Alloy 904L or simply known as UNS N08904 is a super austenitic stainless steel. Fittings produced from this nickel-chromium alloy are covered by specification ASTM B366. The Stainless Steel 904L Pipe Fittings were designed with the intention of being used between moderate to high corrosion resistance across a wide range of processing industries. The combination of high chromium and nickel content, in the alloy coupled with inclusions of molybdenum and copper, ensures the UNS N08904 Tee good to excellent corrosion resistance properties.
Stainless Steel 904L Pipe Fittings
ASTM A403 WP904L Elbow
ASME SA403 904L Tee
The high alloying content in this super austenitic stainless steel fittings is what improves the resistance of the alloy to chloride stress corrosion cracking to a great extent. This being said, fittings such as the SS 904L Reducer made from 904L stainless steel are still susceptible to cracking in the presence of a higher chlorine concentration. Because the alloy has a lower content of carbon in these fittings are resistant to sensitization caused by intergranular corrosion. Which means the B366 WP904L Elbow fitting could be used in an as welded condition. The alloys impressive properties like higher tensile strength, superior resistance to corrosion, in conjunction with pitting, as well as intergranular corrosion, would act as an indication of the Stainless Steel 904L Fittings suitability to be used in applications involving piping systems, heat exchangers, pollution control equipment, and bleaching systems.
Dimensions | ASME B16.28, MSS-SP-43, ASME/ANSI B16.9, BS4504, BS10, BS4504, BS1560, |
---|---|
Thickness | SCH10, SCH 80, SCH 100, SCH20, SCH30, STD SCH40, SCH 160, XXS, SCH60, XS, SCH 120, SCH 140, available with NACE MR 01-75 |
Type | DN15-DN1200 |
Connection | Welding |
Bending Radius | R=2D, 3D, 5D, 6D, 8D, 1D, 10D or Custom |
Manufacturing process | Press, Forge, Push, Cast, etc. |
Specialized manufacturer of | Tees, Crosses, Reducers, 90º Elbows, Stub End, Pipe Bend, 45º Elbows, Pipe Cap |
SS B366 904L Fittings | Stainless Steel 904L Pipe Fitting |
Stainless Steel 1.4539 90 Degree Elbow | ASME SB366 904L End Cap |
UNS N08904 45 Degree Elbow | ASTM B366 904L Buttweld Fitting |
Stainless Steel 1.4539 3D Elbow | 904L Stainless Steel End Cap |
ASTM B366 904L 5D Elbow | Stainless Steel 904L Reducer |
UNS N08904 Equal Cross | Stainless Steel 904L Pipe Cap |
SS B366 904L Lateral Tee | ASME SB366 904L Cross Tee |
904L Stainless Steel 1D Elbow | 904L SS Short Stub End |
ASTM B366 904L Stub End | SS B366 904L Pipe Cap |
SS B366 904L Buttweld Fittings | ASME SB366 904L Pipe Bend |
UNS N08904 Pipe Fittings | 904L Stainless Steel Long Stub End |
ASTM B366 904L Eccentric Reducer | ASME SB366 904L Long Radius Elbow |
Stainless Steel 904L Equal Tee | 904L Stainless Steel Stub End |
Stainless Steel 1.4539 Concentric Reducer | UNS N08904 5D Elbow |
904L SS Concentric Reducer | Stainless Steel 1.4539 Short Radius Elbow |
904L SS Reducing Cross | ASTM B366 904L Equal Cross |
ASTM A403 WP904L 90 Degree Elbow | $40.98/Each |
ASTM A403 WP904L Reducing Tee | $90.64 / each |
ASTM A403 WP904L Concentric Reducer Fittings | $106.60 / each |
ASTM A403 WP904L seamless elbow | $56.65 / each |
ASTM A403 WP904L schedule 40 split tee | $139.56 / each |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
SS 904L | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Nominal Pipe Size |
Outside Diameter |
90° Elbows | 45° Elbows | 180° Returns | ||||
---|---|---|---|---|---|---|---|---|
(inches)
|
Long Radius
|
Short Radius
|
Long Radius
|
Long Radius
|
||||
(mm)
|
(inches)
|
Center to Face
(inches) |
Center to Face
(inches) |
Center to Face
(inches) |
Radius
(inches) |
Center to Center
(inches) |
Back to face
(inches) |
|
1/2
|
21.3
|
0.840
|
1 1/2
|
–
|
5/8
|
2
|
1 7/8
|
|
3/4
|
26.7
|
1.050
|
1 1/8
|
–
|
7/16
|
2 1/4
|
1 11/16
|
|
1
|
33.4
|
1.315
|
1 1/2
|
1
|
7/8
|
3
|
2 3/16
|
|
1 1/4
|
42.2
|
1.660
|
1 7/8
|
1 1/4
|
1
|
3 3/4
|
2 3/4
|
|
1 1/2
|
48.3
|
1.900
|
2 1/4
|
1 1/2
|
1 1/8
|
3
|
4 1/2
|
3 1/4
|
2
|
60.3
|
2.375
|
3
|
2
|
1 3/8
|
4
|
6
|
4 3/16
|
2 1/2
|
73.0
|
2.875
|
3 3/4
|
2 1/2
|
1 3/4
|
5
|
7 1/2
|
5 3/16
|
3
|
88.9
|
3.500
|
4 1/2
|
3
|
2
|
6
|
9
|
6 1/4
|
3 1/2
|
101.6
|
4.000
|
5 1/4
|
3 1/2
|
2 1/4
|
7
|
10 1/2
|
7 1/4
|
4
|
114.3
|
4.500
|
6
|
4
|
2 1/2
|
8
|
12
|
8 1/4
|
5
|
141.3
|
5.563
|
7 1/2
|
5
|
3 1/8
|
10
|
15
|
10 5/16
|
6
|
168.3
|
6.625
|
9
|
6
|
3 3/4
|
12
|
18
|
12 5/16
|
8
|
219.1
|
8.625
|
12
|
8
|
5
|
12
|
24
|
16 5/16
|
10
|
273.1
|
10.750
|
15
|
10
|
6 1/4
|
15
|
30
|
20 3/8
|
12
|
323.9
|
12.750
|
18
|
12
|
7 1/2
|
18
|
36
|
24 3/8
|