Ohun elo irin alagbara 17-4PH

17-4PH ti wa ni imurasilẹ gbona eke. Lakoko itọju ooru tabi ayederu, awọn agbegbe aabo ti o ni erogba tabi nitrogen yẹ ki o yago fun. Awọn eroja wọnyi le gba sinu oju irin ati fun awọ austenitic rirọ. Ti oju-aye aabo ba nilo argon tabi helium ni iṣeduro.

Alupupu naa tun ni lile ti o dara nigbati a ba ṣe welded, lakoko ti awọn itọju ooru kekere-kekere dinku idinku ati wiwọn. Ni afikun, 17-4PH rọrun lati ṣe ẹrọ ati iṣelọpọ.

Ṣeun si awọn ohun-ini anfani, 17-4PH rii lilo ni awọn ile-iṣẹ lọpọlọpọ. Awọn ẹya aṣoju pẹlu awọn edidi ẹrọ, patch epo, ati awọn ọpa fifa.

Machinability 17-4PH le jẹ ẹrọ ni mejeeji ipo annealed ojutu ati ipo lile ojoriro. Nitori iwọn otutu itọju ooru ti o kẹhin jẹ kekere, 17-4PH le ṣe ẹrọ si iwọn ipari ni ipo annealed ati lẹhinna darugbo laisi iyipada iwọn pataki tabi iwọn ayafi ti paati ba tobi, nigbati o yẹ ki o ṣe iyọọda fun ihamọ lori ogbo.
Ni awọn annealed majemu machining jẹ nikan marginally o yatọ si 300 jara austenitic alagbara, irin. Ni ipo H900 oṣuwọn ẹrọ jẹ 60% ti iyẹn fun ohun elo annealed.

OHUN OJU

GRADES	SS316	17-4PH
Erogba	0.05	0.06
Manganese	2	0.9
phosphorous	0.045	0.03
Efin	0.03	0.02
Silikoni	N/A	0.9
Ejò, columbium, ati Tantalum	N/A	4
Molybdenum	2.1	N/A
Nickel	8	4
Chromium	18	17.5

hysical Properties ti Irin alagbara, irin 17-4PH

Ohun ini	Imperial	Metiriki
Yo Range	2560-2625 °F	1404-1440 °C
Ooru pato	0.11 Btu /lb.-°F	460 Joules / gg-K
Specific iwuwo	0,282 lb / in3	7.8 g /cm3
Itanna Resistivity	38.6 µΩ ninu	98 µΩ cm
Imugboroosi Laini ti Imugboroosi Gbona (70 °F si 200 °F) (21 °C si 93 °C)	6 [ni /ni/°F·106]	10.8 [μm / m·°C]
Imugboroosi Laini ti Imugboroosi Gbona (70 °F si 400 °F) (21 °C si 204 °C)	6 [ni /ni/°F·106]	10.8 [μm / m·°C]
Imugboroosi Laini ti Imugboroosi Gbona (70 °F si 600 °F) (27 °C si 316 °C)	6.2 [ninu /ni/°F·106]	11.2 [μm / m·°C]
Olusọdipalẹ Laini ti Imugboroosi Gbona (70 °F si 800 °F) (21 °C si 427 °C)	6.3 [ninu /ni/°F·106]	11.2 [μm / m·°C]
Imudara Ooru (@ 300 °F) (@ 149 °C)	124 Btu / (wakati/ft² /ni/°F)	17.9 [W/ m-K]
Imudara Ooru (@ 500 °F) (@ 260 °C)	135 Btu / (wakati/ft² /ni/°F)	19.5 [W/ m-K]
Imudara Ooru (@ 860 °F) (@ 460 °C)	156 Btu / (wakati/ft² /ni/°F)	22.5 [W/ m-K]
Imudara Ooru (@ 900 °F) (@ 482 °C)	157 Btu / (wakati/ft² /ni/°F)	22.6 [W/ m-K]
Ipin Poisson (Ipo H900)	0.272	0.272
Modulu ti Rirọ (Ipo H900)	28 x 106 ksi	197 x 103 MPa
Modulu ti Rigidity ni Torsion	9.68 x 103 ksi	67 x 103 MPa

Irin alagbara, irin 17-4PH Mechanical Properties

Ohun ini	Imperial	Metiriki
Gbẹhin Fifẹ Agbara	23.300 psi	160 MPa
Agbara Ikore (0.02%)	16.680 psi	115 MPa
Ilọsiwaju (% ni 2 '')	5%	5%
Rockwell líle C	35	35

Ooru Itọju

Irin alagbara, irin 17-4PH wa ninu ojutu annealed majemu ni 1900 °F (1038 °C) ati ki o si air-tutu si 90 °F (32 °C).

Sibẹsibẹ, awọn itọju ooru ni afikun le ṣe agbejade ọpọlọpọ lile ati awọn ipele lile. Awọn itọju ti o wọpọ julọ ni a ṣe akojọ ni tabili ni isalẹ.

Ipo	Iwọn otutu [± 15 °F (± 8.4 °C)]	Ọna Itutu ati Iye akoko
H 900	900 °F (482 °C)	Itutu afẹfẹ fun wakati 1
H 925	925 °F (496 °C)	Itutu afẹfẹ fun awọn wakati 4
H 1025	1025°F (551°C)	Itutu afẹfẹ fun awọn wakati 4
H 1075	1075 °F (580 °C)	Itutu afẹfẹ fun awọn wakati 4
H 1100	1100 °F (593 °C)	Itutu afẹfẹ fun awọn wakati 4
H 1150	1150°F (621°C)	Itutu afẹfẹ fun awọn wakati 4
H 1150 + 1150	1150°F (621°C) tele mi 1150°F (621°C)	Itutu afẹfẹ fun awọn wakati 4 tele mi Itutu afẹfẹ fun awọn wakati 4
H 1150-M	1400°F (760°C) tele mi 1150°F (621°C)	Itutu afẹfẹ fun awọn wakati 2 tele mi Itutu afẹfẹ fun awọn wakati 4