ASTM A213 ASME SA 213 UNS N08094 904L Stainless Steel TubingASTM A213 ASTM B677 N08904 904L Stainless Steel Tubing is a non-stabilised low carbon high alloy austeniticstainless steel pipe. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid,Phosphoric Acid, Organic Acid, Inorganic Acid.. It is also highly resistant to chloride attack both pitting / crevice corrosion and stress corrosion cracking. ASME SA213 904L N08904 Stainless steel tubing is designed for harsh environments of the corrosion conditions. Initially stainless steel is developed for corrosion resistance in sulfuric acid. This feature has been verified that is very successful after many years of practical application. Now, 904L in many countries have been standardized. As the high chromium, nickel, molybdenum and copper content, 904L has excellent corrosion resistance. Such as the uniform corrosion, especially in dilute sulfuric acid. 904L Stainless Steel Other properties included: This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperature. 904L Stainless Steel Tubing does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205), so it is used less commonly than in the past. These properties are specified for flat rolled product (plate, sheet and coil) in ASTM B625. Similar but not necessarily identical properties are specified for other products such as pipe, tube and bar in their respective specifications. 904L Stainless Steel Pipe Corrosion ResistanceAlthough originally developed for its resistance to sulphuric acid it also has a very high resistance to a wide range of environments. A PRE of 35 indicates that the material has good resistance to warm sea water and other high chloride environments. High nickel content results in a much better resistance to stress corrosion cracking than the standard austenitic grades. Copper adds resistance to sulphuric and other reducing acids, particularly in the very aggressive “mid concentration” range. In most environments 904L has a corrosion performance intermediate between the standard austenitic grade 316L and the very highly alloyed 6% molybdenum and similar “super austenitic” grades. In aggressive nitric acid 904L Stainless Steel Tubing has less resistance than molybdenum-free grades such as 304L and 310L. For maximum stress corrosion cracking resistance in critical environments the steel should be solution treated after cold work. 904L Stainless Steel Pipe Heat ResistanceGood resistance to oxidation, but like other highly alloyed grades suffers from structural instability (precipitation of brittle phases such as sigma) at elevated temperatures. 904L should not be used above about 400°C. 904L Stainless Steel Tubing Heat TreatmentSolution Treatment (Annealing) – heat to 1090-1175°C and cool rapidly. This grade cannot be hardened by thermal treatment. 904L Stainless Steel Tubing Welding904L can be successfully welded by all standard methods. Care needs to be taken as this grade solidifies fully austenitic, so is susceptible to hot cracking, particularly in constrained weldments. No pre-heat should be used and in most cases post weld heat treatment is also not required. AS 1554.6 pre-qualifies Grade 904L rods and electrodes for welding of 904L. 904L Stainless Steel Pipe Fabrication904L is a high purity, low sulphur grade, and as such will not machine well. Despite this the grade can be machined using standard techniques. Bending to a small radius is readily carried out. In most cases this is performed cold. Subsequent annealing is generally not required, although it should be considered if the fabrication is to be used in an environment where severe stress corrosion cracking conditions are anticipated. 904L Stainless Steel Tubing ApplicationsTypical applications include: · Processing plant for sulphuric, phosphoric and acetic acids · Pulp and paper processing · Components in gas scrubbing plants · Seawater cooling equipment · Oil refinery components · Wires in electrostatic precipitators ASTM A213 904L N08904 1.4539 Stainless Steel Chemical Composition Table 1.Composition ranges for 904L N08904 1.4539 Stainless Steel According to ASTM A213 /ASTM A312 and EN 10216-5
904L N08904 Stainless Steel Tubing Mechanical Properties Table 2.Mechanical properties of 904L N08904 Stainless Steel.
904L N08904 Stainless Steel Tubing Physical Properties Table 3. Typical physical properties for 904L N08904 stainless steel tube.
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Inch to mm Chart
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Inches
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Decimal
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Millimeters
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1/16″
|
.0625
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1.59 mm
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1/8″
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.1250
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3.18 mm
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3/16″
|
.1875
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4.76 mm
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1/4″
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.2500
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6.35 mm
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5/16″
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.3125
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7.94 mm
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3/8″
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.3750
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9.53 mm
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7/16″
|
.4375
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11.11 mm
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1/2″
|
.5000
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12.70 mm
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|
9/16″
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.5625
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14.29 mm
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5/8″
|
.6250
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15.88 mm
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11/16″
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.6875
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17.46 mm
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3/4″
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.7500
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19.05 mm
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13/16″
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.8125
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20.64 mm
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7/8″
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.8750
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22.23 mm
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15/16″
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.9375
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23.81 mm
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1″
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1.00
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25.40 mm
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Nominal Pipe Size ⅛ to Nominal Pipe Size 3½
| Nominal Pipe Size | DN mm |
OD inches (mm) |
Wall Thickness inches (mm) |
|||||||
| SCH 5 | SCH 10 | SCH 30 | SCH 40/STD | SCH 80 | SCH 120 | SCH 160 | XXS | |||
| ⅛ | 6 | 0.405 in (10.29 mm) | 0.035 in (0.889 mm) | 0.049 in (1.245 mm) | 0.057 in (1.448 mm) | 0.068 in (1.727 mm) | 0.095 in (2.413 mm) | — | — | — |
| ¼ | 8 | 0.540 in (13.72 mm) | 0.049 in (1.245 mm) | 0.065 in (1.651 mm) | 0.073 in (1.854 mm) | 0.088 in (2.235 mm) | 0.119 in (3.023 mm) | — | — | — |
| ⅜ | 10 | 0.675 in (17.15 mm) | 0.049 in (1.245 mm) | 0.065 in (1.651 mm) | 0.073 in (1.854 mm) | 0.091 in (2.311 mm) | 0.126 in (3.200 mm) | — | — | — |
| ½ | 15 | 0.840 in (21.34 mm) | 0.065 in (1.651 mm) | 0.083 in (2.108 mm) | — | 0.109 in (2.769 mm) | 0.147 in (3.734 mm) | — | 4.78mm | 0.294 in (7.47 mm) |
| ¾ | 20 | 1.050 in (26.67 mm) | 0.065 in (1.651 mm) | 0.083 in (2.108 mm) | 2.41mm | 0.113 in (2.870 mm) | 0.154 in (3.912 mm) | — | 5.56mm | 0.308 in (7.823 mm) |
| 1 | 25 | 1.315 in (33.40 mm) | 0.065 in (1.651 mm) | 0.109 in (2.769 mm) | 2.90mm | 0.133 in (3.378 mm) | 0.179 in (4.547 mm) | — | 6.35mm | 0.358 in (9.093 mm) |
| 1¼ | 32 | 1.660 in (42.16 mm) | 0.065 in (1.651 mm) | 0.109 in (2.769 mm) | 0.117 in (2.972 mm) | 0.140 in (3.556 mm) | 0.191 in (4.851 mm) | — | 6.35mm | 0.382 in (9.703 mm) |
| 1½ | 40 | 1.900 in (48.26 mm) | 0.065 in (1.651 mm) | 0.109 in (2.769 mm) | 0.125 in (3.175 mm) | 0.145 in (3.683 mm) | 0.200 in (5.080 mm) | — | 7.14mm | 0.400 in (10.160 mm) |
| 2 | 50 | 2.375 in (60.33 mm) | 0.065 in (1.651 mm) | 0.109 in (2.769 mm) | 0.125 in (3.175 mm) | 0.154 in (3.912 mm) | 0.218 in (5.537 mm) | 0.250 in (6.350 mm) | 8.74mm | 0.436 in (11.074 mm) |
| 2½ | 65 | 2.875 in (73.02 mm) | 0.083 in (2.108 mm) | 0.120 in (3.048 mm) | 0.188 in (4.775 mm) | 0.203 in (5.156 mm) | 0.276 in (7.010 mm) | 0.300 in (7.620 mm) | 0.344 in (8.738 mm) | 0.552 in (14.021 mm) |
| 3 | 80 | 3.500 in (88.90 mm) | 0.083 in (2.108 mm) | 0.120 in (3.048 mm) | 0.188 in (4.775 mm) | 0.216 in (5.486 mm) | 0.300 in (7.620 mm) | 0.350 in (8.890 mm) | 0.438 in (11.13 mm) | 0.600 in (15.240 mm) |
| 3½ | 90 | 4.000 in (101.60 mm) | 0.083 in (2.108 mm) | 0.120 in (3.048 mm) | 0.188 in (4.775 mm) | 0.226 in (5.740 mm) | 0.318 in (8.077 mm) | — | — | 0.636 in (16.154 mm) |
Nominal Pipe Size 4 to Nominal Pipe Size 9
| NPS | DN mm |
OD inches (mm) |
Wall thickness inches (mm) |
||||||||||
| SCH 5 | SCH 10 | SCH 20 | SCH 30 | SCH 40/STD | SCH 60 | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | |||
| 4 | 100 | 4.500 in (114.30 mm) | 0.083 in (2.108 mm) | 0.120 in (3. 048 mm) |
— | 0.188 in (4. 775 mm) |
0.237 in (6.02 mm) | 0.281 in (7.137 mm) |
0.337 in (8.560 mm) | — | 0.437 in (11.13 mm) |
— | 0.531 in (13.49 mm) |
| 4½ | 115 | 5.000 in (127.00 mm) | — | — | — | — | 0.247 in (6.274 mm) | — | 0.355 in (9.017 mm) | — | — | — | — |
| 5 | 125 | 5.563 in (141.30 mm) | 0.109 in (2.769 mm) | 0.134 in (3.404 mm) |
— | — | 0.258 in (6.553 mm) | — | 0.375 in (9.525 mm) | — | 0.500 in (12.70 mm) |
— | 0.625 in (15.875 mm) |
| 6 | 150 | 6.625 in (168.27 mm) | 0.109 in (2.769 mm) | 0.134 in (3.404 mm) |
— | — | 0.280 in (7.112 mm) | — | 0.432 in (10.973 mm) | — | 0.562 in (14.27 mm) |
— | 0.719 in (18.263 mm) |
| 8 | 200 | 8.625 in (219.08 mm) | 0.109 in (2.769 mm) | 0.148 in (3.759 mm) |
0.250 in (6. 35 mm) |
0.277 in (7. 036 mm) |
0.322 in (8.179 mm) | 0.406 in (10. 312 mm) |
0.500 in (12.70 mm) | 0.593 in (15. 09 mm) |
0.718 in (18.2 6mm) |
0.812 in (20. 62mm) |
0.906 in (23.01 mm) |
Nominal Pipe Size 10 to Nominal Pipe Size 24
| Nominal Pipe Size | DN mm |
OD inches (mm) |
Wall Thickness inches (mm) |
|||||
| SCH 5s | SCH 5 | SCH 10s | SCH 10 | SCH 20 | SCH 30 | |||
| 10 | 250 | 10.75 in (273.05 mm) | 0.134 in (3.404 mm) | 0.134 in (3.404 mm) | 0.165 in (4.191 mm) | 0.165 in (4.191 mm) | 0.250 in (6.350 mm) | 0.307 in (7.798 mm) |
| 12 | 300 | 12.75 in (323.85 mm) | 0.156 in (3.962 mm) | 0.165 in (4.191 mm) | 0.180 in (4.572 mm) | 0.180 in (4.572 mm) | 0.250 in (6.350 mm) | 0.330 in (8.382 mm) |
| 14 | 350 | 14.00 in (355.60 mm) | 0.156 in (3.962 mm) | 0.156 in (3.962 mm) | 0.188 in (4.775 mm) | 0.250 in (6.350 mm) | 0.312 in (7.925 mm) | 0.375 in (9.525 mm) |
| 16 | 400 | 16.00 in (406.40 mm) | 0.165 in (4.191 mm) | 0.165 in (4.191 mm) | 0.188 in (4.775 mm) | 0.250 in (6.350 mm) | 0.312 in (7.925 mm) | 0.375 in (9.525 mm) |
| 18 | 450 | 18.00 in (457.20 mm) | 0.165 in (4.191 mm) | 0.165 in (4.191 mm) | 0.188 in (4.775 mm) | 0.250 in (6.350 mm) | 0.312 in (7.925 mm) | 0.437 in (11.100 mm) |
| 20 | 500 | 20.00 in (508.00 mm) | 0.188 in (4.775 mm) | 0.188 in (4.775 mm) | 0.218 in (5.537 mm) | 0.250 in (6.350 mm) | 0.375 in (9.525 mm) | 0.500 in (12.700 mm) |
| 24 | 600 | 24.00 in (609.60 mm) | 0.218 in (5.537 mm) | 0.218 in (5.537 mm) | 0.250 in (6.350 mm) | 0.250 in (6.350 mm) | 0.375 in (9.525 mm) | 0.562 in (14.275 mm) |
| Nominal Pipe Size | Wall thickness inches (mm) |
||||||||
| SCH 40s | SCH 40 | SCH 60 | SCH 80s | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | |
| 10 | 0.365 in (9.271 mm) | 0.365 in (9.271 mm) | 0.500 in (12.700 mm) | 0.500 in (12.700 mm) | 0.593 in (15.062 mm) | 0.718 in (18.237 mm) | 0.843 in (21.412 mm) | 1.000 in (25.400 mm) | 1.125 in (28.575 mm) |
| 12 | 0.375 in (9.525 mm) | 0.406 in (10.312 mm) | 0.500 in (12.700 mm) | 0.500 in (12.700 mm) | 0.687 in (17.450 mm) | 0.843 in (21.412 mm) | 1.000 in (25.400 mm) | 1.125 in (28.575 mm) | 1.312 in (33.325 mm) |
| 14 | 0.375 in (9.525 mm) | 0.437 in (11.100 mm) | 0.593 in (15.062 mm) | 0.500 in (12.700 mm) | 0.750 in (19.050 mm) | 0.937 in (23.800 mm) | 1.093 in (27.762 mm) | 1.250 in (31.750 mm) | 1.406 in (35.712 mm) |
| 16 | 0.375 in (9.525 mm) | 0.500 in (12.700 mm) | 0.656 in (16.662 mm) | 0.500 in (12.700 mm) | 0.843 in (21.412 mm) | 1.031 in (26.187 mm) | 1.218 in (30.937 mm) | 1.437 in (36.500 mm) | 1.593 in (40.462 mm) |
| 18 | 0.375 in (9.525 mm) | 0.562 in (14.275 mm) | 0.750 in (19.050 mm) | 0.500 in (12.700 mm) | 0.937 in (23.800 mm) | 1.156 in (29.362 mm) | 1.375 in (34.925 mm) | 1.562 in (39.675 mm) | 1.781 in (45.237 mm) |
| 20 | 0.375 in (9.525 mm) | 0.593 in (15.062 mm) | 0.812 in (20.625 mm) | 0.500 in (12.700 mm) | 1.031 in (26.187 mm) | 1.280 in (32.512 mm) | 1.500 in (38.100 mm) | 1.750 in (44.450 mm) | 1.968 in (49.987 mm) |
| 24 | 0.375 in (9.525 mm) | 0.687 in (17.450 mm) | 0.968 in (24.587 mm) | 0.500 in (12.700 mm) | 1.218 in (30.937 mm) | 1.531 in (38.887 mm) | 1.812 in (46.025 mm) | 2.062 in (52.375 mm) | 2.343 in (59.512 mm) |
