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UNS N08904

We are professional UNS N08904 material factory from China

UNS N08904 is an austenitic stainless steel designed for moderate to high corrosion resistance. Its low carbon content improves cleanliness and weld strength
We could supply UNS N08904 stainless steel in following forms:
Forging:Forged Rings,Forged Pipes,Rolled Rings,Forging Sleeves,Forging Disks,Forged Bushings,Forging Sleeves,Forged Tube Sheets,Forged Shafts,Forged Valve Parts(Valve Bodies,Valve seat rings,valve bonnets) and so on
Sheet,Plate,Strips,Coils
Bar:Round Bars,Square bars,flat bars,hollow bars,hex bars and so on
Pipe & Tube:Seamless tubes,seamless pipes,welded pipes,welded tubes,tubings,coiled tubes,U-bend Tubes.
Fittings (elbows, tees,stub-ends,returns,caps,crosses,reducers,and pipe nipples)
Wire:welded wires,wire rods
Flanges:in slip-ons,blinds,weld-necks,lapjoints,long welding necks,socket welds
Fasteners:bolts,screws,nuts,studs,Washers,Sockets,pins
Cnc Machining Parts,CNC turning parts,CNC Stamping parts
The Chemical composition of UNS N08904 is as follows:

Analysis

Carbon

0.02% max

Chromium

19.00-23.00%

Manganese

2.00% max

Nickel

23.00-28.00%

Silicon

1.00% max

Molybdenum

4.00-5.00%

Phosphorous

0.045% max

Copper

1.00-2.00%

Sulphur

0.035% max

 

 

 

The mechanical property of UNS N08904 is as follows

Temper

Annealed

Tensile Rm

71

ksi (min)

Tensile Rm

490

MPa (min)

R.p. 0.2% Yield

32

ksi (min)

R.p. 0.2% Yield

220

MPa (min)

Elongation (2” or 4D gl)

35

% (min)

The corrosion resistance of UNS N08904 is intermediate between super austenitic grades, with 6% molybdenum content, and standard 316L austenitic grades. UNS N08904 is less resistant to nitric acid than grades 304L and 310L, which are free of molybdenum. This steel grade needs to be solution treated following cold working, to achieve maximum stress corrosion cracking resistance under critical environments.
UNS N08904 is widely used in Wiring in electrostatic precipitators,Oil refinery components,Seawater cooling devices,Gas scrubbing plants,Pulp and paper processing industries,Acetic, phosphoric and sulphuric acid processing plants
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