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ASME SA-789 Cov Lus Qhia Tshwj Xeeb rau cov hom phiaj dav hlau stainless hlau

Oct 27, 2025

​Dab tsi yog asme sa-789 / SA-789m?​

ASME SA-789 / SA-789M npog seamless thiab werred ferritic / Austenitic (Duplex) stainless hlau tubing rau cov laj thawj dav dav. Cov kav dej no muaj nyob rau hauv cov qib xws li UN32101, Untren S3220 5, Untren S32304 thiab UNR UNITT S32750, ntawm lwm tus.
​Qhov ntau thiab tsawg:​
Sab nraud inch (OD): txij li 20 txog 762 hli.
Phab ntsa tuab: Los ntawm 2.0 txog 120 hli.
Cov txheej txheem tsim khoom: tsim los ntawm kev ua kom txias thiab txias kos duab, thiab muab tso rau hauv lub xeev kub-kho kom sov thiab pickled.

 

​Tshuaj lom neeg muaj pes tsawg leeg ntawm asme sa789 kav​

Degree (uns)
C (carbon, siab tshaj%)
Mn (manganese, siab tshaj%)
P (phosphorus, siab tshaj%)
S (sulfur, siab tshaj%)
Yog lawm (silicon, siab tshaj%)
CR (chromium,%)
Ni (npib tsib xee,%)
Mo (Molybdenum,%)
N (nitrogen,%)
Lwm tus
S31803 / S32205
0.03
2.00
0.03
0.02
1.00
21.0 - 23.0
4.5 - 6.5
2.5 - 3.5
0.08 - 0.20
-
S32750
0.03
1.20
0.035
0.02
0.80
24.0 - 26.0
6.0 - 8.0
3.0 - 5.0
0.24 - 0.32
-
S32760
0.03
1.00
0.03
0.01
1.00
24.0 - 26.0
6.0 - 8.0
3.0 - 4.0
0.20 - 0.30
W 0.50 - 1.00
S32304
0.03
2.50
0.04
0.03
1.00
21.5 - 24.5
3.0 - 5.5
0.05 - 0.60 0.60
0.05 - 0.20
-
S32550
0.04
1.50
0.04
0.03
1.00
24.0 - 27.0
4.5 - 6.5
2.9 - 3.9
0.10 - 0.25
CU 1.50 - 2.50
S31260
0.03
1.00
0.03
0.03
0.75
24.0 - 26.0
5.5 - 7.5
2.5 - 3.5
-
W 0.10 - 0.50

 

​Cov Khoom Siv Neeg Kho Tshuab ntawm ASME SA789 Seamless Yeeb Nkab​

Teem nqi
Yam tsawg kawg nkaus tensile lub zog (KSI [MPA])
Yam tsawg kawg nkaus los lub zog (KSI [MPA])
MAXUSION HARDNESS (BRINELL)
Yam tsawg kawg nkaus elongation hauv 2 nti lossis 50 hli (%)
S32205
95 [655]
70 [485]
290
25
S31803
90 [620]
65 [450]
290
25
S32550
110 [760]
80 [550]
297
15
S31500
92 [630]
64 [440]
290
30
S31260
100 [690]
65 [450]
290
25
S32520
112 [770]
80 [550]
310
25
S31200
100 [690]
65 [450]
280
25
S32304
100 [690]
65 [450]
290
25
S32001
90 [620]
65 [450]
290
25
S32760
109 [750]
80 [550]
300
25
S32750
116 [800]
80 [550]
310
15
S32950
100 [690]
70 [480]
290
20

 

Qhov seem ntev yog kev zam ntawm cov kav dej duplex rau boilers (sa 789)​

Txheej hauv lub taub (d, mm)
Txheej hauv txoj taub kam kam rau (pvavw,%)
Txheej hauv txoj taub kam kam rau (pvod, hli)
Ntev ntev (PVL, hli)
Sab Hauv Dia Dagnance (PVMIW,%)
d <12.7
± 15
± 0.13
(3, 0)
(30, 0)
12.7 tsawg dua los yog sib npaug rau d <38.1
Nclus 10
± 0.13
(3, 0)
(20, 0)
38.1 tsawg dua lossis sib npaug rau d <88.9
Nclus 10
0.25
(5, 0)
(20, 0)
88.9 tsawg dua los yog sib npaug rau d <139.7
Nclus 10
± 0.38
(5, 0)
(20, 0)
139.7 tsawg dua lossis sib npaug rau d <203.2
Nclus 10
± 0.76
(5, 0)
(20, 0)

 

​Kev Kho Mob Thermal​

Cov kav dej yuav tsum tau muab rau hauvCua sov kho mobCov.

 

​Corrosion Kuj​

TusDUPLEX Qauv(Ferritic / austenitic) muabZoo tsis kam mus rau ntau hom kev corrosion, Suav nrogKev ntxhov siab corrosion tawg hauv chloride ib puag ncigCov.

 

​Qhov kub thiab txias​

Cov hlau no tuaj yeem dhau losNkig ntawm cov kub kub yog siv rau lub sijhawm ntev, Yog li ntawdTsis pom zoo rau cov kev pab kub siabCov.

 

​Tshuaj Ntsuam Xyuas​

Tshuaj lom neeg tshuaj: ua raws li cov tsis tsim nyog.
Sab nraud yuav tsum tau.
Cov cuab yeej ua lwm yam ntawm chav tsev kub: ua raws li cov tsis muaj ntawm lub rooj 2.
Hardness: ntsib cov kev ntsuas ntawm lub rooj 2.
Kev ntsuas kev nthuav dav (rau cov kav dej seamless).
Tsoo xeem (rau cov kav dej welded).
Rov qab siab ntsuas (rau welded kav).
Kev ntsuam xyuas hydraulic lossis tsis yog-ua kev puas tsuaj rau hluav taws xob.

 

​Cov khoom siv twg yog SA789 S32750?​

SA 790 und s32750 cov ntaub ntawv yog ib tug super muaj zog duplex stainless hlau stainless, nrog ib qho alloy muaj 25% chromium, 7% npib tsib caug thiab 4% molybdenum. Qhov no muab nws lub zog siab thiab ua tau zoo heev corrosion, uas tso cai rau nws siv hauv acidic ib puag ncig nrog qib siab ntawm kev xeb.
Yog li ntawd, sa 789 unic s32750 cov kav dej kub kub yog qhov zoo tagnrho rau kev siv hauv kev fab tshuaj, xws li cov tshuaj lom neeg, petine cov txheej txheem.

Tug: Dab tsi yog en 1.4301 stainless hlau?
Tom ntej: Txheem SS304 Cov Yeeb Nkab Stainless Hlau Loj Rau