Covestro Makrolon 2805 550115 PC

Application：General purpose grade

Material attribute: ·Medium viscosity ·Better impact resistance

Melt flow index: 10g / 10min (300℃ 1.2kg)

Material attribute: Mould release agents

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Covestro Makrolon 2805 PC 550115 Description

Makrolon 2805 is general purpose polycarbonate resin (PC material) produce Covestro AG. It has medium viscosity and superior impact resistance, and is commonly used in the production of thick walled products.

makrolon 2805 medium viscosity polycarbonate

The Makrolon 2805 PC resin we supply is sourced from Covestro Investment (Shanghai) Company. Standard colors include Makrolon 2805 550115—transparent PC resin—and Makrolon 2805 901510—opaque black.

As shown in the image on the left, Makrolon 2805 550115 is a clear PC resin in a cylindrical shape. Please contact us if you require a custom color.👉+86 15837933829

Covestro Makrolon 2805 550115 Advantage

Good processability. Makrolon 2805 PC exhibits melt flow index (MFI) of 10g/10min at 300°C 1.2kg test environment, Compared to the more commonly used low-viscosity PC, Makrolon 2407 has a higher viscosity but offers better molding results, making it suitable for thick-walled products, such as transparent appliance housings.
Better impact resistance. Compared to the commonly used low-viscosity PC resin—Makrolon 2405, due to Makrolon 2805 PC resin higher molecular weight, offers significantly superior impact resistance, with an Izod notched impact strength of 70 kJ/m² and a Charpy notched impact strength of 75 kJ/m² under test conditions at 23°C, making it suitable for applications requiring high impact resistance.

Comparison of the Properties of Makrolon 2805 and Makrolon 2405 Polycarbonates

	Makrolon 2805	Makrolon 2405	Unit
Melt flow index (300℃ 1.2kg)	10	20	g/10min
Izod notched impact, 23℃ 3mm	70	65	kJ/㎡
Izod notched impact, -30℃ 3mm	15	15	kJ/㎡
Charpy notched impact, 23℃ 3mm	75	65	kJ/㎡
Charpy notched impact, -30℃ 3mm	16	14	kJ/㎡

Why choose Baiyou as Covestro Makrolon 2805 550115 PC supplier?

Leadingmedium viscosity polycarbonate resin pellets supplier (PC material) , 20+ years of experience in plastic product manufacturing and chemical raw material import and export
Fastest Arrival, with warehouses in multiple ports
1,000+ types of resins are available, and we have cooperated with large petrochemical groups for 30+ years
Free Samples for production testing
Wholesale price, even a piece of goods is based on the wholesale price

Key Attributes

Covestro Makrolon 2805 550115
Product information
Manufacturer		Covestro AG
Other Certificates		MSDS
Part Marking Code		>PC material<
Color		·Transparent ·Translucent ·Black
Material Shape		PC Pellets
Process		Injection molding
Features		·Medium viscosity
Additives		Lubricant
Physical properties	Standard	Value	Unit
Density	ISO 1183	1200	kg/m³
Bulk density	ISO 62	660	g/cm³
Humidity absorption, 23℃ saturation	ISO 62	0.3	%
Water absorption, 23℃ saturation	ISO 62	0.3	%
Water absorption, 23℃ 50 % r.h. equilibrium	ISO 62	0.12	%
Melt volume flow rate (MVR)	ISO 1133	9	cm³/10min
Moulding shrinkage, normal 60602 mm/ 50 bar	ISO 294	0.70	%
Moulding shrinkage, parallel 60602 mm/ 50 bar	ISO 294	0.65	%
Moulding shrinkage, parallel / normal	ISO 2577	0.60-0.80	%
Mechanical behavior	Standard	Value	Unit
Tensile modulus, 1 mm/min	ISO 527	2400	MPa
Yield stress, 50 mm/min	ISO 527	66	MPa
Yield strain, 50 mm/min	ISO 527	6.2	%
Nominal strain at break, 50 mm/min	ISO 527	＞50	%
Strain at break, 50 mm/min	ISO 527	＞130	%
Stress at break, 50 mm/min	ISO 527	70	MPa
Flexural modulus, 2 mm/min	ISO 178	2400	MPa
Flexural strength, 2 mm/min	ISO 178	97	MPa
Flexural strain at flexural strength, 2 mm/min	ISO 178	7.1	%
Flexural stress at 3.5% flexural strain, 2 mm/min	ISO 178	73	MPa
Tensile creep modulus, 1000 h	ISO 899	1900	MPa
Tensile creep modulus, 1 h	ISO 899	2200	MPa
Impact	Standard	Value	Unit
Charpy notched impact strength, 23℃ 3mm	ISO 179/1eA	75	kJ/㎡
Charpy notched impact strength, -30℃ 3mm	ISO 179/1eA	16	kJ/㎡
Izod notched impact strength, 23℃	ISO 180/A	70	kJ/㎡
Izod notched impact strength, -30℃	ISO 180/A	15	kJ/㎡
Ball indention hardness	ISO 2039	115	N/mm
Thermal	Standard	Value	Unit
Melting temperature, 10 ℃/min	ISO 11357	300	°C
Melting temperature, first heat	ISO 11357	300	°C
Thermal conductivity of melt	Internal method	0.25	W/m·℃
Spec. heat capacity of melt	Internal method	1840	J/kg K
Vicat softening temperature, 50℃/h 50N	ISO 306	145	℃
Vicat softening temperature, 120℃/h 50N	ISO 306	146	℃
Glass transition temperature, 10℃/min	ISO 306	144	℃
Coeff. of linear therm. expansion, parallel, 23 to 55℃	IEC 11359	0.65	E-6/K
Coeff. of linear therm. expansion, normal, 23 to 55℃	IEC 11359	0.65	E-6/K
Coeff. of linear therm. expansion, normal	IEC 11359	18	E-6/K
Electrical	Standard	Value	Unit
Volume resistivity	IEC 60093	1E14	Ω.m
Surface resistivity	IEC 60093	1E16	Ω
Comparative tracking index (CTI)	IEC 60112	250
Comparative tracking index (CTI M)	IEC 60112	125
Electric strength, 1 mm	IEC 60243-1	34	kV/mm
Flame retardant	Standard	Value	Unit
UL recognized, 94HB Flame Class Rating	UL 94	2.5	mm
UL recognized, 94V-2 Flame Class Rating 2nd value	UL 94	0.75	mm
Glow wire flammability index 930℃, passes at	IEC 60695-2-12	3.0	mm
Glow wire flammability index 850℃, passes at	IEC 60695-2-12	1.5	mm
Glow wire flammability index 850℃, passes at	IEC 60695-2-12	0.75	mm
FMVSS Class B, burning rate, thickness 1 mm	ISO 3795	Passed	mm/min
Oxygen index (LOI)	ISO 4589	28	%
Glass transition temperature, 10℃/min	ISO 306	144	℃
Optical	Standard	Value	Unit
Luminous transmittance	ISO 13468	87-89	%
Haze, 3mm	ISO 14782	<0.8	%
Refractive index	ISO 489	1.585
Injection molding guidance	Standard	Value	Unit
Drying temperature		120	℃
Drying time		2-4	hrs
Maximum moisture content		≤0.02	%
Melt temperature		280-320	℃
Standard melt temperature		300	℃
Barrel temperatue, Nozzle		290-300	℃
Barrel temperatue, Front		280-290	℃
Barrel temperatue, Middle		270-280	℃
Barrel temperatue, Rear		250-260	℃
Mold temperature		80-120	℃
Hold pressure		50-75	%
Plastic back pressure		50-150	bar
Peripheral screw speed		0.05-0.2	m/s
Shot-to-cylinder size		30-70	%
Vent depth		0.025-0.075	mm