Ist ein gedrucktes Teil automatisch UL94 V-0?

Nein. Die Einstufung bezieht sich auf den Werkstoff bei einer bestimmten Prüfdicke. Ob das gedruckte Bauteil die Anforderung erfüllt, hängt von Wandstärke, Füllung und Geometrie ab. Wir sagen Ihnen, was belegt ist und was nicht.

Sollte man Flammschutzteile mit 100 % Füllung drucken?

In der Regel ja, oder zumindest mit dicken, geschlossenen Wänden. Hohlräume verhalten sich im Brandfall anders als Vollmaterial.

Welche Unterlagen bekomme ich?

Auf Anfrage das Datenblatt des verwendeten Filaments mit den Herstellerangaben zur Brandklasse sowie die Chargenangabe.

PC FR hält mehr Temperatur aus und ist zäher. ABS FR ist leichter zu verarbeiten und günstiger. Bei Teilen direkt an Wärmequellen empfehlen wir PC FR.

Flame retardant parts to UL94

Housings, covers and brackets near electrical current often have to meet a fire rating. We print from filaments whose base material is UL94 rated and explain honestly what that rating means for your printed part.

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PC FR and ABS FR in stock

Typical applications

Anywhere a short circuit or overheated component must not spread fire.

Electronics enclosures

Enclosures for controls, power supplies and sensors in small series.

Control cabinet parts

Cable holders, covers and touch guards inside cabinets.

Rail and vehicle

Interior parts during development before the moulded series starts.

Charging equipment

Brackets and bezels on chargers and battery modules.

Suitable materials

PC FR for higher temperature and toughness, ABS FR as the cheaper option for indoor use.

Read the materials guide

Key details for flame retardant parts

01Required class (V-0, V-1, V-2 or HB) and the standard or specification it comes from.
02Minimum wall thickness in the part. A UL94 rating always applies to a given thickness.
03Whether the part itself needs certification or a material declaration is enough.
04Operating temperature and distance to live components.

Full DFM checklist

What UL94 really says about a printed part

UL94 describes how a plastic test specimen behaves when a flame is applied: whether it keeps burning, for how long and whether burning drips fall. V-0 is the strictest of the common classes. What matters is the thickness at which the class was reached.

An FDM part consists of layers and often an infill structure. That is why we design flame retardant parts with walls at least as thick as the material's test thickness and print them as solid as possible. This brings the part as close as possible to the tested specimen.

For formal component approval the material declaration is not always enough. We say that openly. For prototypes, pre-series and many plant fixtures, however, it is exactly the basis designers need.

Manufacturing data at a glance

Location: Schleswig, Germany
Part size: up to approx. 250 x 250 x 250 mm, larger parts split and joined
Quantities: 1 to several thousand, no minimum order quantity
Tolerances: approx. ±0.2 mm for PLA, PETG and carbon grades, ±0.3 mm for ABS, ASA and PC
Layer height: 0.10 to 0.30 mm
Materials: 20 engineering filaments from PLA to PA12-CF and PC FR
File formats: STEP, STL, 3MF, OBJ, IGES up to 200 MB
Lead time: 2 to 4 working days for samples, 4 to 15 working days for series

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Flame retardant 3D printing FAQ

Is a printed part automatically UL94 V-0?: No. The rating refers to the material at a given test thickness. Whether the printed part meets the requirement depends on wall thickness, infill and geometry. We tell you what is documented and what is not.
Should flame retardant parts be printed solid?: Usually yes, or at least with thick closed walls. Voids behave differently in a fire than solid material.
What documents do I receive?: On request the datasheet of the filament used with the manufacturer's fire rating and the batch information.
PC FR or ABS FR?: PC FR withstands more heat and is tougher. ABS FR is easier to process and cheaper. For parts right next to heat sources we recommend PC FR.