1.4418 Stainless hlau - Specs & Applications

Apr 02, 2026

Tso lus

1.4418 stainless hlau, feem ntau hu ua 17-4PH lossis UNS S17400, yog martensitic nag lossis daus-cov hlau tsis muaj zog uas sib xyaw ua ke siab zog, zoo corrosion kuj, thiab zoo heev toughness los ntawm cov txheej txheem kho cua sov yooj yim. Nws ua tiav nws cov khoom los ntawm nag lossis daus- cov theem nplua nuj nyob rau hauv martensitic matrix, muab kev sib xyaw tshwj xeeb ntawm fabricability hauv cov tshuaj- kho mob thiab siab zog tom qab kev laus. Qhov no ua rau nws yog ib qho ntawm cov dej nag uas siv dav tshaj plaws - hardening stainless steels hla aerospace, tshuaj ua haujlwm, nuclear, thiab kev siv tshuab ua haujlwm siab.

Txuj	Qib sib npaug
EN (Tebchaws Europe)	1.4418
ASTM / AISI (USA)	17-4PH, UNS S17400
JIS (Nyiv)	SUS 630
Lub Npe	17-4PH, Qib 630

Element	C	Si	Mn	P	S	Cr	Ni	Cu	Nb+Ta
Cov ntsiab lus (%)	Tsawg dua los yog sib npaug li 0.07	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua los yog sib npaug rau 1.0	Tsawg dua lossis sib npaug li 0.04	Tsawg dua los yog sib npaug li 0.03	15.0 - 17.5	3.0 - 5.0	3.0 - 5.0	0.15 - 0.45

Qhov xwm txheej	Yield zog (Rp0.2)	Tensile zog (Rm)	Elongation (A)	Hardness (HRC)
Kev daws teeb meem (A)	~ 550 MPa	~ 900 MPa	~ 15%	~ 32 HRC
H900 (480℃hnub nyoog)	~ 1170 MPa	~ 1310 MPa	~ 10%	~ 44 HRC
H1025 (550℃hnub nyoog)	~ 1070 MPa	~ 1170 MPa	~ 12%	~ 38 HRC
H1150 (620℃hnub nyoog)	~ 790 MPa	~ 1000 MPa	~ 12%	~ 33 HRC

Siab zog - rau - Qhov hnyav piv:Ua tiav lub zog tensile tshaj 1300 MPa tom qab kev laus, deb tshaj tus qauv austenitic thiab martensitic stainless hlau, tso cai rau lub teeb yuag, siab - qauv tsim.

Zoo Corrosion Resistance:Muaj kev tiv thaiv corrosion zoo ib yam li Hom 304 stainless hlau nyob rau hauv ntau qhov chaw, haum rau nruab nrab corrosive tej yam kev mob xws li marine atmospheres, chemical processing, thiab zaub mov tuav.

Precipitation Hardening:Nws tuaj yeem siv rau hauv kev daws teeb meem -kho (softer) mob thiab tom qab ntawd muaj hnub nyoog kom ua tiav lub zog siab nrog qhov tsis sib xws tsawg, zoo heev rau cov khoom sib xyaw ua ke.

Zoo Fatigue Properties:Zoo qaug zog lub zog ua rau nws haum rau rotating thiab reciprocating Cheebtsam nyob rau hauv xav tau daim ntawv thov.

Aerospace:Kev tsaws iav Cheebtsam, turbine hniav, fasteners, actuators, thiab cov khoom siv.

Tshuaj thiab Petrochemical:Valves, twj tso kua mis shafts, fittings, mixers, thiab reactor Cheebtsam.

Roj & Roj:Cov cuab yeej Downhole, cov khoom siv lub taub hau zoo, cov tshuab tiv thaiv lub tshuab, thiab cov cuab yeej ntsuas vaj tsev.

Kev lag luam Nuclear:Tswj pas nrig mechanisms, valve Cheebtsam, thiab structural qhov chaw.

Kev kho mob:Cov cuab yeej phais thiab cov cuab yeej kho hniav.

Kev ua zaub mov:Cov cuab yeej xav tau lub zog thiab kev huv.

Kev lag luam ntawv:Cov kws kho mob cov hniav, txiav tuav, thiab hnav cov khoom.

Cov txheej txheem suav nrog ob kauj ruam tseem ceeb. Ua ntej, cov khoom siv yogtshuaj khonyob ib ncig ntawm 1040℃thiab txias sai heev (cua cua lossis roj quench), uas ua rau cov mos mos, qis-lub zog, martensitic qauv (Cov Qauv A) uas yooj yim rau tshuab. Qhov thib ob, nws undergoesaging ( nag lossis daus hardening )ntawm qhov kub qis (piv txwv li, 480℃rau H900, 550℃rau H1025, 620℃rau H1150). Qhov no ua rau cov tooj liab zoo- nplua nuj precipitates tsim nyob rau hauv martensitic matrix, ua rau kom muaj zog thiab hardness. Qhov sib txawv ntawm kev laus ua kom muaj zog sib txawv-tuaj yeem ua ke: qhov kub thiab txias (H900) muab lub zog siab tshaj plaws thiab hardness, nruab nrab kub (H1025, H1075) muab qhov sib npaug sib npaug, thiab qhov kub siab dua (H1150) muab qhov zoo tshaj plaws toughness thiab kev nyuaj siab corrosion cracking kuj.

Nws yog feem ntau machined nyob rau hauv cov kev daws teeb meem -kho (Txog A) xeev, qhov uas nws muaj ib tug machinability ntsuam xyuas zoo ib yam li hom 304 (kwv yees li 45% ntawm B1112 steel). Tom qab kev laus mus rau lub zog siab dua (xws li H900), kev ua haujlwm ua haujlwm nyuaj dua thiab ua kom puas, yuav tsum tau siv cov cuab yeej nyuaj (carbide lossis ceramic), txo qhov nrawm, thiab hloov tsis tau. Kev xyaum zoo yog ua haujlwm feem ntau ua ntej kev kho kev laus zaum kawg, tom qab ntawd ua kom tiav yog tias tsim nyog tom qab kev laus. Rau qhov nyuaj, kev ua haujlwm ntxhib hauv qhov xwm txheej A, txo kev ntxhov siab, ua tiav machining, thiab kev laus zaum kawg yuav raug ua haujlwm los tswj qhov tseeb qhov tseeb.

GNEE Steel muab siab- zog 17-4PH (1.4418) stainless hlau nyob rau hauv bar, phaj, forging, hlau, thiab precision hauv av cov ntaub ntawv, muaj nyob rau hauv ntau yam kub-kho mob (A, H900, H1025, H1150) kom tau raws li koj cov kev cai tsim tshwj xeeb. Peb muab tag nrho cov ntaub ntawv pov thawj (EN 10204 3.1) thiab kev txhawb nqa suav nrog kev txiav, machining, sib tsoo, thiab kev kho cua sov. Yog tias koj muaj kev xav tau, thov koj xav tiv tauj peb.