316LN Seamless Yeeb Nkab

Lub npe 316LN zaum hauv ib pawg me me ntawm cov qib stainless uas feem ntau cov ntawv teev npe qhia tab sis ob peb tus neeg muag khoom tuaj yeem piav qhia: nws yog 316L chemistry nrog kev txhob txwm tswj cov nitrogen ntxiv, thiab cov khoom ib leeg hloov cov neeg kho tshuab ntawm cov yeeb nkab yam tsis hloov nws cov corrosion kuj. Ib tus neeg yuav khoom piv 316LN tawm tsam dawb 316L ntawm daim ntawv pom tus lej muaj zog ntau dua thiab sib txawv me ntsis UNS code, S31653 tsis yog S31603.

Stainless hlau ASTM A312 SS 316LN yeeb nkab Specification

Qhov ntau thiab tsawg:	1/8 "mus rau 24"
Hom:	Seamless / ERW / Welded / Fabricated / LSAW Pipes
Qib:	SS 316LN Steel, 1.4429|1.4406 Stainless hlau
Teem caij:	STD, XS, XXS, SCH5S, SCH10/10S, SCH20, SCH30, SCH40/40S, SCH60, SCH80/80S, SCH100, SCH120, SCH140, SCH160
Qauv:	Txuj: ASTM A213, ASTM A312, ASTM A269
Thickness:	15 NB UP TO 600 NB IN SCH 5S, 10S, 10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS
Daim ntawv:	Round, Square, Rectangular, Hydraulic thiab lwm yam
Ntev:	SRL thiab DRL 5meters txog 11meters muaj los ntawm Tshuag lossis Ntau Lawm.
Xaus:	Plain / Beveled

Hu rau tam sim no

Qhov "LN" txhais li cas: UNS S31653 thiab EN 1.4429

316LN Seamless Yeeb Nkab yog cov nitrogen - muaj zog version ntawm 316L. Lub hauv paus chemistry yog tib yam qis-carbon molybdenum-cov qib austenitic, tab sis nitrogen tau teev nyob rau hauv ib pawg tswj hwm ntawm 0.10 mus rau 0.16 feem pua ​​​​tsis txhob tso tseg rau txhua yam uas yaj tuaj. Cov tshuaj nitrogen tswj tau ua ob txoj haujlwm ib zaug: nws nce qhov tsawg kawg nkaus lub zog los ntawm cov khoom- kev daws kom muaj zog, thiab nws ua rau qib resistant rau rhiab heev nrog rau cov ntsiab lus carbon tsawg. Cov qib tshwm nyob rau hauv Teb Chaws Asmeskas system raws li UNS S31653 thiab nyob rau hauv European system raws li EN 1.4429 (X2CrNiMoN17-13-3), yog li ib tug European kev nug thiab ib tug American nug rau tib cov yeeb nkab yuav siv tau txawv kiag li designations rau tib yam khoom.

 

Cov tshuaj tshwj xeeb uas tswj hwm 316LN yeeb nkab yog ASTM A312 rau seamless thiab welded yeeb nkab, nrog cov phaj sib npaug hauv ASTM A240. Cov kev txwv tsis pub muaj nyob hauv qab no; Qhov tseem ceeb yog tus qauv siab tshaj plaws thiab ntau yam, thiab daim ntawv pov thawj zeb rau 316LN yeeb nkab yuav tsum zaum hauv txhua qhov ntawm cov kab no.

 

Tshuaj muaj pes tsawg leeg ntawm 316LN (UNS S31653)

Kev txwv kev txwv rau ASTM A312 (pipe) thiab ASTM A240 (phaj), feem pua ​​​​ntawm qhov hnyav:

 

Element	Min (%)	Max (%)	Vim Li Cas Nws Thiaj Tswj
Cov pa roj carbon (C)	-	0.030	Cov pa roj carbon tsawg ua rau cov qib tiv thaiv kom tsis txhob muaj kev kub ntxhov thaum vuam; l npe
Manganese (Mn)	-	2.00	Deoxidiser thiab austenite stabilizer; kuj pab nitrogen solubility
Silicon (Si)	-	0.75	Deoxidation pab thaum melting
Phosphorus (P)	-	0.045	Impurity tswj rau kub workability thiab toughness
Sulfur (S)	-	0.030	Tswj impurity; khaws cia qis rau weldability
Chromium (Cr)	16.00	18.00	Thawj corrosion kuj; zaj movie qub
Nickel (Ni)	10.00	14.00	Austenite stabilizer; toughness ntawm tsawg kub
Molybdenum (hli)	2.00	3.00	Tsis kam rau pitting thiab crevice nres hauv chlorides
Nitrogen (N)	0.10	0.16	Khoom-kev daws teeb meem; lub caij uas ua rau qib 316LN no tsis yog 316L

 

Lub luag haujlwm ntawm Nitrogen

Nitrogen dissolves interstitially nyob rau hauv lub austenite lattice thiab blocks dislocation txav, uas yog tib yam mechanism uas tsa lub zog tsis ntxiv alloy nqi los yog txia ductility. Cov txiaj ntsig tau zoo yog qhov tsawg kawg nkaus tawm lub zog ntawm 205 MPa (30 ksi) nyob rau hauv cov xwm txheej annealed tiv thaiv 170 MPa (25 ksi) rau 316L, nce ntawm kwv yees li 20 feem pua.

 

Vim tias nitrogen ntxiv rau cov yaj es tsis yog dov rau hauv phab ntsa, qhov kev ntxiv dag zog yog zoo ib yam los ntawm cov ntu, thiab nws tsis ploj mus thaum cov yeeb nkab tau welded, khoov lossis tsim txoj kev txias - ua haujlwm ntxiv dag zog tuaj yeem. Lwm qhov txiaj ntsig yog qhov tsis paub zoo: nitrogen txhim kho kev tiv thaiv pitting corrosion hauv kev pabcuam chloride, yog li 316LN yog me ntsis siab dua ntawm crevice thiab pitting nres tshaj tib cov yeeb nkab hauv 316L ntawm tib yam chemistry.

 

Mechanical Properties, Annealed

Yam tsawg kawg ntawm cov cuab yeej cuab tam hauv qab no yog muab los ntawm cov txheej txheem annealed ntawm cov qauv tswj. Cov yeeb nkab version (ASTM A312) thiab phaj version (ASTM A240) teeb tsa tib lub tensile thiab tawm los tsawg kawg nkaus, nrog elongation ntsuas ntawm qhov ntsuas qhov ntev. Hardness feem ntau siv rau cov khoom phaj hauv A240.

 

Khoom	ASTM A312 (pib)	ASTM A240 (Plate)	Nco tseg
Tensile zog, min	515 MPa (75 ksi)	515 MPa (75 ksi)	Tib yam tsawg kawg nkaus hauv ob hom khoom
Yield zog, min	205 MPa (30 ksi)	205 MPa (30 ksi)	Nitrogen credit tshaj 316L's 170 MPa
Elongation, min	35% (ntawm 2 hauv lossis 50 mm)	40% (ntawm 2 hauv lossis 50 mm)	Phaj yam tsawg kawg yog siab dua los ntawm cov lus qauv
Hardness, max	-	217 HWB / 95 HRB	Phaj rau A240; yeeb nkab hardness tsis teev nyob rau hauv A312

 

Cov duab elongation tsim nyog rau qhov thib ob saib . 316LN khaws 35 mus rau 40 feem pua ​​​​tsawg kawg elongation txawm tias cov txiaj ntsig siab dua, uas txhais tau hais tias qib tuaj yeem txias khoov, flared, nthuav dav thiab dov rau hauv coils yam tsis muaj tawg, thiab cov spool tiav khaws cia tib lub zog raws li - xa cov yeeb nkab. Qhov kev sib xyaw ua ke no, cov txiaj ntsig siab dua nrog kev khaws cia ductility, yog qhov ua rau 316LN txaus nyiam rau lub siab- muaj cov khoom siv uas cov phab ntsa tuab yog tsim los ntawm tus qauv tsim.

 

Lub cev muaj zog

Lub cev tsis tu ncua hauv qab no yog qhov feem ntau txais txiaj ntsig rau 316 tsev neeg nrog cov nitrogen ntxiv; lawv tsis yog cov txiaj ntsig kev cog lus tab sis muaj txiaj ntsig zoo rau kev tsim thermal, ntsuas qhov hnyav thiab nthuav dav.

 

Khoom	Tus nqi	Chav tsev
Qhov ntom	7.98	g/cm³ (0.288 lb/in³)
Modulus ntawm elasticity, chav tsev kub	193	GPa (28,000 ksi)
Lub ntsiab lus coefficient ntawm thermal expansion, 20-100 degree	16.0	µm/m·K
Thermal conductivity, 100 degree	16.3	W/m·K
Cov cua kub tshwj xeeb, 0-100 degree	500	J/kg · K
Hluav taws xob resistivity, chav tsev kub	0.74	µΩ·m
Melting ntau	1371–1399	degree (2500-2550℃F)

 

Tsawg-Kev Ua Haujlwm Kub: Qhov twg 316LN Yeeb Nkab Yeej

Ib qho kev sib cav muaj zog tshaj plaws rau 316LN yeeb nkab yog nws tus cwj pwm ntawm qhov kub thiab txias. Austenitic stainless hlau twb ua tau zoo dua cov pa roj carbon steel thiab cov qib ferritic feem ntau ntawm qhov kub thiab txias vim tias lub ntsej muag -centred- cubic lattice tsis dhau mus rau qhov zas - mus rau - nkig hloov; 316LN ntxiv cov txiaj ntsig siab dua kom cov yeeb nkab ua kom siv tau lub zog ntawm -196℃(kua nitrogen) thiab hauv qab no, thaum tuav lub zog Charpy zoo heev. Qhov no yog vim li cas 316LN yog qhov kev xaiv tus qauv rau LNG terminals, huab cua sib cais cov thawv txias thiab cov kav dej cryogenic cia, qhov twg 316L yuav xav tau phab ntsa tuab kom ncav cuag qhov kev ntxhov siab zoo ib yam ntawm qhov tsim kub.

 

Rau cov kav xa khoom qhov kev sib piv yog ncaj nraim: yog tias txoj kab ua haujlwm hauv qab no txog -50℃thiab txoj cai tswjfwm tso cai rau cov khoom siv, 316LN muab cov qauv tsim ntau dua ib millimeter ntawm phab ntsa ntau dua 316L. Lub zog ntxiv tsis yog yuav nrog kev kho cua sov uas yuav tsum tau rov qab ua dua tom qab vuam, thiab nws tsis txo qhov kub thiab txias toughness ntawm txoj kev siab dua carbon lossis ferrite cov ntsiab lus.

 

Standards, Forms thiab Finishes

316LN yog tsim nyob thoob plaws cov khoom siv tsis zoo hauv tsev neeg, thiab txhua daim ntawv tsim khoom muaj nws tus qauv tswj hwm. Tus neeg yuav khoom yuav tsum tau hais ob qho tib si UNS tus lej thiab cov qauv khoom ntawm qhov kev nug, vim tias 316LN bar, phaj, yeeb nkab thiab forgings tau them tag nrho los ntawm cov ntaub ntawv ASTM sib txawv.

 

Daim ntawv khoom	Kev tswj hwm tus qauv	Hom Loj Ntau Yam Khoom
Seamless yeeb nkab	ASTM A312 TP 316LN 1	NPS 1/8 to NPS 12 (DN 6 to DN 300), phab ntsa SCH 5S rau SCH 80S
Welded yeeb nkab (EFW / ERW)	ASTM A312 TP316LN / A358 Qib 316LN	NPS 6 txog NPS 24 (DN 150 txog DN 600) rau loj - kab tho
Tube (heat exchanger)	ASTM A269 / A213	OD 6.0 txog 60.0 hli, phab ntsa 0.8 txog 4.0 hli
Phaj thiab daim ntawv	ASTM A240 UNS S31653 Cov Lus Qhia	Thickness 0.5 mus rau 80 mm, dav mus txog 2500 mm
Bar thiab billet	ASTM A479 / A276	Round bar Ø 10 mus rau 300 mm

 

Cov yeeb nkab nto ua raws li cov lus pom zoo ib yam li 316L: seamless yeeb nkab feem ntau muab nrog lub tshuab ua tiav tsim nyog rau feem ntau cov txheej txheem, thaum cov khoom siv welded thiab polished yog muaj rau kev huv thiab siab - cov kab purity. Phaj muaj nyob rau hauv No.1 (kub dov, annealed thiab pickled) thiab 2B tiav, nrog BA los yog iav polish muaj nyob rau ntawm daim ntawv nyias. Rau cryogenic thiab siab - kev pabcuam kev ncaj ncees, qhia txog qhov yuav tsum tau kuaj xyuas qhov cuam tshuam ntawm PO es tsis yog xav tias tus qauv suav nrog nws.

 

Fabrication thiab Vuam Cwj Pwm

316LN welds nrog tib tsev neeg muab tub lim li 316L, thiab cov ntsiab lus nitrogen tsis yuam kev hloov ntawm cov txheej txheem. Sib txuam muab tub lim yog ER316L / E316L rau feem ntau cov pob qij txha; qhov twg cov weld yuav tsum phim lub hauv paus hlau yield zog, siv 316LN-tsim muab tub lim los yog ib tug 316L muab tub lim thiab lees tias cov weld hlau yuav softer me ntsis ntawm cov nitrogen- zog puag yeeb nkab.

 

Cov qib yog tag nrho austenitic nyob rau hauv weld cheeb tsam, uas txhais tau tias tsis muaj preheat yuav tsum tau thiab tsis muaj post-weld cua sov yog xav tau rau kev pab cuam corrosion. Cov ntsiab lus tsis tshua muaj carbon thiab cov nitrogen ntxiv ob qho tib si tiv thaiv chromium carbide nag lossis daus ntawm cov ciam teb, yog li HAZ nyob twj ywm resistant rau intergranular corrosion txawm nyob rau hauv multi- dhau welds.

 

Muaj ob txoj kev ceev faj txog kev tsim khoom. Ua ntej, nitrogen- ua kom muaj zog austenitic qib ua haujlwm- tawv me ntsis sai dua 316L, yog li cov cuab yeej txias txias thiab swaging yuav tsum tau teem caij rau lub caij nplooj ntoos hlav ntxiv me ntsis thiab lub zog me ntsis ntxiv.

 

Qhov thib ob, yog tias cov spool tiav lawm yog annealed tom qab tsim rau ib tug tag nrho softened mob, lub tshav kub kev kho mob kub thiab quench yuav tsum ua raws li A312 / A240 annealing xyaum rau qib no; 1060-1120℃kev daws teeb meem nrog cov dej quench restores ob lub zog thiab corrosion kuj.

 

Cov ntawv thov uas Justify 316LN Tshaj 316L

Tsis yog txhua 316L kab yuav tsum dhau los ua 316LN. Cov qib tau txais nws cov lus qhia tshwj xeeb uas ib qho ntawm peb qhov xwm txheej tam sim no: qis- kev pabcuam kub qhov twg cov txiaj ntsig tau txais txiaj ntsig txo cov phab ntsa tuab, siab - kev pabcuam siab qhov kev tsim qauv yog lub zog- tswj hwm tsis yog corrosion- tswj hwm, lossis chloride raug qhov twg nitrogen pitting credit tsim nyog muaj. Cov lus hauv qab no qhia cov chav pabcuam thiab cov laj thawj rau txhua tus.

 

Kev pabcuam	Yog vim li cas 316LN Specification	Sau ntawv tsim
LNG thiab cryogenic piping	High tawm los ntawm -196℃nrog zoo heev cuam tshuam lub zog	Phab ntsa feem ntau teem los ntawm cov cai tso cai rau kev ntxhov siab; 316LN txiav qhov hnyav
Cua cais cov thawv txias	Tsawg-kub toughness thiab weldability	Tshawb xyuas Charpy cov cai ntawm PO
Tshuaj thiab petrochemical txheej txheem kab	Kev tsim qauv siab dua rau tib phab ntsa li 316L	Pab tau qhov twg B31.3 siab tsim tswj cov phab ntsa
Kev pabcuam dej hiav txwv thiab chloride	Nitrogen txhim kho pitting tsis kam tshaj 316L	Tseem tsis yog qhov hloov pauv rau duplex hauv dej hiav txwv kub; siv nrog kev tshuaj xyuas tsim
Nuclear thiab siab - cov nkoj muaj kev ncaj ncees	Tswj nitrogen, tsis tshua muaj carbon, cov khoom sib xws	Tej zaum yuav xav tau NDE ntxiv thiab traceability ib qhov project spec
Pharmaceutical thiab zaub mov kab	Cleanability thiab weldability sib npaug rau 316L	Qhia meej polished bore yog cov khoom tiv tauj

 

Size Range, Lengths thiab Supply Form

316LN seamless yeeb nkab feem ntau muab nkag rau hauv NPS 1/8 rau NPS 12 ntau yam nrog cov phab ntsa ntawm SCH 5S txog SCH 80S, nyob rau hauv ob qho tib si random lengths (ib txwm 5 mus rau 7 m) thiab txiav - mus rau - ntev. Cov kab uas hla loj dua yog muaj nyob rau hauv welded-thiab- cov khoom ntim rau hauv A312 lossis A358. Cov lus hauv qab no qhia txog tus qauv sab nraud diameters rau qhov ntau thiab tsawg feem ntau xaj; phab ntsa thickness rau ib lub sij hawm muab raws li ASME B36.19M stainless hlau lub sij hawm lub rooj, thiab sab hauv txoj kab uas hla yog OD rho ob zaug ntawm phab ntsa.

 

NPS	DN	Sab nraud txoj kab uas hla (mm)	Hom Phab Ntsa Khoom
1/2	15	21.3	SCH 5S, 10S, 40S, 80S
3/4	20	26.7	SCH 5S, 10S, 40S, 80S
1	25	33.4	SCH 5S, 10S, 40S, 80S
1 1/2	40	48.3	SCH 5S, 10S, 40S, 80S
2	50	60.3	SCH 5S, 10S, 40S, 80S
3	80	88.9	SCH 5S, 10S, 40S, 80S
4	100	114.3	SCH 5S, 10S, 40S, 80S
6	150	168.3	SCH 5S, 10S, 40S, 80S
8	200	219.1	SCH 5S, 10S, 40S, 80S
10	250	273.1	SCH 5S, 10S, 40S, 80S
12	300	323.9	SCH 5S, 10S, 40S, 80S

 

Yuav Ua Li Cas Hais Txog Kev Tshawb Fawb

Txhawm rau kom tau txais 316LN cov yeeb yaj kiab hais txog qhov sib npaug ntawm lub hom phiaj tsim, kev nug yuav tsum nqa cov ntaub ntawv hauv qab no; ib daim ntawv luv luv zam ob qho kev ua yuam kev ntau tshaj plaws, uas tau txais 316L tsis yog 316LN thiab tau txais cov khoom siv welded qhov twg seamless tau npaj.

 

• Qauv: ASTM A312 TP316LN, EN 1.4429, UNS S31653
• Cov qauv thiab cov qauv: seamless yeeb nkab rau A312, los yog welded-thiab-annealed ib A312/A358 rau loj bore
• Loj: NPS los yog DN, sab nraud txoj kab uas hla, thiab lub sij hawm los yog meej phab ntsa thickness nyob rau hauv mm
• Qhov ntau thiab ntev hauv paus: random lengths, txiav lengths, los yog pes tsawg meterage
• Qhov xwm txheej: annealed (kev daws teeb meem ntawm 1060-1120℃thiab quenched) raws li tus qauv
• Kev xeem: daim ntawv pov thawj zeb EN 10204 3.1, thiab seb Charpy cuam tshuam ntawm -196℃lossis chav ntsuas kub yuav tsum tau ua
• Finish: zeb tiav rau cov txheej txheem kab; polished bore rau kev pabcuam tu cev
• Traceability: tag nrho cov cua kub traceability thiab cim ib A999 / A530 thaum qhov project specification xav tau nws

 

Muab 316LN yeeb nkab feem ntau yog cim nrog tus qauv, qib, tus naj npawb ntawm cov cua sov thiab qhov loj me, thiab tau txais kev txhawb nqa los ntawm 3.1 zeb daim ntawv pov thawj qhia txog qhov tseeb chemistry thiab tensile cov txiaj ntsig ntawm cov cua sov. Vim tias 316LN thiab 316L sib koom tib lub hnab ntawv tiv thaiv corrosion, qib qee zaus hloov ntawm qhov chaw; Qhov kev nug yuav tsum tau hais meej meej tias 316LN yog daim ntawv cog lus uas yuav tsum tau ua thiab qhov kev hloov pauv rau 316L tsis tuaj yeem lees txais yam tsis muaj kev pom zoo.

 

 

 

Cim npe nrov: 316LN yeeb nkab, 316LN seamless yeeb nkab, ASTM A312 TP316LN, UNS S31653, 1.4429 stainless hlau yeeb nkab, nitrogen muaj zog stainless hlau, 316LN stainless hlau yeeb nkab, 316LN siab yeeb nkab