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Important notice to our current and future customers:

G. Bopp + Co. AG (“Bopp”) and even their existing customers have recently noticed that online offerings of products which look similar to those of Bopp and declaring them as “Bopp” products are increasingly being introduced on online purchasing platforms. There is no doubt that these offerings infringe Bopp’s trademarks, violate unfair competition (and other) laws and seriously deceive the market participants.

Bopp have reacted and undertaken respective measures to defend and protect their rights. Considering the enormous number of violators, it seems inevitable that this process will take longer than Bopp desire.

In the meantime, Bopp would like to emphasize the following:
Products manufactured by G. Bopp + Co. AG in Zurich, Switzerland are exclusively available from its subsidiaries in Switzerland, Germany, England, Italy, Sweden, USA, Korea and China and the nominated representations.

G. Bopp + Co. AG are one of the world’s leading producers of precision woven wire meshes providing their high-quality products to market leaders in the high tech, pharmaceutical, chemical, aeronautics, plastic, glass, ceramics, mechanical engineering, paper, environmental technology and even space travel (www.bopp.com).

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Materials and alloys

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  

 
  Corrosion resistant

 
  Heat resistant alloys

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-Wert = %Cr + 3.3%Mo + 16%N

 
  Steels with a PRE value over 33 are resistant to seawater attack.

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  

 
  Special Applications

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


Please select a contact person and send us your inquiry

Technical Sales Manager
Tel.: +1 704 628 0395
E-Mail

Technical Sales Manager
Tel.: 434 219 9800
E-Mail


Tel.: +1 845 296 1065
E-Mail

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X

Important notice to our current and future customers:

G. Bopp + Co. AG (“Bopp”) and even their existing customers have recently noticed that online offerings of products which look similar to those of Bopp and declaring them as “Bopp” products are increasingly being introduced on online purchasing platforms. There is no doubt that these offerings infringe Bopp’s trademarks, violate unfair competition (and other) laws and seriously deceive the market participants.

Bopp have reacted and undertaken respective measures to defend and protect their rights. Considering the enormous number of violators, it seems inevitable that this process will take longer than Bopp desire.

In the meantime, Bopp would like to emphasize the following:
Products manufactured by G. Bopp + Co. AG in Zurich, Switzerland are exclusively available from its subsidiaries in Switzerland, Germany, England, Italy, Sweden, USA, Korea and China and the nominated representations.

G. Bopp + Co. AG are one of the world’s leading producers of precision woven wire meshes providing their high-quality products to market leaders in the high tech, pharmaceutical, chemical, aeronautics, plastic, glass, ceramics, mechanical engineering, paper, environmental technology and even space travel (www.bopp.com).