Chemical Resistance Chart - Liquiflo
ADVERTISEMENT
1
2
3
4E N G I N E E R I N G - C h e m i c a l D a t a
TM
CHEMICAL RESISTANCE CHART
factors, which can cause chemical ratings
Notice: The Chemical Resistance Chart
to change within a given application.
given on the following pages is intended
Such factors include variations in
as a general guide for rating the resistance
temperature, pressure and concentration,
of typical engineering materials to
chemical combinations, impurities or filler
common industrial chemicals. It is not
materials, aeration, agitation and exposure
intended as a guarantee of material
time. It is recommended that pumps and
performance. The ratings in the chart are
materials first be tested under simulated
based on data obtained from technical
field service conditions. Never test or
publications, material manufacturers and
operate a pump before acceptable
laboratory tests. The information given in
chemical ratings have been obtained
the chart should be used as a first
and the proper safety precautions have
approximation for material selection,
been taken .
rather than the final answer. This is because
chemical effects are dependent on many
Interpretation of Chemical Resistance Ratings
Rating
Meaning
Corrosion Rate (CR)
Units
CR < 0.002
in/yr
Excellent – Virtually no effect;
very low corrosion rate.
CR < 0.05
mm/yr
A
0.002 < CR < 0.02
in/yr
Good – Minor effect; low corrosion rate
or slight discoloration observed.
0.05 < CR < 0.5
mm/yr
B
Fair – Moderate effect; moderate to high
0.02 < CR < 0.05
in/yr
corrosion rate. Softening, weakening or
swelling may occur.
C
0.5 < CR < 1.3
mm/yr
Not recommended for continuous use.
CR > 0.05
in/yr
Severe Effect – Immediate attack, explosive
or very high corrosion rate.
D
CR > 1.3
mm/yr
Not recommended for any use.
—-
—-
No Data Available
N
1 Ratings for all chemicals apply at room temperature unless chemical is molten (e.g., paraffin wax, sulfur, etc.).
Notes:
2 Ratings for Carbon apply to Graphite-grade Carbon (i.e., Graphite or Carbon-60).
3 Ratings for SiC apply to Self-Sintered Silicon Carbide.
4 Ratings for Ceramic apply to Ceramic Aluminum Oxide (Al
O
).
2
3
5 Ratings apply to chemicals at 100% concentration (except for salts which are based on aqueous solutions)
unless stated otherwise.
Definition of Terms:
= Stainless Steel
= Poly-tetra-fluoro-ethylene (PTFE)
®
SS
Teflon
Alloy-20 = High-Nickel Stainless Steel
= Poly-phenylene Sulfide (PPS)
®
Ryton
= Ni-Cr-Mo Alloy
= Poly-ether-ether-ketone
Alloy-C
PEEK
= Titanium
= Fluorocarbon Rubber
®
Ti
Viton
= Carbon
= Ethylene-Propylene-Diene Monomer (Rubber)
C
EPDM
= Silicon Carbide
= Nitrile Buna Rubber
SiC
NBR
= Ceramic
= Perfluorinated Elastomer
®
Cer.
Kalrez
1
t e l .
9 0 8
.
5 1 8
.
0 7 7 7
f a x .
9 0 8
.
5 1 8
.
1 8 4 7
w w w .
l i q u i f l o
. c o m
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Business