17-4PH Stainless Hlau Phaj - Siab-Strength Precipitation Hardening Alloy

 

General Properties

Alloy 17-4PH (UNS S17400), Hom 630, yog chromium-nickel-tooj liab nag lossis daus-hardening martensitic stainless hlau nrog ib qho ntxiv ntawm niobium. 17-4PH ua ke siab zog thiab hardness nrog corrosion kuj zoo.

Cov hlau yog muab tso rau hauv qhov kev daws teeb meem annealed (Condition A). Nws yuav tsum tsis txhob siv ntawm qhov kub siab tshaj 572℃F (300 degree) lossis rau kev pabcuam cryogenic. Cov cuab yeej zoo tshaj plaws tuaj yeem tau txais los ntawm kev siv cov alloy rau hnub nyoog hardening kev kho cua sov. Kev kho cua sov hauv 900℃F (482 degree) ua rau lub zog siab tshaj plaws.

Lub corrosion kuj ntawm Alloy 17-4PH yog piv rau 304 stainless hlau nyob rau hauv feem ntau ib puag ncig, thiab yog feem ntau superior rau 400 series stainless hlau. Nws yog siv nyob rau hauv daim ntawv thov qhov twg ua ke ntawm nruab nrab corrosion kuj thiab txawv txawv zog yuav tsum tau.

 

Tshuaj ntsuam xyuas

Qhov hnyav % (tag nrho cov txiaj ntsig yog qhov siab tshaj plaws tshwj tsis yog tias muaj lwm yam qhia)

Chromium	15.0 feeb-17.5 max.	Phosphorus	0.04
Nickel	3.0 feeb-5.0 max.	Sulfur	0.03
Tooj	3.0 feeb-5.0 max.	Silicon	1.0
Cov pa roj carbon	0.07	Nobium plus Tantalum	0.15 feeb - 0.45 max.
Manganese	1.0	Hlau	Tshuav