While most stainless steels demonstrate resistance to varying concentrations of sulfuric acid, alloy 904L proves to be the most resilient of them. And therefore, most manufacturers recommend the use of grade 904L Stainless Steel Seamless Pipe for applications that specifically use sulfuric acid or in those applications where sulfuric acid is a by-product. Sulfuric acid is a highly corrosive solution, and in higher concentrations, causes materials to disintegrate. And so, using a resilient material like ASTM B673 UNS N08904 ERW Pipe befits these applications. Since copper is an addition to the alloy, the resistance to sulfuric acid has been attributed as a factor.
Copper also gives the UNS N08904 schedule 40 pipe resistance to sodium chloride present in marine environments, making it ideal for engineering purposes. The ASTM A312 tp 904L material is labeled as a super austenitic stainless steel alloy because of its corrosion resistance properties. Because the alloy has a higher content of molybdenum in its alloy, the ASME SB677 TP 904L Square Pipe exhibits superior resistance to localized attack, specifically from corrosion forms like pitting and crevice corrosion. The presence of chlorides and some reductive acids are conducive to pitting and crevice corrosion in conventional alloys, unlike the Stainless Steel 904L Seamless Pipe, which is a more resilient grade.
With respect to its weldability, the alloy has a lower content of carbon, thereby making it easier to manufacture an ASTM A312 tp 904L Welded Pipe. Problems associated with welding such as intergranular corrosion are absent in the material because the lower content of carbon discourages the formation of carbide precipitates on the DIN 1.4539 Rectangular Pipe.
Standard Specification | ASTM A 312/ ASME SA 312/ A790/ SA790/ EN10216-5 |
Size | ½” to 6” NB Sch 10s, 40s, & 80s, 160s |
Wall Thickness | 0.1 - 60 mm |
SS Seamless Pipe Length |
|
Seamless SS Pipe Surface Finish | Cold Finish, Bright, Polished, Annealing, Pickling, or as per client requirements |
Standard | JIS, AISI, ASME, ASTM, AMS, GB, DIN, EN, GOST |
Manufacturing types | Seamless, Welded, ERW, EFW |
Manufacturing Shapes | Round, Square, Rectangle, Box Section |
Manufacturing Technology | Hot / Cold Formed |
Other Grades | SS 446 |
Inspection, Test Reports | EN 10204 3.1, Mill Test Certificates, PMI Test Reports, Chemical Reports, Mechanical Reports, NABL Approved Lab Reports, Visual Inspection Reports, Destructive and Non Destructive Test Reports, Third Party Inspection |
Technique | Cold Rolled Hot Rolled |
Tensile Strength | 520-720 |
Temperature, °C | J/(kg °C) | Temperature, °F | Btu/(lb °F) |
---|---|---|---|
20 | 460 | 68 | 0.11 |
100 | 485 | 200 | 0.12 |
200 | 515 | 400 | 0.12 |
300 | 545 | 600 | 0.13 |
400 | 570 | 800 | 0.14 |
500 | 590 | 1000 | 0.14 |
600 | 605 | 1200 | 0.15 |
700 | 615 | 1300 | 0.15 |
Temperature | Comparison to other High Temperature Pipe | ||||
---|---|---|---|---|---|
°F | °C | Alloy 254 | UNS C69100 Temper TF00 | Type 904L | Alloy 825 |
200 | 93 | 0.88 | 1.00 | 0.82 | 1.00 |
300 | 149 | 0.79 | 1.00 | 0.74 | 0.95 |
400 | 204 | 0.73 | 0.96 | 0.68 | 0.90 |
500 | 260 | 0.69 | 0.63 | 0.87 | |
600 | 315 | 0.66 | 0.58 | 0.84 | |
700 | 371 | 0.64 | 0.56 | 0.81 | |
800 | 426 | 0.79 |
Nominal size [inches] | Outside diameter (OD) [inches] | Outside diameter (OD) [mm] | Wall thickness [inches] | Wall thickness [mm] | Weight [lb/ft] | Weight [kg/m] |
---|---|---|---|---|---|---|
1/8" NPS 6 | 0.41 | 10.3 | 0.068 | 1.73 | 0.24 | 0.37 |
1/4" NPS 8 | 0.54 | 13.7 | 0.088 | 2.24 | 0.42 | 0.63 |
3/8" NPS 10 | 0.68 | 17.1 | 0.091 | 2.31 | 0.57 | 0.84 |
1/2" NPS 15 | 0.84 | 21.3 | 0.109 | 2.77 | 0.85 | 1.27 |
3/4" NPS 20 | 1.05 | 26.7 | 0.113 | 2.87 | 1.13 | 1.69 |
1" NPS 25 | 1.32 | 33.4 | 0.133 | 3.38 | 1.68 | 2.5 |
1 1/4" NPS 32 | 1.66 | 42.2 | 0.14 | 3.56 | 2.27 | 3.39 |
1 1/2" NPS 40 | 1.9 | 48.3 | 0.145 | 3.68 | 2.72 | 4.05 |
2" NPS 50 | 2.375 | 60.3 | 0.154 | 3.91 | 3.65 | 5.44 |
2 1/2" NPS 65 | 2.875 | 73.0 | 0.203 | 5.16 | 5.79 | 8.63 |
3" NPS 80 | 3.5 | 88.9 | 0.216 | 5.49 | 7.58 | 11.29 |
3 1/2" NPS 90 | 4.0 | 101.6 | 0.226 | 5.74 | 9.11 | 13.57 |
4" NPS 100 | 4.5 | 114.3 | 0.237 | 6.02 | 10.79 | 16.07 |
5" NPS 125 | 5.563 | 141.3 | 0.258 | 6.55 | 14.62 | 21.77 |
6" NPS 150 | 6.625 | 168.3 | 0.28 | 7.11 | 18.97 | 28.26 |
8" NPS 200 | 8.625 | 219.1 | 0.322 | 8.18 | 28.55 | 42.55 |
10" NPS 250 | 10.75 | 273.0 | 0.365 | 9.27 | 40.48 | 60.31 |
12" NPS 300 | 12.75 | 323.8 | 0.406 | 10.31 | 53.52 | 79.73 |
14" NPS 350 | 14.0 | 355.6 | 0.437 | 11.13 | 54.57 | 94.55 |
16" NPS 400 | 16.0 | 406.4 | 0.5 | 12.7 | 82.77 | 123.3 |
18" NPS 450 | 18.0 | 457.0 | 0.562 | 14.27 | 104.67 | 155.8 |
20" NPS 500 | 20.0 | 508.0 | 0.594 | 15.09 | 123.11 | 183.42 |
24" NPS 600 | 24.0 | 610.0 | 0.688 | 17.48 | 171.29 | 255.41 |
32" NPS 800 | 32.0 | 813.0 | 0.688 | 17.48 | 230.08 | 342.91 |
Nominal | O.D. Inches | 10s | 10 | 40s & Std | 40 | 80s & E.H. | 80 | 160 |
---|---|---|---|---|---|---|---|---|
1/8 | .405 | .049 | .049 | .068 | .068 | .095 | .095 | |
1/4 | .540 | .065 | .065 | .088 | .088 | .119 | .119 | |
3/8 | .675 | .065 | .065 | .091 | .091 | .126 | .126 | |
1/2 | .840 | .083 | .083 | .109 | .109 | .147 | .147 | .187 |
3/4 | 1.050 | .083 | .083 | .113 | .113 | .154 | .154 | .218 |
1 | 1.315 | .109 | .109 | .133 | .133 | .179 | .179 | .250 |
1 1/4 | 1.660 | .109 | .109 | .140 | .140 | .191 | .191 | .250 |
1 1/2 | 1.900 | .109 | .109 | .145 | .145 | .200 | .200 | .281 |
2 | 2.375 | .109 | .109 | .154 | .154 | .218 | .218 | .343 |
2 1/2 | 2.875 | .120 | .120 | .203 | .203 | .276 | .276 | .375 |
3 | 3.500 | .120 | .120 | .216 | .216 | .300 | .300 | .437 |
3 1/2 | 4.000 | .120 | .120 | .226 | .226 | .318 | .318 | |
4 | 4.500 | .120 | .120 | .237 | .237 | .337 | .337 | .531 |
4 1/2 | 5.000 | .247 | .355 | |||||
5 | 5.563 | .134 | .134 | .258 | .258 | .375 | .375 | .625 |
6 | 6.625 | .134 | .134 | .280 | .280 | .432 | .432 | .718 |
7 | 7.625 | .301 | .500 | |||||
8 | 8.625 | .148 | .148 | .322 | .322 | .500 | .500 | .906 |
9 | 9.625 | .342 | .500 | |||||
10 | 10.750 | .165 | .165 | .365 | .365 | .500 | .593 | 1.125 |
11 | 11.750 | .375 | .500 | |||||
12 | 12.750 | .180 | .180 | .375 | .406 | .500 | .687 | 1.312 |
14 | 14.000 | .188 | .250 | .375 | .437 | .500 | .750 | 1.406 |
16 | 16.000 | .188 | .250 | .375 | .500 | .500 | .843 | 1.593 |
18 | 18.000 | .188 | .250 | .375 | .562 | .500 | .937 | 1.781 |
Stainless Steel 904L Pipe | 4 inch Stainless Steel 1.4539 Seamless Pipe |
Stainless Steel 1.4539 Pipes | SS B677 TP904L Welded Pipes |
904L Stainless Steel Seamless Steel Pipe | ASTM B677 TP 904L Cold Drawn Welded Pipes |
Stainless Steel 1.4539 Welded Pipe | UNS N08904 Cold Drawn Pipes |
SS B677 TP904L ERW Pipe | Schedule 5S 904L SS Seamless Pipes |
UNS N08904 EFW Pipe | Schedule 40 ASME SB677 TP 904L Pipe |
904L SS Cold Drawn Seamless Pipes | SS B677 TP904L Precision Pipe |
Stainless Steel 904L Seamless Steel Precision Pipe | High pressure 904L Stainless Steel Pipe |
ASME SB677 TP 904L Cold Drawn Seamless Pipes | 904L SS Electropolished Pipe |
SS B677 TP904L Custom Pipe | Stainless Steel 904L Cold Drawn Pipes |
ASTM B677 TP 904L Round Pipe | UNS N08904 Exhaust Pipe |
904L SS Square Pipe | ASTM B677 TP 904L Thin Wall Pipe |
ASTM B677 TP 904L Rectangular Pipe | Small diameter ASME SB677 TP 904L pipe |
NPS | Outside Diameter (OD) | Wall Thickness (WT) | Weight | Weight | |||
in | mm | in | mm | Sched | kg/Mtr | Lb/ft | |
1/2" | 0.840 | 21 | 0.109 | 2.769 | 40 STD | 1.268 | 0.851 |
0.147 | 3.734 | 80 STD | 1.621 | 1.088 | |||
3/4" | 1.050 | 27 | 0.113 | 2.870 | 40 STD | 1.684 | 1.131 |
0.154 | 3.912 | 80 STD | 2.195 | 1.474 | |||
1" | 1.315 | 33 | 0.133 | 3.378 | 40 STD | 2.501 | 1.679 |
0.179 | 4.547 | 80 STD | 3.325 | 2.172 | |||
1 1/4" | 1.660 | 42 | 0.140 | 3.556 | 40 STD | 3.385 | 2.273 |
0.191 | 4.851 | 80 STD | 4.464 | 2.997 | |||
1 1/2" | 1.900 | 48 | 0.145 | 3.683 | 40 STD | 4.048 | 2.718 |
0.200 | 5.080 | 80 STD | 5.409 | 3.361 | |||
2" | 2.375 | 60 | 0.154 | 3.912 | 40 STD | 5.441 | 3.653 |
0.218 | 5.537 | 80 STD | 7.480 | 5.022 | |||
2 1/2" | 2.875 | 73 | 0.203 | 5.516 | 40 STD | 8.629 | 5.793 |
0.276 | 7.010 | 80 STD | 11.411 | 7.661 | |||
3" | 3.500 | 89 | 0.216 | 5.486 | 40 STD | 11.284 | 7.576 |
0.300 | 7.620 | 80 STD | 15.272 | 10.253 | |||
4" | 4.500 | 114 | 0.237 | 6.020 | 16.073 | 10.790 | |
0.337 | 8.560 | 22.318 | 14.983 | ||||
6" | 6.625 | 168 | 0.188 | 4.775 | 19.252 | 12.924 | |
0.203 | 5.516 | 20.739 | 13.923 | ||||
0.219 | 5.563 | 22.318 | 14.983 | ||||
0.250 | 6.350 | 25.354 | 17.021 | ||||
0.280 | 7.112 | 40 STD | 58.263 | 18.974 | |||
0.312 | 7.925 | 31.334 | 21.036 | ||||
0.375 | 9.525 | 37.285 | 25.031 | ||||
0.432 | 10.973 | 80 XHY | 42.561 | 28.573 | |||
0.500 | 12.700 | 48.719 | 32.708 | ||||
8" | 8.625 | 219 | 0.188 | 4.775 | 25.233 | 16.940 | |
0.203 | 5.156 | 27.198 | 18.259 | ||||
0.219 | 5.563 | 29.286 | 19.661 | ||||
0.250 | 6.350 | 20 | 33.308 | 22.361 | |||
0.277 | 7.036 | 30 | 36.786 | 24.696 | |||
0.322 | 8.179 | 40 | 42.352 | 28.554 | |||
0.375 | 9.525 | 49.216 | 33.041 | ||||
0.406 | 10.312 | 60 | 53.085 | 35.638 | |||
0.500 | 12.700 | 80 XHY | 64.627 | 43.388 | |||
10" | 10.750 | 273 | 0.188 | 4.775 | 31.588 | 21.207 | |
0.219 | 5.563 | 36.689 | 24.631 | ||||
0.250 | 6.350 | 20 | 41.759 | 28.035 | |||
0.307 | 7.798 | 30 | 51.002 | 34.240 | |||
0.344 | 8.738 | 56.946 | 38.231 | ||||
0.365 | 9.271 | 40 STD | 63.301 | 40.483 | |||
0.438 | 11.125 | 71.852 | 48.238 | ||||
0.500 | 12.700 | 60 XHY | 81.530 | 54.735 | |||
0.594 | 15.088 | 80 | 95.969 | 64.429 | |||
12" | 12.750 | 324 | 0.188 | 4.775 | 37.570 | 25.222 | |
0.219 | 5.563 | 43.657 | 29.309 | ||||
0.250 | 6.350 | 49.713 | 33.375 | ||||
0.281 | 7.137 | 55.739 | 37.420 | ||||
0.312 | 7.925 | 61.735 | 41.445 | ||||
0.375 | 9.525 | 73.824 | 49.562 | ||||
0.406 | 10.312 | 79.727 | 53.525 | ||||
0.500 | 12.700 | 97.438 | 65.415 | ||||
0.562 | 14.275 | 108.966 | 73.154 | ||||
14" | 14.000 | 356 | 0.188 | 4.775 | 41.308 | 27.732 | |
0.219 | 5.563 | 48.012 | 32.233 | ||||
0.250 | 6.350 | 20 | 54.685 | 36.713 | |||
0.281 | 7.137 | 61.327 | 41.172 | ||||
0.312 | 7.925 | 67.939 | 45.611 | ||||
0.375 | 9.525 | STD | 81.281 | 54.568 | |||
0.438 | 11.125 | 40 | 94.498 | 63.441 | |||
0.500 | 12.700 | XHY | 107.381 | 72.090 | |||
0.625 | 15.875 | 132.983 | 89.278 | ||||
16” | 16.000 | 406 | 0.188 | 4.775 | 47.290 | 21.748 | |
0.219 | 5.563 | 54.980 | 36.910 | ||||
0.250 | 6.350 | 10 | 62.639 | 42.053 | |||
0.281 | 7.137 | 70.268 | 47.174 | ||||
0.312 | 7.925 | 20 | 77.866 | 52.275 | |||
0.344 | 8.738 | 85.677 | 57.519 | ||||
0.375 | 9.525 | 30 STD |
93.213 | 62.578 | |||
0.438 | 11.125 | 108.433 | 72.797 | ||||
0.500 | 12.700 | 40 XHY |
123.289 | 82.770 | |||
18" | 18.000 | 457 | 0.219 | 5.563 | 61.948 | 41.588 | |
0.250 | 6.350 | 70.593 | 47.393 | ||||
0.281 | 7.137 | 79.208 | 53.176 | ||||
0.312 | 7.925 | 20 | 87.792 | 58.939 | |||
0.375 | 9.525 | STD | 105.144 | 70.588 | |||
0.438 | 11.125 | 30 | 122.369 | 82.152 | |||
0.500 | 12.700 | XHY | 139.198 | 93.450 | |||
0.562 | 14.275 | 40 | 155.904 | 104.666 | |||
0.625 | 15.875 | 172.754 | 115.978 | ||||
20" | 20.000 | 508 | 0.250 | 6.350 | 78.547 | 52.733 | |
0.282 | 7.163 | 88.458 | 59.386 | ||||
0.312 | 7.925 | 97.719 | 65.604 | ||||
0.375 | 9.525 | 20 STD | 117.075 | 78.598 | |||
0.438 | 11.125 | 136.305 | 91.508 | ||||
0.500 | 12.700 | 30 XHY | 155.106 | 104.130 | |||
0.594 | 15.088 | 40 | 183.378 | 123.110 | |||
0.625 | 15.875 | 192.640 | 129.328 | ||||
0.688 | 17.475 | 211.368 | 141.901 | ||||
24" | 24.000 | 610 | 0.250 | 6.350 | 94.456 | 63.413 | |
0.281 | 7.137 | 106.029 | 71.183 | ||||
0.312 | 7.925 | 117.573 | 18.932 | ||||
0.375 | 9.525 | 20 STD | 140.938 | 64.618 | |||
0.438 | 11.125 | 164.176 | 110.219 | ||||
0.500 | 12.700 | XHY | 186.923 | 125.490 | |||
0.625 | 15.875 | 232.410 | 156.028 | ||||
0.688 | 17.475 | 40 | 255.148 | 171.293 | |||
0.750 | 19.050 | 277.401 | 186.233 | ||||
30" | 30.000 | 762 | 0.250 | 6.350 | 118.318 | 79.433 | |
0.281 | 7.137 | 132.851 | 89.189 | ||||
0.312 | 7.925 | 10 | 147.353 | 98.925 | |||
0.375 | 9.525 | STD | 176.731 | 118.648 | |||
0.438 | 11.125 | 205.983 | 138.286 | ||||
0.500 | 12.700 | 20 XHY | 234.647 | 157.530 | |||
0.625 | 15.875 | 30 | 292.066 | 196.078 | |||
0.688 | 17.475 | 320.817 | 215.380 | ||||
0.750 | 19.050 | 348.988 | 234.293 | ||||
36" | 36.000 | 914 | 0.250 | 6.350 | 142.180 | 95.453 | |
0.281 | 7.137 | 159.672 | 107.196 | ||||
0.312 | 7.925 | 10 | 177.133 | 118.918 | |||
0.375 | 9.525 | STD | 215.525 | 142.678 | |||
0.438 | 11.125 | 247.790 | 166.353 | ||||
0.500 | 12.700 | 20 XHY | 282.372 | 198.570 | |||
0.625 | 15.875 | 351.723 | 236.128 | ||||
0.688 |
17.475 | 386.487 | 259.467 | ||||
0.750 |
19.050 | 420.576 | 282.353 | ||||
42" | 42.000 | 1067 | 0.312 | 7.925 | 206.914 | 138.911 | |
0.375 | 9.525 | STD | 248.319 | 166.708 | |||
0.500 | 12.700 | XHY | 33.097 | 221.610 | |||
0.750 | 19.050 | 492.163 | 330.413 | ||||
48" | 48.000 | 1219 | 0.375 | 9.525 | STD | 284.112 | 190.738 |
0.438 | 11.125 | 331.404 | 222.487 | ||||
0.500 | 12.700 | XHY | 377.822 | 253.650 | |||
0.750 | 19.050 | 563.750 | 378.473 | ||||
0.875 | 22.225 | 655.969 | 440.383 |
Element | Min | Max |
---|---|---|
C | - | 0.2 |
Mn | - | 2 |
Ni | 23 | 28 |
Cr | 19 | 23 |
S | - | 0.3 |
Mo | 4 | 5 |
N | - | 0.1 |
Cu | 1 | 2 |
P | - | 0.03 |
Si | - | 0.7 |
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) |
Specific Heat (0-100°C) | 450 | J.kg-1.°K-1 |
Thermal Conductivity | 11.5 | W.m -1.°K-1 |
Thermal Expansion | 15.8 | mm/m/°C |
Modulus Elasticity | 190 | GPa |
Electrical Resistivity | 9.52 | μohm/cm |
Density | 7.95 | g/cm3 |
Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
BS | En | No | Name | ||||
904L | N08904 | 904S13 | X1NiCrMoCu25-20-5 | 1.4539 | – | – | SUS 890L |