---
type: "Technical Data Sheet"
title: "CMC 70041, 70042 and 70043 – Preliminary Technical Data Sheet"
description: "Polyimide film filled with ceramics for significantly higher thermal conductivity compared to Kapton® MT while still retaining outstanding mechanical and electrical properties."
resource: "https://datasheets.cmc.de/pdf/cmc-70041-70042-and-70043-en.pdf"
language: "en"
product: "CMC 70041, 70042 and 70043"
product_family: "cmc"
document_date: "2017-08"
status: "draft"
translation: "/cmc-70041-70042-and-70043-de.md"
generated: { by: "process:cmc-datasheets/0.1.0", at: "2026-09-23T16:15:39Z" }
sources:
  - id: "pdf"
    resource: "https://datasheets.cmc.de/pdf/cmc-70041-70042-and-70043-en.pdf"
    title: "Preliminary Technical Data Sheet CMC 70041, 70042 and 70043"
    author: "CMC Klebetechnik GmbH"
    last_modified: "2017-08-03T08:31:26Z"
---

# CMC 70041, 70042 and 70043 – Preliminary Technical Data Sheet

> CMC TYPES 70041            25 µm                1,0 mil 70042            37,5 µm              1,5 mil Kapton® MT+ by DuPont 70043            50 µm                2,0 mil

[PDF data sheet (binding)](/pdf/cmc-70041-70042-and-70043-en.pdf) · [Deutsche Version](/cmc-70041-70042-and-70043-de.md)

Issued: 2017-08

## Product description

Polyimide film filled with ceramics for significantly higher thermal conductivity compared to Kapton® MT while still retaining outstanding mechanical and electrical properties. Perfectly suited for insulation purposes in electronics where controlled heat transfer is essential.

| Property | Value |
|---|---|
| Colour | yellow |

## Mechanical properties

| Property | Value |
|---|---|
| Tensile strength according to ASTM D882 | ca. 80 to 90 MPa or N/mm² |
| Elongation at break according to ASTM D882 | ca. 50% |
| Modulus according to ASTM D882 | ca. 4,2 GPa or kN/mm² |

## Electrical properties

```text
                                                        CMC 70041        ca. 5,4 kVeff./mil
 Dielectric strength according to ASTM D149             CMC 70042        ca. 4,9 kVeff./mil
                                                        CMC 70043        ca. 3,9 kVeff./mil
```

## Thermal properties

```text
                                                        CMC 70041        ca. 0,78 W/(m·K)
 Thermal conductivity according to ASTM D5470           CMC 70042        ca. 0,80 W/(m·K)
                                                        CMC 70043        ca. 0,85 W/(m·K)
```

## Other properties

| Property | Value |
|---|---|
| Flammability according to UL94 | V-0 |

Information concerning regulation (EC) No 1907/2006 (REACh): This product contains one or more substances of very high concern (SVHCs) from the candidate list in amounts greater than 0.1% (w/w). Safe handling instructions can be found here: http://www.cmc.de/en/technical-information/reach.html

---

*The technical data are average values and do not replace the user's own testing. Subject to change without notice. The PDF data sheet is binding.*