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Material Selection Chart

This chart is intended as a guide in the selection of economical materials. It must be kept in mind that corrosion rates may vary widely with tem-perature, concentration, and the presence of trace elements or abrasive solids. Blank spaces in the chart indicate a lack of accurate corrosion data for those specific conditions. In general, the chart is limited to metals and non-metals regularly furnished by ITT-Goulds.

Note: Maximum temperature limits are shown where data is available. Contact a Goulds representative for temperature limits of all materials before final material selection.

Code:

A Recommended
B Useful resistance
X Unsuitable
Steel Carbon steel, cast iron and ductile iron
Brz Carbon steel, cast iron and ductile iron
316 Stainless steel
A-20 Carpenter stainless
CD4MCu CD4MCu stainless steel
Alloy 2205 2205 Alloy 2205 stainless steel
Alloy 2205 Alloy 2205 stainless steel
C-276 Wrought Hastelloy ? C-276 alloy
Ti Titanium unalloyed
ETFE Ethylenetetrafluoro-ethylene (Tefzel ? ) FP Fluoropolymers (e.g.,Teflon ? ) including perfluoroalkoxy (PFA), polytetrafluoroethylene (PTFE) and fluorinated ethylene propylene (FEP)
FRP Fiber-reinforced plastic (vinylester resin)
EPDM Ethylenepropylene rubber (Nordel ? )
FKM1 Standard grades; dipolymers of hexafluoropropylene (HFP) and vinylidene fluoride (VF 2 ) (Viton ? )
FKM2 Specialty grades; terpolymerscomprising at least three of the following: HFP, VF2 , tetrafluorethylene (TFE), perfluoromethylvinyl ether (PMVE) or ethylene (E). Specialty grades may have significantly improved chemical compatibility compared to standard grades in many harsh chemical environments (Viton ? ).
FFKM Copolymer of TFE and PMVE (Kalrez ? )
PVDF Polyvinylidene fluoride (Kynar ? , Solef ? )
1 Compatibility is dependent on specific freon. Contact elastomer manufacturer.

Table 1


Table 2


Table 3


Table 4