STAINLESS STEEL TO COPPER PIPE PERFORMANCE COMPARISON

ITEMSTAINLESS STEEL (304)COPPER PIPESTAINLESS STEEL TO COPPER COMPARISON
ANTI-CORROSION PROPERTIES
Atmospheric
Corrosion CO2,
H2O, SO2, H2S
No CorrosionCorrosionExposure to atmosphere causes
corrosion and results in verdigris
3% of dissolved
oxygen in
water: pH value
low alkalinity
or acid degree
is high
No CorrosionCorrosionOne of the reasons for copper
pipe “Blue Water”
Chlorine (CI)≤200ppm≤70ppmThe CI in copper is about 36% of
that in stainless steel pipe, it is also
a leading reason for copper pipe
“Blue Water”
Sulfide in
Hot Springs
No CorrosionCorrosionProduces copper pipe
“Blue Water”
Water Flow Rate≤19.6 ft/second≤4.9 ft/secondWater flows thru stainless steel
more efficiently than copper. The
surface of copper is 17% rougher
than that of stainless steel, and as
a result water flow above 4.9ft/
second causes structural corrosion
in copper, while it takes 19.6 ft/
second to affect the inner wall of
stainless steel.
Hot Water
Circulations makes
Pipe Structure
Corrosion
≥212˚F≤120˚FHot water circulation in copper
pipe increases corrosion and aggravates
“Blue Water”
HEALTH AND ENVIRONMENTAL PROTECTION
Tensile Strength
(N/mm2)
≥530≥210The strength of copper pipe is only
40% that of stainless steel pipe.
Copper is also susceptible to leaks
as a result of external forces
Thermal
Conductivity
(100˚C)(cal/
cm.s.100˚C)
0.0390.934The insulation factor of copper
pipe is ¼ that of stainless steel
pipe
Health IndicatorsGoodNormal“Blue Water” in copper pipe
cannot be completely resolved
Working Life
(Years)
≥100About 40The working life of copper pipe is
40% that of stainless steel pipe

 

METAL PIPE PERFORMANCE COMPARISON

PIPEMATERIALSTANDARDTENSILE STRENGTHELONGATION %
Linkplus SS Pipe304JWWAG116≥ 540-750>36
Linkplus SS Pipe304LJWWAG116≥ 520-670>36
Linkplus SS Pipe316JWWAG116≥ 530-680>36
Linkplus SS Pipe316LJWWAG116≥ 530-680>36
Copper PipeCopperJISG3452≥ 210>30
Galvanized
Steel Pipe
SteelJWWAH101≥ 294/

 

PERFORMANCE COMPARISON OF STAINLESS STEEL PIPE TO PLASTIC PIPE

ITEMSTAINLESS STEEL (304)PLASTIC PIPECOMPARISON
ANTI-CORROSION PROPERTIES
Tensile Strength
(N/mm2)
≥ 530≥ 49Strength of plastic products is
only 9.2% that of Stainless Steel
Ability to Resist
Water
HighLowWater scouring is a common
reason for wall degradation
Ultraviolet
Radiation
No aging affectSerious aging
affects
Plastic tubing is not suitable for
environments where plumbing is
exposed to light
(10-6˚C)
(0-100˚C)
Coefficient
of Thermal
Expansion
1670The expansion coefficient of
plastic pipe is four time that of
SS pipe, environmental changes
can cause the pipe to bend and
deform, which can lead to leaks
Low Temperature
Tolerance
≤-270˚CBelow 5˚C
becomes brittle
Plastic tubing does not perform
well at low temperatures
High Temperature
Tolerance
≥400˚CHigh temperature
precipitates
harmful materials
Plastic pipe cannot withstand high
temperatures, it will melt and
burn producing poisonous gasses
HEALTH AND ENVIRONMENTAL PROTECTION
Environmental
Hormones
NoneSome haveChemicals leaching out of plastic
pipe seriously affects the human
endocrine system
Condensation
of Impurities
DifficultEasyThe inner surface of plastic pipe
gets rough and easily generates
‘stinky water’
Hidden DangersNoneSome haveMost plastic pipe is made of
recycled materials with unknown
origins, resulting in
“hidden dangers”
Harmful SubstancesEasy to concealEasy to harbor
pests
Plasticizer can dissolve in
water and adversely affect
the water quality
Odor ProblemsNoneHigh temperature
produces peculiar
smell
When plastic pipe is heated
it can adversely affect
the water quality
Environmental
Performance
100% recyclableNonbiodegradablePlastic tubing is not
100% recyclable
Working Life
(Years)
≥1005-20The working life of plastic pipe
is ¼ that of Stainless Steel