17-4 PH stainless hlau khoom.pdf
Tso lus
17-4ph khoom yog dab tsi?
17-4 PH (Precipitation Hardening) yog ntau yam, martensitic stainless hlau paub txog nws cov kev sib xyaw ua ke zoo ntawm lub zog siab, zoo corrosion kuj, thiab zoo txhua yam khoom mus txog 600℃F (316℃). Nws lub npe qhia txog nws cov muaj pes tsawg leeg (kwv yees . 17% chromium, 4% npib tsib xee), thiab nws tuaj yeem kho cua sov kom ua tiav ntau theem, ua rau nws nrov rau kev thov hauv aerospace, roj & roj, khoom siv kho mob, thiab kev ua zaub mov.
Dab tsi yog cov khoom tseem ceeb ntawm 17-4 PH stainless hlau?
Corrosion Resistance ntawm 17-4 PH Stainless Hlau
17-4 PH muaj kwv yees li 16–18% Cr thiab tsis muaj molybdenum, nrog rau PREN tus nqi kwv yees li 24–30. Nws cov corrosion kuj nyob rau hauv huab cua, dej tshiab, thiab me ntsis acidic ib puag ncig zoo ib yam li 304 stainless hlau. Txawm li cas los xij, nws qhov kev tiv thaiv rau pitting thiab crevice corrosion nyob rau hauv ib puag ncig uas muaj chloride ions yog qis dua li ntawm 316 (316 PREN ~ 24-26, thiab muaj 2-3% Mo), ua rau nws tsis haum rau kev sib cuag nrog dej hiav txwv los yog muaj zog acids ntev.
17-4 PH Stainless Hlau Lub Zog thiab Hardness
Tom qab kev kho mob siab tshaj plaws (H900 mob), 17-4 PH (EN 1.4542, UNS S17400) stainless hlau muaj lub zog tensile ntawm Ntau dua lossis sib npaug rau 1310 MPa, lub zog tawm los ntawm ntau dua lossis sib npaug rau 1170 MPa, thiab hardness txog li 38 HRC ntau dua li ntawm 3, uas yog ntau dua 1. lub zog ~ 515 MPa, yield zog Ntau dua los yog sib npaug rau 205 MPa), thaum tuav tsim nyog toughness.
17-4 PH Stainless hlau cua sov kho
Kev kho cua sov ntawm 17-4 PH Stainless Hlau
Qhov kev kho cua sov zoo tshaj plaws suav nrog kev daws teeb meem ntawm 1040-1065℃ua raws li cov dej nrawm nrawm, thiab tom qab ntawd kev laus ntawm 480-620℃(feem ntau 482 degree, H900) kom ua tiav qhov siab tshaj plaws thiab hardness. Qhov sib txawv ntawm kev laus tuaj yeem kho lub zog - sib npaug toughness; Piv txwv li, tus mob H1150 txo hardness rau kwv yees li 277 HB, yooj yim rau machining.
Machining Properties ntawm 17-4 PH Stainless Hlau
Hauv cov tshuaj annealed + qis-kub lub xeev muaj hnub nyoog (xws li H1150M), qhov hardness qis dua (~277 HB), ua rau muaj kev ua haujlwm zoo. Txawm li cas los xij, nyob rau hauv lub siab -hardness aged xeev (H900, 38 HRC), kev txiav ceev yuav tsum tau txo los ntawm kwv yees li 30-40%, thiab cov cuab yeej nruj thiab nquag hloov cuab yeej yuav tsum tau zam kom tsis txhob muaj cov cuab yeej hnav thiab tawv tawv.
Cov khoom ntawm 17-4 Stainless Hlau
17-4 stainless hlau yog cais nyob rau hauv martensitic tsev neeg ntawm stainless hlau. Nkag siab txog cov khoom ntawm 17-4 stainless hlau yog qhov tseem ceeb rau kev ntsuas nws qhov tsim nyog rau cov ntawv thov tshwj xeeb. Nov yog qee cov khoom siv tseem ceeb:
|
Qhov xwm txheej |
Tensile zog (psi) |
Yield zog (psi) |
Elongation hauv 2 " |
Kev txo qis ntawm cheeb tsam |
Rockwell "C" Hardness |
|---|---|---|---|---|---|
|
A (annealed) |
150,000 |
110,000 |
10% |
40% |
34 |
|
H900 (hardened ntawm 900 degree) |
200,000 |
185,000 |
14% |
50% |
44 |
|
H1150 (Hardened ntawm 1150 degree |
145,000 |
125,000 |
19% |
60% |
33 |
AMS 5643 xav tau cov hauv qab no tom qab nag lossis daus kub kho ntawm 900℃F
|
Tensile zog (psi) |
190,000 Min. |
|
Yield zog (psi) |
170,000 Min. |
|
Elongation hauv 2 " |
10% Min. |
|
3" tuab thiab hauv qab (txo thaj tsam) |
40% Min. |
|
Tshaj 3 "mus rau 8" tuab (txo thaj tsam) |
35% Min. |
Welding Performance ntawm 17-4 PH Stainless Hlau
Nws tuaj yeem welded siv txoj hauv kev xws li TIG, MIG, thiab kev siv vuam tsis zoo, tab sis tom qab- vuam cua sov yuav tsum tau kho kom rov muaj zog. Yog hais tias vuam nyob rau hauv cov laus mob, overheating yuav tsum tau zam los tiv thaiv lub zos softening los yog degradation ntawm cov khoom.
Puas yog 17-4 PH stainless hlau sib nqus?
Yog lawm, 17-4 PH yog martensitic stainless hlau thiab yog sib nqus sib nqus, tsis zoo li austenitic stainless hlau xws li 304/316 (uas tsis yog hlau nplaum lossis tsis muaj zog hlau nplaum). Cov yam ntxwv no tuaj yeem siv rau kev txheeb xyuas cov khoom siv thiab hauv cov ntawv thov uas xav tau cov khoom sib nqus.
Qhov twg yuav 17-4 Stainless Hlau
Gnee tshwj xeeb hauv kev tsim thiab tsim khoom ntawm 17-4PH stainless hlau nyob rau hauv ntau yam duab, nrog rau daim hlau, tuav, raj, xov hlau thiab forgings, uas yog dav siv nyob rau hauv aerospace, tshuaj, roj thiab roj thiab lwm yam lag luam. Peb txhawb kev ua haujlwm txias, ua haujlwm kub, vuam, rov ua haujlwm thiab lwm yam txheej txheem kev kho mob, thiab muab ntau hom martensitic stainless hlau qib.
Yog tias koj txaus siab rau peb cov khoom thiab cov kev pabcuam, thov koj xav tiv tauj kuv. Peb pab neeg yeej ib txwm npaj los muab kev txhawb nqa thiab kev pab rau koj! Email:info@gneestainless.com
