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Covestro Makrolon® 2258 Polycarbonate

Category Polymer , Thermoplastic , Polycarbonate (PC) , Polycarbonate, Molded
Manufacturer Covestro
Trade Name Makrolon®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Covestro Makrolon® 2258 Polycarbonate.pdf
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Material Notes:
Main characteristics:• High toughness• Good heat resistance• Glass-like transparency, optical quality• High dimensional accuracy and stabilityGrade characteristics:• Medical devices - biocompatible ISO 10993-1• Low viscosity; easy releaseAs of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
Physical Properties Metric English Comments
Bulk Density 0.660 g/cc
0.0238 lb/in³
pellets; ISO 60
Density 1.20 g/cc
0.0434 lb/in³
ISO 1183-1
Moisture Absorption at Equilibrium 0.12 %
0.12 %
ISO 62, 50% RH
Water Absorption at Saturation 0.30 %
0.30 %
ISO 62
Linear Mold Shrinkage, Flow 0.0065 cm/cm

@Thickness 2.00 mm
0.0065 in/in

@Thickness 0.0787 in
60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse 0.0065 cm/cm

@Thickness 2.00 mm
0.0065 in/in

@Thickness 0.0787 in
60x60x2 mm; 500 bar; ISO 294-4
Melt Flow 37 g/10 min

@Load 1.20 kg,
Temperature 300 °C
37 g/10 min

@Load 2.65 lb,
Temperature 572 °F
ISO 1133
Mechanical Properties Metric English Comments
Puncture Resistance 4900 N

@Temperature 23.0 °C
1100 lb (f)

@Temperature 73.4 °F
ISO 6603-2
5900 N

@Temperature -30.0 °C
1330 lb (f)

@Temperature -22.0 °F
ISO 6603-2
Ball Indentation Hardness 115 MPa
16700 psi
ISO 2039-1
Tensile Strength at Break 60.0 MPa
8700 psi
50 mm/min; ISO 527-1,-2
Tensile Strength, Yield 65.0 MPa
9430 psi
50 mm/min; ISO 527-1,-2
Elongation at Break >= 50 %
>= 50 %
Nominal, 50 mm/min; ISO 527-1,-2
125 %
125 %
50 mm/min; b.o. ISO 527-1,-2
Elongation at Yield 6.0 %
6.0 %
50 mm/min; ISO 527-1,-2
Tensile Modulus 2.40 GPa
348 ksi
1 mm/min; ISO 527-1,-2
Flexural Strength 97.0 MPa
14100 psi
2 mm/min; ISO 178
Flexural Yield Strength 73.0 MPa

@Strain 3.50 %
10600 psi

@Strain 3.50 %
2 mm/min; ISO 178
Flexural Modulus 2.35 GPa
341 ksi
2 mm/min; ISO 178
Izod Impact, Notched (ISO) 12.0 kJ/m²

@Thickness 3.20 mm,
Temperature -30.0 °C
5.71 ft-lb/in²

@Thickness 0.126 in,
Temperature -22.0 °F
complete break; b.o. ISO 180-A
65.0 kJ/m²

@Thickness 3.20 mm,
Temperature 23.0 °C
30.9 ft-lb/in²

@Thickness 0.126 in,
Temperature 73.4 °F
partial break; b.o. ISO 180-A
Charpy Impact Unnotched NB

@Temperature 23.0 °C
NB

@Temperature 73.4 °F
ISO 179-1eU
NB

@Temperature -30.0 °C
NB

@Temperature -22.0 °F
ISO 179-1eU
NB

@Temperature -60.0 °C
NB

@Temperature -76.0 °F
ISO 179-1eU
Charpy Impact, Notched 1.20 J/cm²

@Thickness 3.00 mm,
Temperature -30.0 °C
5.71 ft-lb/in²

@Thickness 0.118 in,
Temperature -22.0 °F
complete break; ISO 7391/b.o. ISO 179-1eA
5.50 J/cm²

@Thickness 3.00 mm,
Temperature 23.0 °C
26.2 ft-lb/in²

@Thickness 0.118 in,
Temperature 73.4 °F
partial break; ISO 7391/b.o. ISO 179-1eA
Puncture Energy 55.0 J

@Temperature 23.0 °C
40.6 ft-lb

@Temperature 73.4 °F
ISO 6603-2
60.0 J

@Temperature -30.0 °C
44.3 ft-lb

@Temperature -22.0 °F
ISO 6603-2
Tensile Creep Modulus, 1 hour 2100 MPa
305000 psi
ISO 899-1
Tensile Creep Modulus, 1000 hours 1700 MPa
247000 psi
ISO 899-1
Thermal Properties Metric English Comments
CTE, linear, Parallel to Flow 65.0 µm/m-°C

@Temperature 23.0 - 55.0 °C
36.1 µin/in-°F

@Temperature 73.4 - 131 °F
ISO 11359-1,-2
CTE, linear, Transverse to Flow 65.0 µm/m-°C

@Temperature 23.0 - 55.0 °C
36.1 µin/in-°F

@Temperature 73.4 - 131 °F
ISO 11359-1,-2
Thermal Conductivity 0.200 W/m-K
1.39 BTU-in/hr-ft²-°F
cross-flow; ISO 8302
Hot Ball Pressure Test 136 °C
277 °F
IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi) 137 °C
279 °F
ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi) 124 °C
255 °F
ISO 75-1,-2
Vicat Softening Point 145 °C

@Load 5.10 kg
293 °F

@Load 11.2 lb
50°C/h; ISO 306
146 °C

@Load 5.10 kg
295 °F

@Load 11.2 lb
120°C/h; ISO 306
Glass Transition Temp, Tg 145 °C
293 °F
10°C/min; ISO 11357-1,-2
UL RTI, Electrical 125 °C
257 °F
UL 746B
UL RTI, Mechanical with Impact 115 °C
239 °F
UL 746B
UL RTI, Mechanical without Impact 125 °C
257 °F
UL 746B
Flammability, UL94 HB

@Thickness 2.90 mm
HB

@Thickness 0.114 in
V-2

@Thickness 0.750 mm
V-2

@Thickness 0.0295 in
Flash Point 480 °C
896 °F
ASTM D 1929
550 °C
1020 °F
self ignition; ASTM D 1929
Glow Wire Test 875 °C

@Thickness 0.750 mm
1610 °F

@Thickness 0.0295 in
GWIT; IEC 60695-2-13
875 °C

@Thickness 1.50 mm
1610 °F

@Thickness 0.0591 in
GWIT; IEC 60695-2-13
900 °C

@Thickness 3.00 mm
1650 °F

@Thickness 0.118 in
GWIT; IEC 60695-2-13
Optical Properties Metric English Comments
Refractive Index 1.586
1.586
Procedure A; ISO 489
Haze <= 0.80 %

@Thickness 3.00 mm
<= 0.80 %

@Thickness 0.118 in
ISO 14782
Transmission, Visible 87 %

@Thickness 4.00 mm
87 %

@Thickness 0.157 in
ISO 13468-2
88 %

@Thickness 3.00 mm
88 %

@Thickness 0.118 in
ISO 13468-2
89 %

@Thickness 1.00 mm
89 %

@Thickness 0.0394 in
ISO 13468-2
89 %

@Thickness 2.00 mm
89 %

@Thickness 0.0787 in
ISO 13468-2
Electrical Properties Metric English Comments
Volume Resistivity 1.00e+16 ohm-cm
1.00e+16 ohm-cm
IEC 60093
Surface Resistance 1.00e+16 ohm
1.00e+16 ohm
IEC 60093
Dielectric Constant 3.0

@Frequency 1.00e+6 Hz
3.0

@Frequency 1.00e+6 Hz
IEC 60250
3.1

@Frequency 100 Hz
3.1

@Frequency 100 Hz
IEC 60250
Dielectric Strength 34.0 kV/mm

@Thickness 1.00 mm
864 kV/in

@Thickness 0.0394 in
IEC 60243-1
Dissipation Factor 0.00050

@Frequency 100 Hz
0.00050

@Frequency 100 Hz
IEC 60250
0.0090

@Frequency 1.00e+6 Hz
0.0090

@Frequency 1.00e+6 Hz
IEC 60250
Comparative Tracking Index 250 V
250 V
Solution A; IEC 60112
Processing Properties Metric English Comments
Melt Temperature 280 °C
536 °F
Injection molding; ISO 294
Mold Temperature 80.0 °C
176 °F
Injection molding; ISO 294
Injection Velocity 200 mm/sec
7.87 in/sec
ISO 294
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