ALOY 825 AKWỤKWỌ data ihe onwunwe
Nkọwa ngwaahịa
Ọkpụrụkpụ dị maka Alloy 825:
| 3/16" | 1/4" | 3/8" | 1/2" | 5/8" | 3/4" |
| 4.8mm | 6.3mm | 9.5mm | 12.7 mm | 15.9 mm | 19 mm |
|
| |||||
| 1" | 1 1/4" | 1 1/2" | 1 3/4" | 2" |
|
| 25.4mm | 31.8 mm | 38.1 mm | 44.5 mm | 50.8 mm |
|
Alloy 825 (UNS N08825) bụ ihe austenitic nickel-iron-chromium alloy na mgbakwunye nke molybdenum, ọla kọpa na titanium. Emepụtara ya iji nye nguzogide corrosion pụrụiche na ma oxidizing na mbelata gburugburu. Alloy ahụ na-eguzogide nrụgide chloride-corrosion cracking na pitting. Mgbakwunye titanium na-eme ka Alloy 825 guzosie ike megide mmetụta uche na ọnọdụ dị ka welded na-eme ka alloy na-eguzogide ọgụ na intergranular mgbe ekpughere ya na okpomọkụ na nso nke ga-eme ka igwe anaghị agba nchara. Nmepụta nke Alloy 825 bụ ihe atụ nke nickel-base alloys, na ihe onwunwe na-adị ngwa ngwa na weldable site n'ụdị dị iche iche.
Mpempe akwụkwọ nkọwapụta
maka Alloy 825 (UNS N08825)
W.Nr. 2.4858:
Nickel-Iron-Chromium Alloy Austenitic Emepụtara maka Nguzogide Nrụrụ Pụrụ Iche na Ma Oxidizing na Mbelata gburugburu.
● Njirimara zuru oke
● Ngwa
● Ụkpụrụ
● Nyocha Chemical
● Njirimara anụ ahụ
● Ihe eji arụ ọrụ
● Nguzogide corrosion
● Nchegbu-Ebibi Nguzogide Nguzogide
● Nguzogide Na-emebi emebi
● Nguzogide corrosion Crevice
● Nguzogide corrosion intergranular
Njirimara izugbe
Alloy 825 (UNS N08825) bụ ihe austenitic nickel-iron-chromium alloy na mgbakwunye nke molybdenum, ọla kọpa na titanium. Emepụtara ya iji nye nguzogide pụrụ iche nye ọtụtụ ebe na-emebi emebi, ma oxidizing na ibelata.
Ọdịnaya nickel nke Alloy 825 na-eme ka ọ na-eguzogide chloride stress-corrosion cracking, yana jikọtara ya na molybdenum na ọla kọpa, na-enye ezigbo nguzogide corrosion na-ebelata gburugburu ma e jiri ya tụnyere austenitic igwe anaghị agba nchara. Ọdịnaya chromium na molybdenum nke Alloy 825 na-enye iguzogide pitting chloride, yana iguzogide ikuku ikuku dị iche iche. Mgbakwunye nke titanium na-eme ka alloy guzosie ike megide mmetụta uche na ọnọdụ dị ka-welded. Nkwụsi ike a na-eme Alloy 825 na-eguzogide ọgụ nke intergranular mgbe ekpughere ya na oke okpomọkụ nke ga-eme ka igwe anaghị agba nchara kwụsie ike.
Alloy 825 na-eguzogide corrosion n'ọtụtụ usoro gburugburu ebe obibi gụnyere sulfuric, sulfurous, phosphoric, nitric, hydrofluoric na organic acids na alkalis dị ka sodium ma ọ bụ potassium hydroxide, na ngwọta acidic chloride.
Nrụpụta nke Alloy 825 bụ ihe atụ nke nickel-base alloys, nke nwere ngwa ngwa ngwa ngwa yana weldable site na usoro dị iche iche.
Ngwa
● Njikwa mmetọ ikuku
● Ndị na-ehicha ihe
● Ngwa eji arụ ọrụ kemịkal
● Acid
● Alkali
● Ngwa Usoro Nri
● Ngwá agha nuklia
● Nhazigharị mmanụ ụgbọala
● Ihe mgbaze mmanụ ụgbọala
● Ijikwa ihe mkpofu
● Mpụta mmanụ na gas dị n'ụsọ mmiri
● Ndị na-agbanwe mmiri mmiri
● Sistemụ ọkpọkọ
● Akụrụngwa gas
● Nhazi ọla
● Ngwa Nnụcha ọla
● Nnụcha mmanụ ala
● Ndị na-agbanwe ọkụ ikuku jụrụ oyi
● Ngwa eji eji igwe eme ihe
● Igwe ọkụ ọkụ
● Ụgbọ mmiri
● Akpa
● Nkata
● Mkpofu ihe mkpofu
● Sistemụ ọkpọkọ nke ọma ịgba ọgwụ
Ụkpụrụ
ASTM.................B 424
ASME.................SB 424
Nyocha kemịkalụ
Ọnụ ahịa ahụkarị (ibu %)
| nikel | 38.0 min.–46.0 kacha. | Ígwè | 22.0 min. |
| Chromium | 19.5 min.–23.5 max. | Molybdenum | Nkeji 2.5–3.5 kacha. |
| Molybdenum | 8.0 nkeji - 10.0 max. | Ọla kọpa | 1.5 min.–3.0 max. |
| Titanium | 0.6 min.–1.2 max. | Carbon | 0.05 kacha. |
| Niobium (gbakwunyere Tantalum) | 3.15 min.-4.15 max. | Titanium | 0.40 |
| Carbon | 0.10 | Manganese | 1.00 kacha. |
| sọlfọ | 0.03 kacha. | Silikoni | 0,5 kacha. |
| Aluminom | 0.2 kacha. |
|
Njirimara anụ ahụ
Njupụta
0.294 lbs / n'ime 3
8.14 g/cm3
Okpomọkụ akọwapụtara
0.105 BTU/lb-°F
440 J/kg-°K
Modul nke Elasticity
28.3 psi x 106 (100°F)
196 MPa (38°C)
Ike ndọta
1.005 Oersted (μ na 200H)
Nrụpụta okpomọkụ
76.8 BTU/hr/ft2/ft-°F (78°F)
11.3 W/m-°K (26°C)
Oke agbaze
2500 - 2550°F
1370-1400C
Eletriki Resistivity
678 Ohm okirikiri mil/ft (78°F)
1.13 μcm (26°C)
Ọnụọgụ Linear nke Mgbasa ọkụ ọkụ
7.8 x 10-6 na / na°F (200°F)
4 m/m°C (93°F)
Ihe eji arụ ọrụ
Ngwongwo arụrụ arụ nrụnye okpomọkụ nke ime ụlọ a na-ahụkarị, ewepụla igwe igwe
| Mpụta Ike 0.2% kwụsịrị | Oke tensile Ike | Ogologo oge na 2 in. | Isi ike | ||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (nkeji) | Rockwell B |
| 49,000 | 338 | 96,000 | 662 | 45 | 135-165 |
Alloy 825 nwere ezigbo ihe eji arụ ọrụ sitere na cryogenic ruo na oke okpomọkụ dị elu. Ngosipụta na okpomọkụ dị elu karịa 1000°F (540°C) nwere ike ime ka mgbanwe dị na microstructure nke ga-ebelata ductility na mmetụta ike. N'ihi ya, Alloy 825 ekwesịghị tinye n'ọrụ na okpomọkụ ebe creep-rupture Njirimara bụ imewe ihe. Enwere ike iwusi alloy ike nke ukwuu site na ọrụ oyi. Alloy 825 nwere mmetụta dị mma n'ike na ụlọ okpomọkụ, ma na-ejigide ike ya na okpomọkụ cryogenic.
Tebụl 6 - Mmetụta Ike nke Igwe Ọdụdọ Charpy
| Okpomọkụ | Nhazi | Ike mmetụta* | ||
| °F | Celsius C |
| ft-lb | J |
| Ime ụlọ | Ime ụlọ | Ogologo ogologo | 79.0 | 107 |
| Ime ụlọ | Ime ụlọ | Transverse | 83.0 | 113 |
| -110 | -43 | Ogologo ogologo | 78.0 | 106 |
| -110 | -43 | Transverse | 78.5 | 106 |
| -320 | -196 | Ogologo ogologo | 67.0 | 91 |
| -320 | -196 | Transverse | 71.5 | 97 |
| -423 | -253 | Ogologo ogologo | 68.0 | 92 |
| -423 | -253 | Transverse | 68.0 | 92 |
Nguzogide corrosion
Àgwà kachasị pụta ìhè nke Alloy 825 bụ nguzogide corrosion ya kacha mma. Na ma oxidizing na ibelata gburugburu, alloy na-eguzogide corrosion izugbe, pitting, crevice corrosion, intergranular corrosion na chloride stress-corrosion cracking.
Iguzogide ihe ngwọta sulfuric acid ụlọ nyocha
| Alloy | Ọnụego nrụrụ n'ime ụlọ nyocha na-esi mmiri Sulfuric Acid Solution Mils/Afọ (mm/a) | ||
| 10% | 40% | 50% | |
| 316 | 636 (16.2) | >1000 (>25) | >1000 (>25) |
| 825 | 20 (0.5) | 11 (0.28) | 20 (0.5) |
| 625 | 20 (0.5) | Achọghị | 17 (0.4) |
Nchegbu - Nguzogide nbibi
Ọdịnaya nickel dị elu nke Alloy 825 na-enye nnukwu nguzogide chloride-corrosion cracking. Agbanyeghị, na nnwale magnesium chloride na-esi oke ike, alloy ga-agbawa ka ogologo oge kpughee ya na pasentị nke nlele. Alloy 825 na-arụ ọrụ nke ọma na nyocha ụlọ nyocha dị obere. Tebụl na-esonụ na-achịkọta arụmọrụ alloy.
Iguzogide chloride nrụgide corrosion mgbawa
| A nwalere Alloy dị ka U-Bend Samples | ||||
| Ngwọta ule | Alloy 316 | SSC-6MO | Alloy 825 | Alloy 625 |
| 42% Magnesium chloride (osi) | Daa | Ngwakọta | Ngwakọta | guzogide |
| 33% Lithium Chloride (na-esi esi) | Daa | guzogide | guzogide | guzogide |
| 26% sodium chloride (osi) | Daa | guzogide | guzogide | guzogide |
Ngwakọta - Akụkụ nke ihe nlele ndị a nwalere dara n'ime awa 2000 nke ule. Nke a bụ ihe na-egosi ọkwa dị elu nke nguzogide.
Nguzogide nbibi
Ọdịnaya chromium na molybdenum nke Alloy 825 na-enye ọkwa dị elu nke iguzogide pitting chloride. N'ihi nke a, enwere ike iji alloy mee ihe na gburugburu chloride dị elu dị ka mmiri oké osimiri. Enwere ike iji ya mee ihe na ngwa ebe enwere ike ịnabata ụfọdụ pitting. Ọ dị elu karịa igwe anaghị agba nchara dị ka 316L, Otú ọ dị, na ngwa mmiri mmiri Alloy 825 adịghị enye otu ọkwa nke nguzogide dị ka SSC-6MO (UNS N08367) ma ọ bụ Alloy 625 (UNS N06625).
Nguzogide nrụrụ Crevice
Iguzogide chloride pitting na Crevice corrosion
| Alloy | Okpomọkụ mmalite na Crevice Mmegide mmebi* °F (°C) |
| 316 | 27 (-2.5) |
| 825 | 32 (0.0) |
| 6MO | 113 (45.0) |
| 625 | 113 (45.0) |
* Usoro ASTM G-48, 10% Ferric Chloride
Nguzogide corrosion intergranular
| Alloy | Na-esi 65% Nitric Acid ASTM Usoro A 262 Omume C | Na-esi 65% Nitric Acid ASTM Usoro A 262 Omume B |
| 316 | 34 (.85) | 36 (.91) |
| 316L | 18 (.47) | 26 (.66) |
| 825 | 12 (.30) | 1 (.03) |
| SSC-6MO | 30 (.76) | 19 (.48) |
| 625 | 37 (.94) | Achọghị |
