ASTM A789 Duplex Stainless Hlau Tubes
ASTM A789 / A789M (2)
Standard Specification rau Seamless thiab Welded Ferritic / Austenitic Stainless Hlau Tubing rau General Service
ASTM A789 Alloy 2205 UNS S32205 / S31803 Seamless Tubes, yog 22% chromium, 3% molybdenum, 5-6% npib tsib xee, nitrogen alloyed Duplex Stainless Steel Pipe nrog siab dav dav, thaj chaw, thiab kev ntxhov siab corrosion kuj muaj zog ntxiv rau lub zog siab thiab zoo heev cuam tshuam toughness.
ASTM A789 ASME SA 789 Seamless Tubes Nta
- Superior tsis kam mus rau dav dav thiab hauv zos corrosion, tshwj xeeb tshaj yog rau kev ntxhov siab corrosion, pitting corrosion, crevice corrosion, corrosion qaug zog thiab puas & corrosion.
- Zoo weldability
- Zoo mechanical zog
- Zoo heev intergranular corrosion kuj
- High nqi-zoo, lub neej ntev
ASTM A789 Duplex Stainless Hlau Tubes Cov Khoom Siv Tshuaj:
| UNS Lub npe |
Kev sib xyaw,% | ||||||||||
| C Max |
Mn max |
P max |
S max |
Si max |
Ni | Cr | Mo | N | Cu | Lwm tus | |
| S31803 | 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 21.0-23.0 | 2.5-3.5 | 0.08-0.20 | . . . | . . . |
| S32205 | 0.03 | 2 | 0.03 | 0.02 | 1 | 4.5-6.5 | 22-23 | 3.0-3.5 | 0.14-0.20 | . . . | . . . |
| S31500 | 0.03 | 1.20-2.00 | 0.03 | 0.03 | 1.40-2.0 | 4.3-5.2 | 18-19 | 2.5-3.0 | 0.05-0.10 | . . . | . . . |
| S32550 | 0.04 | 1.5 | 0.04 | 0.03 | 1 | 4.5-6.5 | 24-27 | 2.9-3.9 | 0.10-0.25 | 1.50-2.50 | . . . |
| S31200 | 0.03 | 2 | 0.045 | 0.03 | 1 | 5.5-6.5 | 24-26 | 1.-2.0 | 0.14-0.20 | . . . | . . . |
| S31260 | 0.03 | 1 | 0.03 | 0.03 | 0.75 | 5.5-7.5 | 24-26 | 2.5-3.5 | 0.10-0.30 | 0.20-0.80 | W 0.10-0.50 |
| S32001 | 0.03 | 4.0-6.0 | 0.04 | 0.03 | 1 | 1.0-3.0 | 19.5-21.5 | 0.6 | 0.05-0.17 | 1 00 max | . . . |
| S32304 | 0.03 | 2.5 | 0.04 | 0.04 | 1 | 3.0-5.5 | 21.5-24.5 | 0.05-0.60 | 0.05-0.20 | 0.05-0.60 | . . . |
| S32750 | 0.03 | 1.2 | 0.035 | 0.02 | 0.8 | 6.0-8.0 | 24-26 | 3.0-5.0 | 0.24-0.32 | 0.50 max | . . . |
| S32760 | 0.05 | 1 | 0.03 | 0.01 | 1 | 6.0-8.0 | 24-26 | 3.0-4.0 | 0.20-0.30 | 0.50-1.00 | W 0.50-1.00 |
| S32950 | 0.03 | 2 | 0.035 | 0.01 | 0.6 | 3.5-5.2 | 26-29 | 1.0-2.5 | 0.15-0.35 | . . . | . . . |
| S32520 | 0.03 | 1.5 | 0.035 | 0.02 | 0.8 | 5.5-8.0 | 23-25 | 3.0-5.0 | 0.20-0.35 | 0.8 | . . . |
Kev kho cua sov yuav tsum tau
| UNS npe | Kub | Quench |
| S31803 | 1870-2010 degree F [1020-1100 degree] | Kev txias sai sai hauv huab cua lossis dej |
| S32205 | 1870-2010 degree F [1020-1100 degree] | Kev txias sai sai hauv huab cua lossis dej |
| S31500 | 1800-1900 degree F [980-1040 degree] | Kev txias sai sai hauv huab cua lossis dej |
| S32550 | 1900 degree F [1040 degree] min | Kev txias sai sai hauv huab cua lossis dej |
| S31200 | 1920-2010 degree F [1050-1100 degree] | Kev txias sai sai hauv dej |
| S31260 | 1870-2010 degree F [1020-1100 degree] | Kev txias sai sai hauv dej |
| S32001 | 1800-1950 degree F [982-1066 degree] | Kev txias sai sai hauv huab cua lossis dej |
| S32304 | 1700-1920 degree F [925-1050 degree] | Kev txias sai sai hauv huab cua lossis dej |
| S32750 | 1880-2060 degree F [1025-1125 degree] | Kev txias sai sai hauv huab cua lossis dej |
| S32760 | 2010-2085 degree F [1100-1140 degree] | Kev txias sai sai hauv huab cua lossis dej |
| S32950 | 1820-1880 degree F [990-1025 degree] | Kev txias sai sai hauv dej |
| S32520 | 1975-2050 degree F [1080-1120 degree] | Kev txias sai sai hauv huab cua lossis dej |
Mechanical cwj pwm Tensile Requirements
| Qib | Tensile zog, min, ksi [MPa] | Yield zog, min ksi [MPa] | Elongation hauv 2 nti., lossis 50mm, min,% | Hardness, Max Brinell |
| S31803 | 90 [620] | 65 [450] | 25 | 290 |
| S32205 | 95 [655] | 70 [485] | 25 | 290 |
| S31500 | 92 [630] | 64 [440] | 30 | 290 |
| S32550 | 110 [760] | 80 [550] | 15 | 297 |
| S31200 | 100 [690] | 65 [450] | 25 | 280 |
| S31260 | 100 [690] | 65 [450] | 25 | 290 |
| S32001 | 90 [620] | 65 [450] | 25 | 290 |
| S32304 | 100 [690] | 65 [450] | 25 | 290 |
| S32750 | 116 [800] | 80 [550] | 15 | 310 |
| S32760 | 109 [750] | 80 [550] | 25 | 300 |
| S32950 | 100 [690] | 70 [480] | 20 | 290 |
| S32520 | 112 [770] | 80 [550] | 25 | 310 |
ASTM Referenced Standards
- A 450 / A 450M Specification rau General yuav tsum tau rau carbon, Ferritic Alloy, thiab Austenitic alloy steel hlab
- A 480 / A 480M Specification rau cov kev cai dav dav rau cov pav ca-dov stainless thiab kub-resisting steel phaj, ntawv, thiab sawb
- A 941 Terminology Hais txog Hlau, Stainless Hlau, Lwm Yam Alloys, thiab Ferroalloys
- E 527 Xyaum rau cov lej lej thiab cov alloys (UNS)
ASTM A789 UNS S31803 Kev Xeem
Flange Test (rau welded raj)
Ib qho kev sim yuav tsum tau ua rau ntawm cov qauv ntawm ib kawg ntawm ib lub raj los ntawm txhua qhov ntau ntawm cov raj tiav.
Flaring Test
Ib qho kev sim yuav tsum tau ua rau ntawm cov qauv ntawm ib kawg ntawm ib lub raj los ntawm txhua qhov ntau ntawm cov raj tiav. Qhov tsawg kawg nkaus nthuav dav ntawm sab hauv txoj kab uas hla yuav tsum yog 10%
Rov qab Flattening Test
Rau cov welded raj, ib qho rov qab flattening xeem yuav tsum tau ua rau ntawm ib tug qauv ntawm txhua 1500Ft los yog 450m ntawm tiav tubing.
ASME SA 789 Hydrostatic lossis Nondestructive Testing
Txhua cov yeeb nkab yuav tsum raug kuaj xyuas hluav taws xob tsis zoo lossis kev sim hydrostatic, hom kev sim siv yuav tsum nyob ntawm qhov kev xaiv ntawm cov chaw tsim khoom, tshwj tsis yog muaj lwm yam teev hauv daim ntawv xaj yuav khoom.
Kev ntsuam xyuas hydrostatic yuav tsum tau ua raws li qhov tshwj xeeb A 450 / A 450M, tshwj tsis yog tias nyob rau hauv kev suav ntawm hydrostatic test siab 64000 (441.2) yuav tsum tau hloov rau 32000 (220.6).
Nco tseg:
Mill daim ntawv pov thawj yuav raug muab tawm raws li EN10204.3
Tag nrho cov raj yuav tsum tau muab raws li qhov tsim nyogASTM A789 / A789M Kev qhia tshwj xeeb.
