17-4PH Phaj ASTM A693 Stainless Hlau Phaj

17-4PH Phaj, UNS S17400nrog AISI lub npe 630 thiab EN cov khoom siv naj npawb 1.4542, yog nag lossis daus -cov hlau tsis muaj zog uas sib xyaw ua haujlwm ntawm cov qib austenitic nrog cov qib zog ib txwm khaws tseg rau cov cuab yeej steel. Nyob rau hauv lub hnub nyoog H900 tus mob lub phaj nce mus txog qhov tsawg kawg nkaus tensile lub zog ntawm txog 1310 MPa, tsis tau nws pib lub neej raws li ib tug mos, weldable martensitic phaj ntawm roughly 38 HRC siab tshaj plaws, uas yog tag nrho cov ntsiab lus ntawm qib: fabricate nyob rau hauv lub mos mos, hnub nyoog mus rau tag nrho lub zog tom qab tsim thiab vuam, thiab zam lub distortion thiab machining tag nrho cov nqi.

SS 17-4 PH Phaj Specification

Qib	Stainless hlau 17-4 PH|UNS S17400
Txuj	ASTM B625 / ASME SB625
Thickness	0.1mm txog 100mm
Ntev	2000mm, 2440mm, 3000mm, 5800mm, 6000mm, thiab lwm yam
Dav	1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, thiab lwm yam
Nto	2B, 2D, BA, NO.1, NO.4, NO.8, 8K, daim iav, checkered, embossed, plaub hau kab, xuab zeb moj tej tawg, Txhuam, etching, thiab lwm yam
Ua kom tiav	Kub dov phaj (HR), Cold Rolled Sheet (CR), 2B, 2D, BA NO (8), SATIN (Met with Plastic Coated)
Daim ntawv	Cov ntawv, phaj, coils, slatting coils, perforated coils

Hu rau tam sim no

Tshuaj muaj pes tsawg leeg (ASTM A693, UNS S17400)

Cov muaj pes tsawg leeg hauv qab no yog lub qhov rais txais A693. Cov khub txhais tau tias yog chromium ntxiv rau npib tsib xee ntawm qhov sib piv 4: 1 uas muab cov kev hloov pauv martensitic, nrog tooj liab thiab niobium ntxiv rau cov nag lossis daus cov tshuaj tiv thaiv uas ua rau cov tawv tawv.

 

Element	Tsawg%	Max %
Chromium (Cr)	15.0	17.5
Nickel (Ni)	3.0	5.0
Copper (Cu)	3.0	5.0
Niobium + Tantalum (Nb + Ta)	0.15	0.45
Cov pa roj carbon (C)	-	0.07
Manganese (Mn)	-	1.0
Silicon (Si)	-	1.0
Phosphorus (P)	-	0.040
Sulfur (S)	-	0.030

 

Nyeem cov chemistry tiv thaiv tshav kub- kho cov logic. Cov chromium ntau, 15 mus rau 17.5 feem pua, muab cov qib nws corrosion kuj, piv rau 304 hauv kev pabcuam me me. Cov npib tsib xee thiab cov pa roj carbon tsawg tuav cov martensite mos txaus rau tshuab ua ntej kev laus. Cov tooj liab, ntawm 3 mus rau 5 feem pua, yog lub hardener: ntawm kev laus ntawm 480 mus rau 620 deg C, tooj liab precipitates tawm raws li zoo hais nyob rau hauv lub martensitic matrix thiab xauv lub dislocation qauv, uas yog dab tsi lifts lub zog tawm los ntawm txog 760 MPa nyob rau hauv lub annealed H1170 txog 1. Qhov sib ntxiv niobium tswj kev loj hlob ntawm cov qoob loo thiab ua rau cov nyhuv me me thib ob hardening.

 

Mechanical Properties: Lub hnab ntawv Tag Nrho Kev Laus

17-4PH Phaj ASTM A693 Stainless Hlau Phaj yog txiav txim los ntawm tus mob, thiab tus mob yog teem los ntawm kev laus kub. Cov txiaj ntsig hauv qab no yog qhov tsawg tshaj plaws uas tau tshaj tawm los ntawm kev qhia tshwj xeeb thiab cov ntaub ntawv zeb rau phaj; qhov kev lees paub qhov tseeb nyob ntawm qhov kev txiav txim thiab cov khoom siv.

 

Qhov xwm txheej	Kev Kub Kub Kub	Tensile zog (MPa)	Yield zog (MPa)	Elongation	Hardness (HRC)
Qhov xwm txheej A (annealed)	-	max 1250 Nws	kwv yees . 760	-	max 38
H900	482c ua	pem 1310	pem 1170	tsawg tshaj 10%	ua min40
H925	496c ua	ua 1240	pem 1140	tsawg tshaj 10%	qis 38
H1025	552c ua	pem 1170	qis 1070	min 12%	ua min35
H1075	579c ua	pem 1140	min 1000	tsawg kawg 13%	ua min32
H1100	593c ua	qis 1070	ua 965	qis tshaj 14%	ua min31
H1150	621c ua	min 1000	ua 790	qis tshaj 16%	ua min28

 

Lub rooj yog cov cuab yeej xaiv hauv nws tus kheej. H900 muab lub zog siab tshaj plaws thiab qhov tawv tawv rau qhov chaw hnav thiab cov khoom hnyav hnyav, ntawm tus nqi qis tshaj plaws. H1150 restores ductility thiab cuam tshuam tsis kam rau cov seem tuab thiab siab- tuav lub luag haujlwm, txi txog 25 feem pua ​​​​ntawm H900 lub zog. Cov xwm txheej nruab nrab H1025 thiab H1075 muab qhov feem ntau siv sib npaug ntawm lub zog, toughness thiab tsis kam mus rau hydrogen embrittlement hauv kev pabcuam qaub. Cov xwm txheej tau txiav txim yuav tsum ua raws li daim ntawv thov zaum kawg, vim tias lub phaj tsis tuaj yeem rov ua dua - hnub nyoog hauv thaj teb mus rau qhov sib txawv yam tsis muaj kev daws teeb meem tag nrho - kho thiab hnub nyoog voj voog.

 

Lub cev muaj zog

 

Khoom	Tus nqi
Qhov ntom	7.78g 3
Melting Range	1400 - 1440 deg C
Modulus ntawm Elasticity	196 gpa ua
Thermal conductivity (100 ° C)	18.3 W/m.K
Qhov nruab nrab Coefficient ntawm Expansion (0-100 ° C)	10.8 x 10-6 /K
Sib nqus	Sib nqus hauv txhua yam mob (martensitic)

 

Ob daim ntawv lub cev tseem ceeb hauv kev tsim phaj. Cov qib yog sib nqus nyob rau hauv txhua yam mob, tsis zoo li austenitic stainless, uas cuam tshuam rau qhov sib thooj ntawm cov keyboards, solenoid li qub thiab txhua yam sib nqus - cuam tshuam - rhiab sib dhos. Lub coefficient ntawm thermal expansion yog ze rau cov pa roj carbon steel, uas yooj yim dissimilar -hlau sib koom tsim nyob rau hauv cov qauv siv.

 

Fabrication Sequence: Soft In, Hard Out

 

• Kev sib sau: phaj yog sheared, dov los yog nres- tsim nyob rau hauv Kev Kho Mob A, qhov twg hardness yog 38 HRC siab tshaj plaws thiab cov khoom coj zoo li cov khoom siv martensitic stainless.
• Machining: drilling, milling thiab ntug kev npaj ua ntej kev laus, zam tus nqi ntawm machining ntawm 40+ HRC.
• Vuam: 17-4PH welds tsis muaj preheat, nrog kev sib txuam lossis 17-4 chemistry muab tub lim; qhov weld cheeb tsam softens thiab rov qab los rau tag nrho lub zog los ntawm kev kho kev laus zaum kawg.
• Kev laus: lub fabricated los ua ke yog hnub nyoog ntawm qhov xaiv kub, feem ntau yog rau 4 teev ntxiv rau 1 teev ib 25 hli ntawm seem thickness, thiab cua -txias.

 

Ib qho kev ceeb toom: lub phaj yuav tsum tsis txhob muaj hnub nyoog qis dua 480 ° C rau lub sijhawm ntev, thiab cov khoom siv uas yuav tsum tau plated rau kev tiv thaiv corrosion yuav tsum muaj hydrogen -embrittlement- kauj ruam tom qab plating, vim hais tias lub siab - lub zog microstructure yog susceptible. Rau qaub-kev pabcuam roj, qhia qhov H1025 lossis siab dua, qhov uas yuav tsum tau ua kom muaj zog thiab txo qhov tawv tawv yog xav tau los ntawm NACE MR0175 rau qib no.

 

Corrosion Resistance

 

17-4PH Phaj ASTM A693 Stainless Steel Phaj muaj kev tiv thaiv corrosion nyob rau hauv cov chav kawm dav dav ntawm 304 stainless hauv ntau cov xov xwm, nrog rau kev tiv thaiv zoo rau atmospheric corrosion thiab dilute acids dua hardenable carbon lossis alloy steels. Nws qhov kev ua haujlwm corrosion nyob ntawm qhov kev laus: siab dua - lub zog muaj zog (H900, H925) yog qhov ua rau muaj kev ntxhov siab ntau dua - corrosion cracking hauv chlorides thiab yuav tsum tau zam rau cov kev pabcuam chloride, thaum H1150 thiab siab dua - cov kev laus muab kev ua haujlwm zoo SCC zoo heev. Qhov twg chloride cracking yog ib qho kev pheej hmoo, lub phaj yog siv nyob rau hauv ntau tshaj - laus tej yam kev mob los yog hloov los ntawm ib tug duplex los yog nickel-base alloy.

 

Cov ntawv thov tseem ceeb

 

• Aerospace structural phaj, cav mount brackets thiab fasteners xav tau siab zog - rau - hnyav.
• Pump shafts, valve stems, impellers thiab hnav rings nyob rau hauv cov roj thiab roj, tshuaj thiab zaub mov industries.
• Marine thiab offshore hardware qhov twg 304 yog mos heev thiab 316L tsis muaj zog.
• Cov cuab yeej kho mob thiab phais, thiab pwm thiab tuag xav tau hardness nrog corrosion kuj.
• Cov ntawv thiab cov khoom siv petrochemical uas muaj zog thiab nruab nrab corrosion kuj yog ob qho tib si yuav tsum tau ua.

 

Ordering thiab Inspection Notes

Order 17-4PH phaj los ntawm UNS S17400 thiab tus qauv ASTM A693, thiab ib txwm hais qhov xwm txheej (piv txwv li Condition A lossis H900, lossis annealed-ces- laus). Daim ntawv pov thawj zeb yuav tsum sau cov kev ntsuas cua sov nrog cov nqi tooj liab thiab niobium, cov txiaj ntsig ntawm cov khoom xa tuaj, thiab qhov nyuaj. Paub meej tias phaj thickness kam rau A20 / A480, flatness, thiab ntug mob (sheared, plasma-txiav lossis machined).

 

Rau kev pabcuam siab thiab qaub, thov daim ntawv teev cov ntaub ntawv siv tau thiab NACE MR0175 daim ntawv ua raws, ntxiv rau EN 10204 3.1 ntawv pov thawj rau tag nrho traceability. Vim tias cov khoom siv hluav taws xob hloov pauv nrog cov xwm txheej, tau txais kev tshuaj ntsuam xyuas yuav tsum txheeb xyuas qhov hardness thiab, qhov twg tau teev tseg, cov txiaj ntsig kev ntsuas tensile tawm tsam qhov kev txiav txim, tsis yog tawm tsam cov txiaj ntsig ntawm qib generic.

 

17-4PH phaj yog cov nag lossis daus ua haujlwm- cov hlau tsis muaj zog: nws khoov, txiav thiab welds zoo li stainless hauv lub xeev mos thiab xa cov cuab yeej- steel lub zog tom qab lub hnub nyoog yooj yim. Tshwj xeeb los ntawm cov xwm txheej, txheeb xyuas los ntawm daim ntawv pov thawj, nws yog kev lag luam siab-lub zog phaj rau aerospace, roj thiab roj, thiab kev lag luam kev lag luam.

 

 

 

Cim npe nrov: 17-4ph phaj, uns s17400 phaj, astm a 693 17-4ph, 17-4ph stainless hlau phaj, aisi 630 phaj, nag lossis daus hardening stainless hlau phaj, 17-4ph h900 phaj, 17-4ph ntawv