Covestro Makrolon TC629 999900 PC | Thermal Conductivity

 Covestro Makrolon TC629 999900 PC Description 

Makrolon TC629 999900 is manufactured at multiple locations; we give priority to products manufactured in Germany.

As shown in the figure on the left, because Makrolon TC629 999900 contains 15-40% graphite, the material has a high-gloss black finish and is shaped approximately like an ellipsoid.

Covestro Makrolon TC629 999900 PC Advantage

• Electrical conductivity / Heat dissipation, The key difference from conventional PC resin is that Makrolon TC629 999900 PC material achieves effective electrical conductivity and efficient heat dissipation through the addition of graphite. Its volume resistivity is only 2.1 × 10⁴ Ω·m, and its surface resistivity is only 4.1 × 10³ Ω, both of which are significantly lower than those of standard PC resin; Its thermal conductivity (in-plane) reaches 15 W/(m·K), making it ideal for high-heat-dissipation applications requiring electrical conductivity, such as heat sinks, battery pack housings, and automotive headlight assemblies.

  	Makrolon TC629 999900	Makrolon 2407	Unit
  Thermal conductivity, through-plane, 23℃ 50% R.H.	1.2	0.2	W/(m·K)
  Volume resistivity	2.1E4	1E14	Ω·m
  Surface resistivity	4.1E3	1E16	Ω

• Flame retardant PC resin. Makrolon TC629 9999000 polycarbonate material meets the UL 94 V-0 flame-retardant rating and can be used for medical device housings and equipment structural components that require high flame-retardant performance.
• Outdoor Using. As a high-performance PC material suitable for outdoor applications, Makrolon TC629 999900 is certified to UL 746C f1 and effectively resists UV exposure, water immersion, and prolonged exposure to water in outdoor applications.

Why choose Baiyou as Covestro Makrolon TC629 999900 PC supplier?

• Leading Thermally Conductive Polycarbonate 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

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 Key Attributes 

Covestro Makrolon TC629 PC 999900
Product information
Manufacturer		Makrolon A.G.
Other Certificates		MSDS
Part Marking Code		>PC material<
Color		Black
Material Shape		PC Pellets
Features		·Thermal Conductivity · Electrical Conductivity · UL 94 V-0
Additives		Graphite
Physical properties	Standard	Value	Unit
Density	ISO 1183	1380	kg/m³
Melt viscosity,1000s^-1^/300℃	ISO 11443	145	Pa·s
Melt viscosity,1000s^-1^/300℃	ISO 11443	270	Pa·s
Mold shrinkage, parallel, 60*60*2 mm	ISO 294-4	0.10-0.20	%
Mold shrinkage, parallel, 60*60*2 mm	ISO 294-4	0.10-0.20	%
Mechanical behavior	Standard	Value	Unit
Tensile modulus, 1 mm/min	ISO 527	6500	MPa
Strain at break, 5 mm/min	ISO 527	1	%
Stress at break, 5 mm/min	ISO 527	41	MPa
Flexural strain at flexural strength 2mm/min	ISO 178	1	%
Flexural modulus, 2 mm/min	ISO 178	7400	MPa
Flexural strength, 2 mm/min	ISO 178	58	MPa
Charpy impact strength, 23 ℃	ISO 179/1eU	6	kJ/㎡
Thermal	Standard	Value	Unit
Vicat Softening Temperature, 50 N; 50℃/h	ISO 306	144	°C
Temperature of deflection under 0.45 MPa (HDT)	ISO 75-1,-2	143	°C
Temperature of deflection under 1.80 MPa (HDT)	ISO 75-1,-2	137	°C
Coefficient of linear thermal expansion (CLTE), parallel, 23 to 55 ℃	ISO 11359-1, -2	0.2	10⁻⁴/K
Coefficient of linear thermal expansion (CLTE), normal, 23 to 55 ℃	ISO 11359-1, -2	0.4	10⁻⁴/K
Burning behavior, 2 mm	UL 94	V-0
HDT/Ae, 1.8 MPa Edgew 120*10*4 sp=100mm	ISO 75/Ae	122	℃
Thermal conductivity, in-plane, 23℃, 50 % r.h.	ASTM E1461	15	W/(m·K)
Thermal conductivity, through-plane , 23℃, 50 % r.h.	ASTM E1461	15	W/(m·K)
Glow wire test (GWFI), 3.0 mm	IEC 60695-2-12	960	℃
Glow wire test (GWFI), 1.5 mm	IEC 60695-2-12	960	℃
Glow wire test (GWIF), 3.0 mm	IEC 60695-2-13	960	℃
Glow wire test (GWIF), 1.5 mm	IEC 60695-2-13	960	℃
Electrical	Standard	Value	Unit
Volume resistivity	IEC 60093	2.1E4	Ω.m
Surface resistivity	IEC 60093	4.1E3	Ω

 Partners 

We have established long-term relationships with 80+ well-known  companies around the world

 Warehouse And Shipping 

20+ years' experience consultant with a supply chain of 1000+ plastic raw materials in China.

Quantity (tonnes)	1-100	100-300	>300
Lead time (days)	7-10	10-15	To be negotiated

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References and Notes

1. Makrolon ,"MAKROLON TC629 999900 polycarbonate technical data sheet", Makrolon A.G. , 20/09/2026
2. Makrolon ,"MAKROLON TC629 999900 safety data sheet ", Makrolon A.G. , 20/09/2026