15-5 stainless hlau yog martensitic, nag lossis daus-hardening khoom nrog chromium, npib tsib xee thiab tooj liab. Nws feem ntau yog thawj qhov kev xaiv hauv kev lag luam aerospace rau fasteners thiab cov khoom siv. Nws cov qauv tshwj xeeb muab kev ua kom muaj zog thiab zoo dua corrosion dua li nws cov thawj, 17-4 PH. Ob qho tib si kev tswj hwm thiab txo qis ntawm delta ferrite piv rau 17-4 stainless hlau pab txhawb kom muaj zog ntau dua ntawm 15-5. Lub alloy yog ntxiv dag zog los ntawm qhov kub thiab txias kev kho mob uas precipitates tooj liab uas muaj theem nyob rau hauv alloy. 15-5 PH muaj peev xwm ua tau raws li cov khoom siv dag zog uas xav tau hauv kev lag luam aerospace thiab nuclear.

15-5 PH tshuaj muaj pes tsawg leeg

	Element	Feem pua ​​ntawm qhov hnyav
C	Cov pa roj carbon	0.07 max
Cr	Chromium	14-15.5 Nws
Cu	Tooj	2.5-4.5 Nws
Fe	Hlau	Tshuav
Si	Silicon	1.00 mas
S	Sulfur	0.03 max
Ni	Nickel	3.5-5.5 Nws
Mn	Manganese	1.0 max
P	Phosphorus	0.04 max
Nb Ta	Niobium ntxiv rau Tantalum	0.15–0.45 dr hab