17-4 PH Stainless hlau

17-4 PH Stainless hlau

17-4 PH stainless hlau yog martensitic nag lossis daus-hardening stainless hlau nrog zoo zog, hardness, thiab corrosion kuj. Nws muaj ib feem me me ntawm tooj liab thiab niobium / columbium alloy Cheebtsam. Hauv ntau qhov chaw, 17-4 PH stainless hlau muaj corrosion kuj piv rau 304 stainless hlau thiab feem ntau ntau dua li ntawm 400 series stainless hlau. 17-4 PH stainless hlau muaj kev tiv thaiv corrosion rau ib puag ncig zoo li dilute acids lossis ntsev, thiab nws feem ntau yog siv rau hauv kev sib xyaw ua ke los tiv thaiv corrosion los yog tshwj xeeb tshaj yog cov ntawv siv zog. 17-4 PH stainless hlau muaj cov dej ntws zoo heev thiab ua kom muaj zog.

Cov yam ntxwv ntawm kev ua tau zoo ntawm 17-4 PH yog tias lub zog theem tau yooj yim kho tau los ntawm kev hloov kho txoj kev kho cua sov. Qhov tseem ceeb ntxiv dag zog rau txoj hauv kev yog nag lossis daus hardening theem tsim los ntawm martensitic theem hloov thiab kho kev laus. 17-4 PH stainless hlau tau raug annealed thiab solidified thiab yuav tsum tsis txhob siv ntawm qhov kub siab tshaj 300 degree (572 degree F) los yog nyob rau hauv khov kub. Yog tias koj xav tau qhov zoo tshaj plaws txhua yam zoo los ntawm cov hlau no, koj yuav tsum tau kho lub hnub nyoog hardening, thiab kev kho cua sov ntawm 900 degree F (482 degree) muab cov alloy nws lub zog loj tshaj. Cov khoom siv kho tshuab ntawm 17-4 PH stainless hlau txhim kho tom qab kev kho cua sov, thiab lub zog compressive tuaj yeem ncav cuag 1100-1300 MPa (160-190 ksi).

Chemical Composition (%) ntawm 17-4 PH Stainless Steel

CHEMICAL COMPOSITION (%)
C, max	Mn, mas	P, max	S, max	Si, max	Cr	Ni	Cu	Fe	Nb plus Ta
0.07	1.00	0.04	0.03	1.00	15.00-17.50	3.00-5.00	3.00-5.00	So	0.15-0.45

Mechanical Properties of 17-4 PH Stainless hlau

MECHANICAL PROPERTIES
Kub	Tensile zog, MPa, min	Yield zog, MPa, min	Elongation (%), min	Hardness, max
Kev daws teeb meem	-	-	-	363 HHB, 38 HRC
480 degree	1310	1180	10	375 HB, 40 HRC
550 degree	1060	1000	12	331 HLB, 35 HRC
580 degree	1000	865	13	302 HB, 31 HRC
620 degree	930	325	16	277 HB, 28 HRC

Lub cev muaj zog ntawm 17-4 PH Stainless Steel

Lub cev muaj zog
Qhov ntom	Melting Point	Modulus ntawm Elasticity	Poisson tus ratio	Coefficient ntawm Thermal Expansion	Thermal conductivity	Hluav taws xob conductivity	Hluav taws xob Resistivity
7.75 g / cm³	1404-1440 degree [2560-2625℉]	196 gpa ua	0.28	18.3 W / m· degree	17 W/m·K	2.3% IAB	7 5m cm

Nta ntawm 17-4 PH Stainless hlau

- Siab zog
- Siab hardness
- Zoo heev corrosion kuj
- Zoo heev mechanical zog
- Zoo weldability
- General machinability
- Siab hnav tsis kam

Kev siv ntawm 17-4 PH Stainless Steel

17-4 PH stainless hlau yog dav siv hauv kev lag luam tshuaj, khoom noj khoom haus, ua ntawv, marine, aerospace, thiab lwm yam lag luam.
- Offshore platforms
- Chav turbine Cheebtsam
- Fasteners
- Couplings
- Cov khoom siv ua ntaub ntawv
- Mechanical Cheebtsam
- Cov khoom siv ua zaub mov

Qib sib npaug ntawm 17-4 PH Stainless Hlau

Qib	UNS	WERKSTOFF NR.	AISI	JIS	EN	AFNOR
17-4PH	S17400	1.4542	630	SIB 630	X5CrNiCuNb16.4	Z6CNU17-04

Forging ntawm 17-4 PH Stainless hlau

17-4 PH stainless hlau yuav tsum tau rhuab maj mam thiab tsis tu ncua mus rau 1180-1200 degree ua ntej forging; nws tsis tuaj yeem forged hauv qab 1010 degree. Ua ntej forging cov khoom, qhov kub thiab txias yuav tsum tau khaws cia rau ib teev. Cua txias rau chav tsev kub yuav tsum tau ua hauj lwm los xyuas kom meej cov nplej refining. Tsis tas li ntawd, forged pieces yuav tsum tau tov annealed ua ntej kev kho cua sov ntxiv.

Corrosion Resistance ntawm 17-4 PH Stainless hlau

Hauv ntau qhov chaw, 17-4 PH muaj corrosion kuj piv rau 304 thiab feem ntau zoo dua rau 400-series stainless hlau. 17-4 PH feem ntau yog ua haujlwm nyob rau hauv qee yam corrosion-resistant Cheebtsam lossis tshwj xeeb tshaj yog cov ntawv thov muaj zog. Nyob rau hauv ntau yam tshuaj, tsev, khoom noj khoom haus, pulp, thiab roj av siv, 17-4 PH stainless hlau muaj corrosion kuj piv rau 304L.

Cov tshuaj-annealed temper ntawm 17-4 PH tsis pom zoo rau kev siv dav dav vim tias nws yuav tawg brittlely thiab muaj kev cuam tshuam rau cov tshuaj chloride kev nyuaj siab corrosion tawg dua li cov khoom qub. Txhawm rau kom tsis txhob muaj cov tshuaj chloride kev nyuaj siab tawg, qhov kev laus yuav tsum siab dua 1022 degree F (550 degree), nyiam dua ntau dua 1094 degree F (590 degree). Qhov ntsuas kub rau chloride tempering yog 1022 degree F (550 degree), thiab qhov pom zoo rau kev siv hauv H2S media yog 1094 degree F (590 degree).

17-4 PH stainless hlau yog tsim nyog rau kev siv nyob rau hauv cov dej hiav txwv tej yam kev mob thaum lub mechanical qualities thiab corrosion kuj ntawm martensitic steel tsis txaus. Nws muaj cov khoom siv zoo heev nrog rau kev tiv thaiv corrosion; Txawm li cas los xij, nws muaj qhov cuam tshuam rau crevice corrosion hauv cov dej hiav txwv ruaj khov. Kev tiv thaiv ntxiv yog xav tau rau crevice corrosion thiab pitting.

Vuam ntawm 17-4 PH Stainless hlau

Qhov xwm txheej ntawm cov khoom siv hauv paus yuav tsum tau txiav txim siab ua ntej vuam 17-4 PH stainless hlau. Tooj liab muaj nyob rau hauv ib qho chaw ruaj khov hauv cov khoom. Qhov no yuav tsis ua rau tawg. Vim nws tsis tshua muaj hardness, 17-4 PH tuaj yeem welded mus txog 100 mm tuab yam tsis muaj preheating thiab yuav tsum tau arc thiab kuj welding txoj kev zoo ib yam li cov uas siv cov gauge stainless hlau. Txhawm rau kom tsis txhob muaj kev ntxhov siab tawg, cov khoom siv yuav tsum tau muab tshuaj ntxiv sai sai tom qab vuam thiab tom qab hnub nyoog.

17-4 PH stainless hlau tuaj yeem welded siv feem ntau cov txheej txheem, suav nrog phau ntawv hlau arc vuam (SMAW), tungsten arc vuam (GTAW), plasma arc vuam (PAW), thiab roj hlau arc vuam (GMAW).

Kev kho cua sov ntawm 17-4 PH Stainless Steel

17-4 PH stainless hlau yog cov tshuaj annealed ntawm qhov kub ntawm 1020 degree txog 1050 degree . Qhov no yog ua raws li cov txheej txheem txias ceev uas siv dej, roj, lossis cua. Nws yog txiav txim los ntawm cov khoom siv hla ntu.

Kub tsim ntawm 17-4 PH Stainless hlau

Qhov kub ntau rau kev sib sau kub 17-4 PH stainless hlau yuav tsum yog 950-1200 degree (1974-2192 degree F). Kev daws annealing, txias (hauv qab 25 degree), thiab kev laus yog tag nrho ib feem ntawm kev kho cua sov (ntawm qhov ntsuas kub).

Txias txoj kev ntawm 17-4 PH Stainless hlau

Txias txoj kev tuaj yeem tsuas yog ua rau ntawm daim hlau mos, thiab cov kev xav tau nruj heev. Kev laus theem nrab ntawm quenching thiab hardening kub tuaj yeem txhim kho kev ntxhov siab corrosion tom qab ua haujlwm txias.