17-4 stainless ke martensitic e thata-thata lilemo e kopanyang matla a phahameng le khanyetso ea kutu ea tšepe e sa hloekang.Ho thatafala ho finyelloa ka nako e khutšoanyane, phekolo e bonolo ea mocheso o tlaase.Ho fapana le litšepe tse tloaelehileng tsa martensitic tse se nang tšepe, joalo ka mofuta oa 410, 17-4 o khona ho chesehela.Matla, ho hanyetsa kutu le masela a nolofalitsoeng a ka etsa hore 17-4 e se ke ea e-ba sebaka se theko e tlaase bakeng sa litšepe tse matla tsa carbon hammoho le limaraka tse ling tse sa hloekang.
Ka tharollo ea ho phekola mocheso, 1900 ° F, tšepe e na le austenitic empa e fetoha ho ea mohahong o tlaase oa carbon martensitic nakong ea ho pholile ho ea mocheso oa kamore.Phetoho ena ha e fele ho fihlela mocheso o theohela ho 90°F.Ho futhumatsa ho latelang ho mocheso oa 900-1150 ° F bakeng sa hora e le 'ngoe ho isa ho tse' nè pula e matlafatsa motsoako.Kalafo ena e thata e boetse e halefisa sebopeho sa martensitic, ho eketsa ductility le ho tiea.
C | Cr | Ni | Si | Mn | P | S | Cu | Nb+Ta |
≤0.07 | 15.0-17.5 | 3.0-5.0 | ≤1.0 | ≤1.0 | ≤0.035 | ≤0.03 | 3.0-5.0 | 0.15-0.45 |
Botenya | Matla a khethehileng a mocheso | Sebaka se qhibilihang | Thermal conductivity | Modulase oa elastic |
7.78 | 502 | 1400-1440 | 17.0 | 191 |
Boemo | бb/N/mm2 | б0.2/N/mm2 | δ5/% | ψ | HRC | |
Pula | 480 ℃ botsofali | 1310 | 1180 | 10 | 35 | ≥40 |
550℃ botsofali | 1070 | 1000 | 12 | 45 | ≥35 | |
580 ℃ botsofali | 1000 | 865 | 13 | 45 | ≥31 | |
620℃botsofali | 930 | 725 | 16 | 50 | ≥28 |
AMS 5604, AMS 5643, AMS 5825,ASME SA 564, ASME SA 693, ASME SA 705, ASME Type 630,ASTM A 564, ASTM A 693, ASTM A 705, ASTM Type 630
Boemo A - H1150,ISO 15156-3,NACE MR0175,S17400,UNS S17400,W.Nr./EN 1.4548
•Ho bonolo ho fetola boemo ba matla, ke ka liphetoho tsa mokhoa oa ho phekola mocheso ho fetolaphetoho ea karolo ea martensite le botsofali
kalafo ya tshepe ho etsa pula e thatafatsa mohato.
•Corrosion mokhathala ho hanyetsa le ho thibela metsi.
•Welding:Boemong ba tharollo e tiileng, botsofali kapa ho tsofala ho feta tekano, alloy e ka chesetsoa ka tsela e sa tsitsang, ntle le ho futhumatsa pele.
Haeba a batla matla a tjheseletsa haufi le matla a tšepe a botsofali a thatafalloa, joale motsoako o lokela ho ba tharollo e tiileng le phekolo ea botsofali ka mor'a ho cheselletsa.
Alloy ena e boetse e loketse brazing, 'me mocheso o motle ka ho fetisisa oa brazing ke mocheso oa tharollo.
•Khanyetso ea kutu:Alloy corrosion resistance e phahametse tšepe efe kapa efe e thata e sa tsitsang, ka metsing a tsitsitseng habonolo a hlokofatsoa ke khoholeho ea mobu kapa mapheo.
•Li-platform tsa offshore, mokato oa helikopthara, lipolanete tse ling.
•Indasteri ea lijo.
•Indasteri ea pampiri le pampiri.
•Sebaka (lehare la turbine).
•Likarolo tsa mochini.
•Libarele tsa litšila tsa nyutlelie.