NIPPON STEEL's original duplex stainless steel Achieve reductions in total costs!
Index
- Total cost saving with NIPPON STEEL's original duplex stainless steel
- 5 major characteristics of duplex stainless steel
- What is duplex stainless steel?
- Duplex stainless steel lineup
-
NIPPON STEEL's original duplex stainless steel NSSC 2120™ & NSSC™2351
- Improvement of weldability
-
Higher strength and corrosion resistance make possible Value Engineering
from generic stainless steel or other materials. - Applications
- High heat-input welding is possible
-
Weld corrosion resistance is equivalent to or greater than that of TP304 and
TP316L -
NSSC 2120™ 6th Monodzukuri Nippon Grand Awards
Received the Minister of Economy, Trade and Industry Award
Total cost saving with NIPPON STEEL's original duplex stainless steel!
New value is added to society by a fusion of cutting edge materials and the creativity to make the best of them.
5 major characteristics
to reduce total cost
5 major characteristics of duplex stainless
steel improve the performance of the
stainless steel and reduce total cost.
5 major characteristics of duplex stainless steel
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Higher strength of
materials enables to lead
to lighter-weight design.
Higher strength of materials enables to lead to lighter-weight design.
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Superior corrosion
resistance!
Superior corrosion resistance!
Pitting resistance in a chloride environment
Crevice corrosion in a chloride environment
Exposure test
Results from exposure for 1 year in SE Asia ocean
Sulfuric acid resistance limit of application
(≦0.1mm/y)
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Excellent
polishablity!
Minimizing polishing man-hours contributes to
cost reduction
Excellent polishablity!
NSSC 2120™ has superior polishablility as the finish after 1 pass (yellow box) of it is equivalent to the finish after 3 passes of TP304, reducing the man-hours for polishing.
Material before polishing:Cold-rolled 3.0 mm, No. 2B finish
Polishing powder:#400 alumina based powder
Polishing conditions:Buff diameter 400 mm, speed 2000 rpm, material movement speed 286 mm/s
Buffering performance may be affected by the difference in the grain boundary
depth that can be seen in the material surface after pickling.
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Price stability!
Price stability!
Uses much smaller amounts of Ni and Mo – expensive raw materials that subject to
price fluctuation.
Graph of fluctuation in
rare metal prices
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What is duplex
stainless steel?
Duplex stainless steel has advantages of both austenitic and ferritic structure.
Metal structure of duplex stainless steel
Duplex stainless steel lineup Extensive lineup
Various grades are available to fulfill customers’ needs.
Please feel free to consult with us.
Scroll sideways to view.
Lineup widely covers from resource-saving Lean grade to the
Super grade to withstand seawater. User can choose a grade
depending on service environment.
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NIPPON STEEL's duplex stainless steel.
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Features of
NIPPON STEEL's
original duplex
stainless steel
NSSC 2120™ / NSSC™2351
NIPPON STEEL's original duplex
stainless steel
Improvement of weldability!
※ Compared to conventional duplex stainless steel
NIPPON STEEL's duplex stainless steel greatly improves weldability.
※ Compared to conventional duplex stainless steel
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NIPPON STEEL's duplex stainless steel.
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Higher strength and corrosion resistance make possible Value Engineering from generic stainless steel or other materials.
Higher strength and corrosion resistance make possible Value Engineering from generic
stainless steel or other materials.
Positioning of NSSC 2120™ and NSSC™2351
-
Corrosion resistance is equal to or better than TP304.
-
SCC resistance is largely superior to TP304.
-
Higher strength leads to thinner
and lighter designs. -
Although initial cost is higher than carbon steel, overall life cycle cost
is lower.
-
Corrosion resistance is equal to or better than TP316L.
-
SCC resistance is largely superior to TP316L.
-
As a replacement for TP316L,
thinner and lighter designs are available and lifecycle cost can be reduced. -
Changing from high-grade
materials and avoiding excessively high specifications lead to large reduction of cost.
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NSSC 2120™ and NSSC™2351 weldability
Higher heat-input welding
is available.
Higher heat-input welding is available.
The recommended heat input range for NSSC 2120™ and NSSC™2351 is wider
than generic duplex stainless steel, allowing higher heat-input welding.
Higher heat-input welding leads to welding efficiency.
Because SAW high heat-input welding can be used, efficient welding is possible
(2× or more compared to ordinary welding). It is particularly suitable for
construction of large-size structures.
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NSSC 2120™ and NSSC™2351
weld corrosion resistance
Weld corrosion resistance is equivalent to or greater than
that of TP304 and TP316L.
NSSC 2120™ weld corrosion resistance is equivalent to or greater than that of TP304.
Corrosion resistance in a neutral
high-salinity environment
(Critical pitting temperature)
Exposure test results
Exposed for 1 year approximately 30 m from the
ocean on the coast of Yamaguchi Prefecture.
TIG welding was performed at the center,
followed by pickling.
NSSC™2351 weld corrosion resistance is equivalent to or greater than that of TP316L.
Sample pitting potentials of base metal and welds
Ferric chloride test results
JIS G 0578-B 72 h 15°C TIG welding, 3 mmt, V-groove, 2 passes, Ar shield Filler used (YM-DP8/2351, YM-316L/316L)
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Applications
NIPPON STEEL's original duplex stainless steel is used in a wide range of applications.
River facilities
Fresh water environment：
NSSC 2120™
Brackish water environment：
NSSC™2351
Buildings and civil engineering
Inland environment：
NSSC 2120™
Coastal environment：
NSSC™2351
Tanks and other factory equipment
Equipment using TP304：
NSSC 2120™
Equipment using TP316L：
NSSC™2351
※For a full seawater environment, S31260 or Super Duplex S32750 is recommended.
NSSC 2120™
6th Monodzukuri Nippon Grand Awards
Received the Minister of
Economy, Trade and Industry Award.
