General Properties
Alloy 347 ni a diduro, austenitic, chromium, irin ti o ni awọn columbium eyiti ngbanilaaye fun awọn imukuro ti carbide ojoriro, ati, Nitori, intergranualr ipata. Alloy 347 ti wa ni diduro nipasẹ awọn afikun ti chromium ati tantalum ati ki o nfun ti o ga asiwere ati wahala rupture-ini ju alloy 304 ati 304L eyi ti o le tun ti wa ni lo fun awọn ifihan ibi ti ifoyeyeni ati intergranualr ipata ni o wa ti ibakcdun. Awọn afikun ti columbium tun gba Alloy 347 lati ni o tayọ ipata resistance, ani superior si wipe ti alloy 321. 347H ni awọn ti o ga erogba tiwqn fọọmu ti Alloy 347 ki o si se afihan dara si ga otutu ati asiwere-ini.
Ni pato: UNS S34700 / S34709
ohun elo:
Alloy 347 ti wa ni nigbagbogbo lo fun awọn paromolohun ti ẹrọ, eyi ti o gbọdọ wa ni gbe ni iṣẹ labẹ àìdá daa ipo, ati ki o jẹ tun wọpọ si awọn Epo ilẹ refining ise. Awọn ohun elo ti àìyẹsẹ lo Alloy 347 ni:
1.High otutu kemikali lakọkọ
2.Heat pipe Falopiani
3.High otutu nya iṣẹ
4.High titẹ nya pipes
5.Radiant superheaters
6.Boiler Falopiani
7.Heavy ojuse eefi awọn ọna šiše
8.General refinery fifi ọpa
awọn ajohunše:
1.ASTM / ASME: UNS S34700 / S34709
2.EURONORM: FeMi35Cr20Cu4Mo2
3.DIN: 2,4660
4.Offers iru resistance to gbogbogbo, ìwò ipata bi Alloy 304
5.Used fun awọn ohun elo ibi ti irin bi Alloy 304 wa ni ipalara si intergranualr ipata
6 .Generally lo fun eru welded itanna eyi ti o le wa ko le annealed ati fun awọn eroja ti o wa ni o ṣiṣẹ laarin 800 si 150 ° F (427 tO 816 ° C)
7.Alloy 347 ti o pọju lori alloy 321 fun olomi ati awọn miiran kekere otutu ayika
8.Primarily lo ni ga otutu agbegbe ibi ti resistance to ifoyeyeni jẹ pataki, ni Tan dena intergranualr ipata ni isalẹ awọn ipele
9.Susceptible to tenumo ipata wo inu
10.Exhibits ifoyina resistance iru si gbogbo awọn miiran 18-8 austenitic alagbara, steels
Ipata Resistance:
Weldability
1.Austenitic alagbara, steels ti wa ni kà lati wa ni awọn julọ weldable kuro ninu gbogbo ga alloy steels
2.Can wa ni welded nipa gbogbo seeli ati resistance alurinmorin lakọkọ
3.Annealing otutu ibiti o ti wa ni 1800 to 2000 ° F
4.May wa ni wahala iderun annealed laarin awọn carbide ojoriro ibiti o ti 800 to 1500 ° F laisi eyikeyi ewu ti ọwọ intergranualr ipata
5.Cannot le nipa ooru itọju
Heat itọju
Chemical Properties:
|
C |
Kr |
Mi Ni |
ni |
P |
S |
si |
Cb / Ta |
347 |
0,08 max |
min: 17,0 |
2.0 max |
min: 9.0 |
0.04 max |
0.30 |
0.75 |
min: 10x C |
347H |
min: 0.04 |
min: 17,0 |
2.0 max |
min: 9.0 |
0.03 max |
0.30 |
0.75 |
min: 10x C |
Darí Properties:
ite |
Fifẹ Okun ksi (Mpa) min |
Ikore Okun 0.2% ksi aiṣedeede ksi (Mpa) min |
Elongation (% ni 50mm) min |
Líle (Brinell) Max |
Líle (Rockwell B) Max |
347 / 347H |
75 |
30 |
40 |
201 |
95 |
Ti ara Properties:
Iwuwo |
Olùsọdipúpọ ti |
Gbona iba ina elekitiriki BTU / hr-ft- ° F |
Specific Heat BTU / lb m - ° F |
Modulu ti elasticity (annealed) 2 -psi |
|
ni 68 ° F | ni 68 - 212 ° F | ni 68 - 1832 ° F | 68-932 ° F | ni 32 - 212 ° F | ni ẹdọfu (E) |
0,288 | 9.2 | 11.4 | 14.7 | 0,12 | 28 x 10 6 |