S40975 Stainless Steels - Special Steels Applications and
Specifications
409Ni stainless steel is a low chromium niobium stabilized ferritic
stainless steel. The addition of nickel can improve corrosion
resistance and toughness in welding conditions.Compared with 430 or
304 stainless steel it does not belong to corrosion resistance or
high temperature oxidation resistance material, but it is more
suitable for low alloy corrosion resistance steel, low carbon steel
and coated low carbon steel.When stainless steel 409Ni is exposed
to harsh atmospheric conditions, dyeing may occur.409 Nickel alloys
should only be used in aesthetically not as a primary requirement,
such as in mildly corrosive conditions.The annealed 409Ni is
malleable and does not hardento any significant extent during cold
operation.
As a result, it can be pulled onto a wire and formed into the
desired shape using most standard techniques.409Ni should not be
used in low temperature applications below zero due to brittle
transition and fracture hazards. It is a ferritic stainless
steel.In automotive applications, the SS409NI has found its main
application.
The 409Ni stainless steel is an ideal material for meters larger
than 0.120 in. Its weldability and toughness is superior to that of
the standard 409 model.The cost is relatively low.Transportation
applications include automotive exhaust flanges, hopper bodies and
discharge chutes, intermodal containers, trailers, bus frames, and
dump truck bed liners.In conditions as slippery as those
encountered in coal handling equipment, 409 nickel stainless steel
is a more economical solution.Potential coal handling applications
include chutes, hoppers, bunkers, flooring, perforated plates,
sizing machines, flight conveyor grinders, vibrating screen plates,
silo feeders, paddle mixers, screw feeders, fuel tank and dryer
assemblies.Additional applications include noise suppression
barriers, mud pipes, heat shields, cyclones, silos, belt scraper
blades, screens and tanks.
Technical Data for 409Ni, UNS S40975 Stainless Steel:
| Chemical Composition(%) |
| C | -- | Mn | -- | P | -- | S | -- | Si | -- | Cr | -- | Ni | -- | N | -- | Fe |
| 0.03 | -- | 1 | -- | 0.04 | -- | 0.03 | -- | 1 | -- | 10.5-11.7 | -- | 0.50=1.0 | -- | 0.03 | -- | Rest |
| Mechanical Property |
| TENSILE STRENGTH(MPA) | -- | YIELD STRENGTH(MPA) | -- | ELONGATION(%) |
| 415 | -- | 276 | -- | 20 |
