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Astm A790 UNS S31803 ASTM A789 UNS S31803 Duplex Pipe Tube
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Astm A790 / A789 UNS S31803 Duplex Pipe Tube

$4,850.00

ASTM A790 / A789 Uns S31803 duplex pipe tube is a duplex stainless steel tube with good chloride stress resistance, ASTM A790 Uns s31803 contains 21% Chrome 4.5% nickel and 2.5% molybdenum.Kcm Special Steel will supply excellent ASTM A789 UNS S31803 duplex tube and pipe with seamless and welded types.

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Description

Description

ASTM A790 / A789 UNS S31803 DUPLEX PIPE TUBE BRIEF INTRODUCTION

ASTM A790 Uns s31803 / ASTM A789 Uns S31803 duplex pipe tube is a stainless steel tube with good chloride stress resistance, Uns s31803 contains 21% Chrome 4.5% nickel and 2.5% molybdenum.

Uns S31803 duplex pipe tube is duplex stainless steel pipe and a medium alloy duplex stainless steel with good chloride stress resistance. Medium alloy type – the representative grade is UNS S31803 (22Cr-5Ni-3Mo-0.15N); S31803 duplex steel pipe is in three kinds of dual phase steel (2205 duplex stainless steel pipe, 2507 duplex stainless steel pipe, S31803 duplex stainless steel seamless tube) is the most widely used.

Name ASTM A790 / A789 UNS S31803 Duplex pipe tube     Material: Stainless steel

Properties: Good chloride resistance stress Representative   grade: UNS S31803 / UNS S32205 / SAF 2205

Brand: KCM Special Steel

ASTM A790 Is Standard for Seamless and Welded Ferritic-Austenitic Stainless Steel Pipe

ASTM A790 UNS S31803 Pipe Scope of application

1.1 This specification2 covers seamless and straight-seam welded ferritic/austenitic steel pipe intended for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.

1.2 Optional supplementary requirements are provided for pipe when a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and, when desired, one or more of these may be specified in the order.

1.3 Appendix X1 of this specification lists the dimensions of welded and seamless stainless steel pipe as shown in ANSI B36.19. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the M designation of this specification is specified in the order.

NOTE 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.

What Is ASTM A790 UNS S31803 Pipe?

ASTM A790 UNS S31803 Pipe & tube is a duplex stainless steel. 22% chromium duplex ( austenitic/ferritic ) steel ( type 2205 / UNS S32205 ) with moderate to high strength and good resistance to common corrosion/stress, corrosion/cracking.

The alloy of ASTM A790 UNS S31803 Pipe & tube is resistant to chloride environments and sulfide stress corrosion and is approximately twice as strong as standard austenitic stainless steels. This alloy can be successfully used as a replacement for 300 series austenitic stainless steels when higher mechanical strength/lower weight is required. The F51 is easy to weld with many standard arc welding equipment, but is not recommended for oxy-ethylene block welding due to the potential for carburization of the weld metal.

ASTM A790 UNS S31803 Pipe & tube Executive Standard

Main components: carbon (C)≤0.03, manganese (Mn)≤1.2, nickel (Ni) 6.0～8.0, silicon (Si)≤0.8, chromium (Cr) 24.0～26.0, copper (Cu) ≤0.5, molybdenum (Mo) )3.0～5.0, Nitrogen (N) 0.24～0.32

Physical Properties: 2205 Duplex Steel Density: 7.98g/cm3, Melting Point: 1300-1390 ℃, Magnetic Properties: None

Heat treatment: heat preservation between 1000-1050 ℃ for 1-2 hours, rapid air cooling or water cooling.

ASTM A790 UNS S31803 Pipe & tube Mechanical properties: Tensile strength: σb≥795Mpa, solid solution yield strength σb≥550Mpa: Elongation: δ≥15%, hardness ≤310 (HB)

ASTM A790 UNS S31803 PIPE & TUBE (foreign name:UNS S31803 stainless steel pipe) is an ultra-low carbon duplex stainless acid-resistant steel with excellent resistance to pitting and crevice corrosion. At the same time, nitrogen is a strong element that forms and stabilizes austenite. Even if it is welded or heated at high temperature, it can ensure that a certain amount of austenite exists in the structure. Single-phase ferrite. The two-phase ratio is not sensitive to changes in heating temperature.

ASTM A789 Is Standard for Seamless and Welded Ferritic / Austenitic Stainless Steel Tubing

Scope of application

1.1x00a0;This specification2 covers grades of average wall thickness, or, if specified on the order, minimum wall thickness, of stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.

1.2x00a0;The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Within the text, the SI units are shown in brackets. The inch-pound units shall apply unless the M designation of this specification is specified in the order.

Thickness Chart Of ASTM A789 / ASTM A790 UNS S31803 Pipes

NPS Outside Diameter Wall Thickness 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

ASTM A790 UNS S31803 duplex pipe tube products scope

  1. ASTM A790 UNS S31803 Duplex stainless steel pipe
  2. SA789 UNS S31803 Duplex pipe seamless
  3. ASTM A790 UNS S31803 Duplex tube seamless
  4. S A790 UNS S31803 Duplex pipe welded / welding
  5. ASTM A790 UNS S31803 Duplex tube welded / welding
  6. SA789 UNS S31803 Duplex pipe welded / welding
  7. ASTM A789 UNS S31803 Duplex tube welded / welding
  8. s31803 Duplex pipe fittings
  9.  31803 Duplex pipe elbow
  10.  s31803 Duplex pipe reducer
  11.  31803 Duplex pipe tee
  12.  s31803 Duplex pipe cap
  13. 31803 Duplex pipe flange

ASTM A790 / A789 Uns S31803 duplex pipe tube chemical composition

C≦0.030;Si≦1.00;Mn≦2.00;P≦0.030;S：0.020;Ni:4.50~6.50;Cr:21.00~23.00;Mo:2.50~3.50;N:0.08~0.20

ASTM A790 Uns S31803 duplex pipe tube features

PREN value 32 to 33
The corrosion resistance of the medium alloy type UNS S31803 is between AISI 316L and 6% Mo+N austenitic stainless steel.
Yield strength is about 2 times stronger than 18-8 austenitic stainless steel.

ASTM A790 / A789 Uns S31803 duplex pipe tube application

  • Neutral Chloride Environment
  • Refining Industry
  • Petrochemical and Chemical Industry
  • Chemical Industry Conveying Pipeline
  • Oil & Gas Industry
  • Pulp and Paper Industry
  • Fertilizer Industry
  • Urea Industry
  • Phosphate Fertilizer Industry
  • Seawater Environment
  • Energy and Environmental Protection Industry
  • Light Industry And food industry
  • food and pharmaceutical industry equipment
  • high-strength structural parts
Additional information

Additional information

Weight 1000 kg
Dimensions 6000 × 7000 × 7000 mm