8600
MPa
ISO 527-1/-2
破坏时应变(Stress at break)
106
MPa
ISO 527-1/-2
破坏时应变(Strain at break)
2
%
ISO 527-1/-2
简支梁冲击强度(Charpy impact strength) (+23°C)
25
kJ/m²
ISO 179/1eU
简支梁冲击强度(Charpy impact strength) (-30°C)
35
kJ/m²
ISO 179/1eU
简支梁缺口冲击强度(Charpy notched impact strength) (+23°C)
6.4
kJ/m²
ISO 179/1eA
热性能(热性能(Thermal properties))
值(Value)
单位(Unit)
测试标准(Test Standard)
ISO数据(ISO数据(CAMPUS/ISO) Data)
熔化温度(熔化温度(Melting temperature)) (10°C/min)
165
°C
ISO 11357-1/-3
温度负荷变形(Temp. of deflection under load) (1.80 MPa)
160
°C
ISO 75-1/-2
维卡软化温度（50℃/ h的50N）Vicat softening temperature
161
°C
ISO 306
COEFF线性热(Coeff. of linear therm. expansion) (parallel)
25
E-6/K
ISO 11359-1/-2
COEFF线性热(Coeff. of linear therm. expansion) (normal)
120
E-6/K
ISO 11359-1/-2
其他属性(Other properties)
值(Value)
单位(Unit)
测试标准(Test Standard)
ISO数据(ISO数据(CAMPUS/ISO) Data)
吸水率(Water absorption)
0.8
%
Sim. to ISO 62
吸湿性(Humidity absorption)
0.2
%
Sim. to ISO 62
密度(Density)
1580
kg/m³
ISO 1183
Test specimen production
值(Value)
单位(Unit)
测试标准(Test Standard)
ISO数据(ISO数据(CAMPUS/ISO) Data)
Processing conditions acc. ISO
9990
-
ISO ....-2
Injection Molding, melt temperature
205
°C
ISO 294
Injection Molding, mold temperature
90
°C
ISO 10724
Injection Molding, injection velocity
200
mm/s
ISO 294
Injection Molding, pressure at hold
86
MPa
ISO 294
Diagrams For better uniformity in molding especially when using regrind Max water content = 0.35%.35 Mpa/50 PSI) are favored. Using a low compression screw e.- general purpose 2:1 compression ratio) can result in unmelted Using a high back pressure to make Mold surface temperature: 5 mm (0.060 in.). May require mold temperature as high as Wall thickness greater than 3 mm (1/8 in.) may use a cooler (65 ) may use a cold mold surface down to 25 C (80 F). In general, mold It may be Other extrusionPREPROCESSING For better uniformity Desiccant hopper dryers are not required. Max. moisture 35% The screw should be a high compression ratio of at least The design should be approximately 35% each for the feed ), annealing is recommended to reduce M-Base Engineering + Software GmbH assumes no liability for the system to be free of errors. The user takes sole responsibility for the use of this data under the exclusion of every liability from M-Base; this is especially valid for claims of compensation resulting from consequential damages. M-Base explicitly points out that any decision about the application of materials must be double checked with the producer of this material. This includes all contents of this system. Copyright laws are applicable for the content of this system.
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