904L Stainless Steel Seamless Pipe
904L Stainless steel seamless pipe, also known as N08904 seamless stainless steel pipe or 904L stainless steel seamless pipe, is a high-alloy austenitic stainless tube with a high molybdenum and additional copper content. With excellent corrosion resistance to sulfuric and phosphoric conditions, 904L stainless steel seamless pipes are widely used in chemical plant, heat exchanger industry, cellulose industry, etc. 904L Stainless steel seamless tubes are inventoried in diameter from 21.3mm to 323.9mm. We have rich experiences in manufacturing such long 904L seamless tube as 11.8m, 12m, 18m. Sheye Metal provides a lot of processing services, including cutting to length, polishing surface, punching, painting, etc. In some countries, 904L stainless steel is also called as UB6 stainless steel or 1.4539. With Strong technical force, advanced equipment and skilled craftsmanship, Sheye Metal can manufacture UB6 stainless steel pipe and good quality is guaranteed. For metal, we are serious.
Specification of 904L Stainless Steel Seamless Pipe | |
Size |
OD: 10.0 ~ 1219mm; WT: 0.5 ~ 100mm; Length: 5.8m, 6m, 11.8m, 12m, Max.18m |
Process |
Seamless, Cold Drawn, Cold Rolled, Hot Rolled |
End |
PE(Plain End), BE(Beveled End), NPT, BW(Butt Weld End) |
Surface |
Aid Pickling, Polishing, Brushing |
Standard |
ASTM B677 |
Theoretical Weight(kg/m) |
Weight/meter = (OD-WT)*WT*0.02507 Both OD and WT in mm. |
Materials and Manufacture |
904L Stainless steel seamless pipe shall be supplied in the solution-treated condition. (The recommended heat treatment shall consist of heating to a temperature of 1065 to 1150℃) |
Note:
OD is the specified outside diameter.
WT is the specified wall thickness
Stainless steel pipes shall be pickled free of scale. When bright annealing is used, pickling is not necessary.
Plain ends cut and deburred will be furnished. If threaded ends or ends beveled for welding are desired, give details.
Chemical Composition of 904L Stainless Steel Seamless Pipe
Note1: 904L Stainless steel material shall conform to the requirements as to chemical composition prescribed in the below table;
Note2: If the analysis of 904L stainless steel seamless pipe is performed by the purchaser, the material shall conform to the product analysis variations prescribed in the below table.
Element |
UNS N08904(904L) |
Product Analysis Variations, under min or over max of the Specified Limit of Element, % |
C, max |
0.020 |
0.005 |
Mn, max |
2.0 |
0.04 |
P, max |
0.045 |
0.005 |
S, max |
0.035 |
0.005 |
Si, max |
1.00 |
0.05 |
Ni |
23.0 to 28.0 |
0.20 |
Cr |
19.0 to 23.0 |
0.20 |
Mo |
4.0 to 5.0 |
0.10 |
Cu |
1.0 to 2.0 |
0.10 |
Iron |
balance |
… |
Mechanical Properties of 904L Seamless Stainless Steel Pipe and Tube
Alloy |
Temper |
Tensile Strength |
Yield Strength, 0.2% |
Elongation in2 in. or |
UNS N08904 |
Solution Annealed |
71 (490) |
31 (220) |
35 |
Tolerances for Outside Diameter and Wall Thickness of 904L Seamless Stainless Steel Pipe/Tube
Nominal Outside Diameter, mm |
Tolerances |
|||||
Outside Diameter, mm |
Thickness of Specified Average Wall, % |
Thickness of Specified Minimum Wall, % |
||||
+ |
- |
+ |
- |
+ |
- |
|
Cold-Worked Pipe and Tube | ||||||
Up to 16, excl. |
0.13 |
0.13 |
15.0 |
15.0 |
30 |
0 |
16 to 38, incl. |
0.19 |
0.19 |
10.0 |
10.0 |
20 |
0 |
38 to 89, incl |
0.25 |
0.25 |
10.0 |
10.0 |
22 |
0 |
89 to 114, incl. |
0.38 |
0.38 |
10.0 |
10.0 |
22 |
0 |
114 to 152, incl. |
0.51 |
0.51 |
12.5 |
12.5 |
25 |
0 |
152 to 168, incl. |
0.64 |
0.64 |
12.5 |
12.5 |
25 |
0 |
Hot-Finished Tube3,4 | ||||||
38.1 to 139.7, excl. |
0.79 |
0.79 |
12.5 |
12.5 |
28.5 |
0 |
139.7 to 234.95, excl |
1.19 |
1.19 |
12.5 |
12.5 |
28.5 |
0 |
Note3: The wall thickness tolerances for hot-finished tubes includes eccentricity tolerance up to±12.5%;
Note4: For hot-finished tube 127.0mm and under in outside diameter, the tolerances on the outside diameter apply for individual measurements and include ovality. For tubes over 127.0mm in outside diameter, the mean outside diameter shall conform to the tolerances of the above table and individual measurements shall not exceed twice the tolerances of the above table.
Tolerances for Length of 904L Seamless Stainless Steel Pipe/Tube
When pipe or tube is ordered cut-to-length, the length shall not be less than that specified, but a variation of +3.2mm will be permitted, except that for lengths over 9.1m, a variation of 6.4mm will be permitted.
Tests of 904L Stainless Steel Seamless Pipe
1.Chemical Analysis (ASTM E345)
2.Mechanical Properties (Tension: ASTM E8)
3.Nondestructive Test
3.1:100% Hydrostatic Test
3.2:According to ASTM A450/A450M
Schedules of Cold-drawn 904L Stainless Steel Seamless Pipe
The schedules of cold-drawn, seamless UNS N08904 pipe as given in below table are regularly available. Other schedules may be furnished, and the manufacturer should be consulted.