Hoʻolauna o ke kila kila 17-4ph

ʻO ka papa kila kila 17-4 (630) he mea kila kila paʻakikī chromium-copper i hoʻohana ʻia no nā noi e koi ana i ka ikaika kiʻekiʻe a me kahi pae kūpono o ke kūpaʻa ʻana i ka pala. ʻO ka ikaika kiʻekiʻe
mālama ʻia a hiki i kahi o 600 degere Fahrenheit (316 degere
Kelekia).

Nā Waiwai Laulā

ʻO ke kila kila kila ʻO ka Alloy 17-4 PH he kila kila martensitic paʻakikī me nā hoʻohui Cu a me Nb/Cb. Hoʻohui ka papa i ka ikaika kiʻekiʻe, ka paʻakikī (a hiki i 572°F / 300°C), a me ka pala.
ke kū'ē ʻana.

ʻIkepili Kemika

Kalapona	0.07 ka nui loa
Chromium	15 – 17.5
Keleawe	3 – 5
Hao	Kaulike
Manganese	1 ka nui loa
Nikala	3 – 5
Niobium	0.15 – 0.45
Niobium+Tantalum	0.15 – 0.45
ʻO ka phosphorus	0.04 kiʻekiʻe loa
Silika	1 ka nui loa
Sulfur	0.03 kiʻekiʻe

Ke kū'ē ʻana i ka palaho

ʻOi aku ka maikaʻi o ke kūpaʻa ʻana o ka Alloy 17-4 PH i nā hoʻouka ʻino ma mua o nā kila kila paʻakikī maʻamau a ua like ia me ka Alloy 304 ma ka hapa nui o nā mea hana.

Inā he mau pilikia kūpono o ka haki ʻana o ka corrosion stress, pono e koho ʻia nā mahana ʻelemakule kiʻekiʻe ma luna o 1022°F (550°C), ʻoi aku ka maikaʻi o 1094°F (590°C). ʻO 1022°F (550°C) ka mahana hoʻomaʻamaʻa kūpono loa i loko o ka media chloride.

ʻO 1094°F (590°C) ka mahana hoʻomaʻamaʻa kūpono loa i nā pāpaho H2S.

Hiki ke hoʻopilikia ʻia ka mea hao i ka māwae a i ʻole ka hoʻouka ʻana i ka lua inā e pili ana i ka wai kai kūpaʻa no kekahi manawa lōʻihi.

He kūpaʻa ia i ka pala i loko o kekahi mau ʻoihana kemika, ʻaila, pepa, waiū a me ka hana meaʻai (like me ka papa 304L).

Nā noi

· Ma waho o ke kai (nā pepa kini, nā kahua papahele helikopter, a pēlā aku)· ʻOihana meaʻai· ʻOihana pulp a me ka pepa· Aerospace (nā pahi turbine, a pēlā aku)· Nā ʻāpana mīkini · Nā pahu ʻōpala nukelea

Nā Kūlana

· ASTM A693 papa 630 (AMS 5604B) UNS S17400· EURONORM 1.4542 X5CrNiCuNb 16-4· AFNOR Z5 CNU 17-4PH· DIN 1.4542