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Dies, materials of construction

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Topic: Dies, materials of construction

mathieu
Member

Posts: 1
From:Quebec Canada
Registered: Apr 2003

posted April 26, 2003 11:00 AM

I would like to know what are the types of steel that are used to make the dies for plastic extrusion.
thanks alot

Steve H
Moderator

Posts: 168
From:New Zealand
Registered: Jun 2001

posted April 26, 2003 08:42 PM

G'day Mathieu

The materials used in die construction depend on what material(s) the die is intended to process and for how long.

For sheet dies, factors for material selection include:

Common die body materials for sheet dies are

Pre-Hardened Super P20 Tool Steel (approx 4140)Hardness Rc 36-39 with Duplex Hard Chrome Plating .0010"-.0015" Thick on the flow surfaces. Lips and lands polished to 2RMS
15-5 Stainless Steel, condition H1025 with a hardness of Rc 38-42

Walter Michaeli's book Extrusion Dies For Plastics And Rubber will give you some more info.

Steve H

[This message has been edited by Steve H (edited April 28, 2003).]

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