321 dade a ɛnyɛ den .
321 yɛ titanium-astabilized austenitic stainless steel, a wɔakyekyɛ mu wɔ UNS S32100 ase. Nea ɛka ho no bi ne 17.0-19.0% Cr, 9.0-12.0% Ni, ne 0.15% a ɛba fam koraa titanium—a wɔde ka ho de kyekyere carbon, na esiw carbide nsu a ɛtɔ no ano.
Saa stabilization yi yi intergranular corrosion fi hɔ bere a wɔde 425-815℃(800-1500℃F) adi dwuma akyi, mfaso titiriw a ɛsen grades a ɛnyɛ nea ɛyɛ den no. Ɛma oxidation resistance a eye kyɛn so a ɛkɔ 870℃na ɛma ahoɔden kɔ so wɔ ɔhyew a ɛkɔ soro mu.
Nnuru a ɛwɔ mu .
|
C |
SI . |
Mn . |
P |
S |
CR . |
Ni . |
|
|
min . |
- |
- |
- |
- |
- |
17 |
9 |
|
Max . |
0.08 |
1 |
2 |
0.045 |
0.03 |
19 |
12 |
Nneɛma a ɛwɔ mu .
|
Muduro |
Melting point . |
Mfiridwuma mu nneɛma a ɛba fam koraa wɔ dan mu hyew mu . |
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|
Ahoɔden a ɛyɛ den sɛ ɛbɛtwetwe . |
Yield ahoɔden . |
Elongation . |
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|
g/cm .3 |
anoɔden |
RM N/mm .2 |
RP .0.2N/mm .2 |
A5% |
|
7.92 |
1400~1450 |
520 |
205 |
40% |
Su
321 dadeɛ a ɛnyɛ den yɛ titanium-ahumu a ɛyɛ den a ɛyɛ den a ɛsi 304 dadeɛ a ɛnyɛ den so denam 0.3%-0.7% titanium a wɔde ka ho so, na ɛma ne tumi a ɛko tia intergranular corrosion no tu mpɔn kɛseɛ. Titanium no pɛ sɛ ɛne carbon no bɔ mu ma ɛyɛ titanium carbides, na esiw chromium carbide osutɔ ano yiye wɔ sensitization temperature range no mu (425-860℃). Eyi ma ɛfata titiriw ma welded components ne soro-temperature applications (ɔsom hyew kɛse: 900℃), baabi a ɛkyerɛ adwumayɛ a ɛkyɛn so wɔ oxidizing acid media mu, ɛwom sɛ nea ɛko tia chloride stress corrosion no da so ara yɛ kakraa bi de. Nneɛma no kura adwumayɛ ne weldability a ɛte sɛ 304 (a ɛhwehwɛ titanium-a ɛwɔ filler metals mu), na ɛnyɛ magnetic wɔ solution-annealed tebea mu.
Applications .
Ɔsoro-Adeɛ a ɛwɔ ɔhyew mu:Wimhyɛn engine mu mframa a wɔde fi mu, ɔhyew sesa (tenten-bere a wɔde di dwuma a ɛba fam sen 800℃).
Nnuru a wɔde yɛ nnuru:Acid a ano yɛ den-nsu a ɛko tia, nsu afiri a wɔde weld ayɛ (titanium element siw chromium carbide osutɔ ano).
Kar ho adwumayɛ:Turbocharger housings, exhaust system no mu nneɛma.
Ahoɔden ho adwumayɛbea: .Boiler combustion chambers, a ɛkorɔn-ɔhyew nhama.
Tags a ɛyɛ hyew .: 321 dade a ɛnyɛ den, China 321 dade a ɛnyɛ den a wɔyɛ, wɔn a wɔde nneɛma ma, adwumayɛbea .
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