Metals - Baars Group

Introduction

We must emphasize that valve disributors should not be regarded as experts in metallurgy, plastic materials or chemicals. The tables are only intended as a guide in the selection of body and trim materials to handle corrosive media.

Only practical operating experience by the valve user of particular corrosive media can be considered a reliable guide. For new processes or new chemical compounds it is recommended that pilot tests under operating conditions or laboratory tests should be carried out.

Factors which radically influence the performance of valve materials in practice would include

the inherent design and performance characteristics of the valve itself
the process
changes in the concentration of the fluid. For instance start-up concentration may be much higher
or lower than when the process is fully on stream.
temperature and pressure
velocity

Select Corrosive medium by clicking on the relevant first letter below:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Note : Catalogue pages are in PDF format. If you require Adobe Acrobat please click here.

Symbols

A   =   excellent resistance; less than 0,10mm/year
B   =   good resistance; 0,10 - 0,50mm/year
C   =   poor resistance; greater than 0,50mm/year
D   =   not recommended

Abbreviations

C20	'Carpenter' 20Cb-3 stainless alloy
Fr	'Ferralium' alloy
Ic	'Inconel' alloy
Ni	nickel
Ta	tantalum
Ti	titanium
Zr	zirconium
'20'	alloy high nickel stainless steel (20Cr-29Ni-3Mo-3,5Cu-remainder Fe)