Know-How
Materials
A significant percentage of BOPP steel meshes are woven using stainless steel to DIN 1.4301 (AISI 304) or DIN 1.4401 (AISI 316). We also offer a wide range of other alloys, produced to individual customer specifications. Our portfolio includes over 2500 different meshes.
We are happy to produce meshes using special alloys and other weaveable materials to bespoke specifications. If you would like to know more about our capabilities in this area, please contact us directly.
All technical specifications cover typical values and also laboratory values. These may be subject to production-related discrepancies as well as other technical changes due to further development.
This table serves as an overview of the various material characteristics and is not a comprehensive list. It does not contain all information about the various alloys.
STAINLESS STEEL
Stainless steel is divided into the following categories:
- Ferritic stainless steels are magnetic and nickel free. These are iron/chrome alloys.
- Austenitic stainless steels are not magnetic and are used extensively. They contain nickel, ca. 17%, as well as molybdenum, titanium or niobium additions.
- Austenitic-ferritic steels are magnetic and are also described as duplex steels.
EXAMPLES OF ALLOYS
| Stainless steel | Composition (mean value) | PRE-value | Temp.- Resistance in °C |
|||||
| %C max. |
%N max. |
% Cr |
% Ni |
% Mo |
others | |||
| Ferritic | ||||||||
| 1.4016 (AISI 430) | 0.04 | 16.5 | 16.5 | |||||
| 1.4521 (AISI 444) | 0.025 | 17.5 | 1.9 | 0.7% TI | 24 | |||
| Austenitic | ||||||||
| 1.4301 (AOSO 304) | 0.04 | 0.1 | 18 | 9 | 20 | 450 | ||
| 1.4306-07 (AISI 304L) | 0.02 | 0.1 | 19 | 9 | 21 | 450 | ||
| 1.4401 (AISI 316) | 0.04 | 0.1 | 17 | 11 | 2 | 25 | 450 | |
| 1.4404 (AISI 316L) | 0.02 | 0.1 | 17 | 11 | 2 | 25 | 450 | |
| 1.4435 | 0.03 | 0.1 | 18 | 14 | 2.5 | 28 | 450 | |
| 1.4539 (AISI 904L) | 0.01 | 20 | 25 | 4.3 | 1.5% Cu | 35 | 500 | |
| 1.4541 (AISI 321) | 0.08 | 0.1 | 18 | 11 | 0.7% Ti | 20 | 450 | |
| 1.4547 | 0.02 | 0.2 | 20 | 18 | 6.2 | Cu | 43 | 500 |
| 1.4550 (AISI 347) | 0.08 | 0.04 | 17.5 | 9.5 | Nb | 18 | 450 | |
| 1.4571 (AISI 316 TI) | 0.08 | 0.1 | 17 | 12 | 2.5 | 0.7% Ti | 26 | 450 |
| 1.4841 (AISI 310) | 0.2 | 0.1 | 25 | 20 | 26 | 1100 | ||
| 1.4864 (AISI 330) | 0.05 | 0.1 | 17 | 36 | 19 | 1050 | ||
| 1.4893 | 0.1 | 0.17 | 21 | 11 | Ce | 24 | 1100 | |
| Duplex | ||||||||
| 1.4462 (AIS 318 LN) | 0.02 | 0.17 | 22 | 5.7 | 3.1 | 34 | ||
The formula PRE value (Pitting Resistance Equivalent) enables comparison of the different rustproof steels from the point of view of pitting corrosion, based on the elements of the alloy.
PRE value = %Cr + 3.3%Mo + 16%N
TITANIUM AND ALUMINIUM ALLOYS
| Composition (mean value) |
Rp 0.2 in MPa |
Comments | ||||
| %Ti | %Al | %Mg | Other | |||
| Titan Grade 1 W.Nr 3.7024 | 99.5 | 180 | Biocompatible alloy | |||
| Al. 5018-AlMg3Mn0.4 | Bal. | 3 | Mn | |||
| Al. 5019-Almg5 | Bal. | 5 | Mn | 110 | ||
COPPER AND COPPER ALLOYS
| Composition (mean value) |
Rp 0.2 in MPa |
Comments | ||||
| % Cu |
%Zn | %Mg | Other | |||
| Cu-DHP, 2.0090 | 99.90 | 100 | Resistant in reduced atmospheres | |||
| Cu-ETP, E-Cu57, 2.0060 | 99.90 | 100 | Electrolytic copper | |||
| CuZn37 | 63 | 37 | 180 | Brass | ||
CURRENT STANDARDS FOR WIRE MESH AND WIRE SCREENS
- DIN 4185: Sieve plates; Definitions and Abbreviations
- DIN ISO 4782: Steel wire for filter screens in industrial applications
- DIN ISO 4783: Wire mesh and wire screens for industrial use, Guidelines for selecting combinations of aperture size and wire diameter
- DIN ISO 9044: Industrial wire meshes, Technical Requirements and Testing
- DIN ISO 14315: Wire screens for industrial applications, Technical Requirements and Testing
- DIN ISO 3310: Sieve analysis, Requirements and Testing
