825 MATERIA DATA SHETS
depictio producti
Crassitudines Available for Alloy 825;
| 3/16" | 1/4" | 3/8" | 1/2" | 5/8" | 3/4" |
| 4.8mm | 6.3mm | 9.5mm | 12.7mm | 15.9mm | 19mm |
|
| |||||
| 1" | 1 1/4" | 1 1/2" | 1 3/4" | 2" |
|
| 25.4mm | 31.8mm | 38.1mm | 44.5mm | 50.8mm |
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Admisce 825 (UNS N08825) est austeniticum nickel-iro-chromium mixturae cum additionibus molybdeni, cupri et titanii.Peractum est ad resistentiam eximiae corrosionis in ambitus tum oxidizationis tum reducendo.stannum chloridi accentus-corrosioni crepuit et pituitae repugnat.Additio titanii admixtionem 825 stabilit contra sensitizationem in conditione quasi iuncta faciens stannum resistens ad oppugnationem intergranulares post exposita temperaturis in ambitu, qui ferrum immaculatum incorruptum sentiebat.Fabricatio Alloy 825 admixtionum nickel-base propria est, cum variis artificiis materialibus facile formabilis et conciliabilis.
Specificationem Sheet
for Alloy 825 (UNS N08825)
W.Nr.2.4858:
Austenitic Nickel-Iron Chromium Alloy Developed pro Eximia Corrosio Repugnantia in utroque Oxidizing et reducendo Environments
General Properties
Applications
signa
Chemical Analysis
Physica
Mechanica Properties
Corrosio Resistentia
Accentus-Corrosio Cracking resistentia
Pitting Resistentia
Crevice ROSIO Repugnantia
Corrosio intergranula resistentia
General Properties
Admisce 825 (UNS N08825) est austeniticum nickel-iro-chromium mixturae cum additionibus molybdeni, cupri et titanii.Enucleata est ad resistentiam eximiam multis ambitus mordentibus, tum oxidentibus et minuendis.
Nickel contentum Alloy 825 chloridi accentus-corrosioni crepitantis repugnantem facit, et cum molybdeno et cupro componitur, resistentiam praebet substantialiter emendatam corrosionem in ambitibus reducendis cum ferro austenitico conventionali incorrupto comparato.Chromium et molybdenum Alloy 825 resistentiam praebet ut chloridi pittacii, ac resistentia variis atmosphaerae oxidizationis.Additio titanii stannum contra sensitizationem in conditione as-iuncta stabilit.Haec stabilisatio efficit Alloy 825 repugnantem oppugnationi intergranulare post detectionem in range temperatura quae typice sentiat ferrum un-statum immaculatum.
Admisce 825 corrosioni repugnat in variis ambitibus processuum inclusorum sulphuricis, sulphuricis, phosphoricis, nitricis, hydrofluoricis et acida organica et alcali sicut sodium vel hydroxidum potassae et solutiones chloridi acidici.
Fabricatio Alloy 825 admixtionum nickel-base propria est, variis technicis technicis materialibus facile formabilis et conciliabilis.
Applications
Aeris pollutio Imperium
Scrubbers
Chemical Processing Equipment
Acids
Alkalis
Cibus Processus Equipment
nuclei
Fuel Reprocessing
Fuel elementum Dissolvers
deserta pertractatio
Offshore Oleo et Gas productione
Seawater Calor Exchangers
Limbis Systems
Sour Gas Components
Ore Processing
Cuprum exacutio Equipment
Petroleum Refining
Aeris refrigeratum Caloris Commutatores
Steel Pickling Equipment
Calefaciens Coils
Tanks
Crates
Baskets
dissipa Dispositione
Iniectio Bene Limbis Systems
Signa
ASTM.................B 424
ASME...................SB 424
Chemical Analysis
Typical Pretio (% pondus)
| Nickel | 38.0 min.–46.0 max. | Ferrum | 22.0 min. |
| Chromium | 19.5 min.–23.5 max. | Molybdenum | 2.5 min.–3.5 max. |
| Molybdenum | 8.0 min.-10.0 max. | Copper | 1.5 min.–3.0 max. |
| Titanium | 0.6 min.–1.2 max. | Carbon | 0.05 max. |
| Niobium (plus Tantalum) | 3.15 min.-4.15 max. | Titanium | 0.40 |
| Carbon | 0.10 | Manganese | 1.00 max. |
| Sulphur | 0.03 max. | Pii | 0.5 max. |
| aluminium | 0.2 max. |
|
Corporalia Properties
Density
0.294 lbs/in3
8.14 g/cm3
Imprimis Caloris
0.105 BTU/lb-°F
440 J/kg-°K
Modulus Elasticitatis
28.3 psi x 106 (100°F)
196 MPa (38°C)
Magnetic Permeability
1.005 Oersted (μ at 200H)
Scelerisque conductivity
76.8 BTU/hr/ft2/ft-°F (78°F)
11.3 W/m-°K (26°C)
Exustio Range
2500 - 2550°F
1370 – 1400°C
Resistivity electrica
678 Ohm circ mil/ft (78°F)
1.13 μ cm (26°C)
Linearibus Coefficiens Scelerisque Expansion
7.8 x 10-6 in / in°F (200°F)
4 m / m°C (93°F)
Mechanica Properties
Typical Room Temperature Mechanical Properties, Mill Annealed
| Cedat imperium 0.2% Offset | Ultima Tensile Fortitudo | Prolongatio in 2 in. | duritia | ||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | Rockwell B |
| 49,000 | 338 | 96,000 | 662 | 45 | 135-165 |
Alloy 825 bonas proprietates mechanicas ab cryogenicis usque ad temperaturas mediocriter altas habet.Patefacio temperaturis supra 1000°F (540°C) provenire potest in mutationibus ad microstructuram quae signanter ductilitatis et ictum vires deprimet.Quam ob rem, Alloy 825 adhiberi non debet ad temperaturae ubi proprietates serpere-rupturae sunt factores designantes.Admixtum frigido opere substantialiter roborari potest.Admisce 825 bonam vim habet ad cella temperiei ictum, et robur in temperaturis cryogenicis retinet.
Tabula VI - Charpy Keyhole Impact fortitudo Plate
| Temperature | propensio | Fortitudo impulsum * | ||
| °F | °C |
| ft-lb | J |
| Cubiculum | Cubiculum | Longitudinal | 79.0 | 107 |
| Cubiculum | Cubiculum | Transversus | 83.0 | 113 |
| -110 | -43 | Longitudinal | 78.0 | 106 |
| -110 | -43 | Transversus | 78.5 | 106 |
| -320 | -196 | Longitudinal | 67.0 | 91 |
| -320 | -196 | Transversus | 71.5 | 97 |
| -423 | -253 | Longitudinal | 68.0 | 92 |
| -423 | -253 | Transversus | 68.0 | 92 |
Corrosio Resistentia
Praestantissima Alloy attributum 825 est eius excellentissima corrosio resistentia.In ambitibus oxidentibus et minuendis, stannum corrosioni generali resistit, pitting, rimas corrosioni, corrosioni intergranulares et chloridi accentus corrosioni rimas.
Resistentia ad Laboratorium Sulfuric Acidum Solutions
| Alloy | Corrosio Rate in Fervens Laboratory Sulfuric Acidum Solutio Mils/Anno (mm/a) | ||
| 10% | 40% | L% | |
| 316 | 636 (16.2) | >1000 (>25) | >1000 (>25) |
| 825 | 20 (0.5) | 11 (0.28) | 20 (0.5) |
| 625 | 20 (0.5) | Non Exertus | 17 (0.4) |
Accentus-Corrosion Cracking resistentia
Summum nickel contentum Alloy 825 eximium resistentiam praebet ad chloridi accentus-corrosionis rimas.Nihilominus, in gravissima magnesii chloride ferventis test, stannum post longam expositionem in recipis exempla resiliet.Admisce 825 multo melius in probationibus gravioribus laboratorium facit.Sequens tabula summat offensionis effectum.
Repugnantia Chloride accentus ROSIO Cracking
| Admisce Exertus ut U-flectite Exempla | ||||
| Test SOLUTIO | Admisce 316 | SSC-6MO | Admisce 825 | Admisce 625 |
| 42% Magnesium Chloride (Boiling) | Fail | Mixtum | Mixtum | resiste |
| 33% Lithium Chloride (Boiling) | Fail | resiste | resiste | resiste |
| 26% Sodium Chloride (Boiling) | Fail | resiste | resiste | resiste |
Mixta – Pars exempla probata in 2000 horae experimenti defecit.Hoc signum est altioris gradus resistendi.
Pitting Resistentia
Chromium et molybdenum Alloy 825 contentum altam praebet resistentiae chloridi pituitae.Quam ob rem stannum adhiberi potest in ambitibus chloride magnis ut marinis.Praesertim in applicationibus adhiberi potest ubi aliqua pituita tolerari potest.Praestat ferro incorrupta ut 316L, tamen in applicationibus marinis admixtis 825 non praebet eosdem gradus resistendi ac SSC-6MO (UNS N08367) vel admisce 625 (UNS N06625).
Crevice Corrosio Resistentia
Resistentia ad Chloride Pitting et Crevice Corrosion
| Alloy | Temperature Impetus apud Crevice * °F (°C) |
| 316 | XXVII (-2.5) |
| 825 | 32 (0.0) |
| 6MO | 113 (45.0) |
| 625 | 113 (45.0) |
* ASTM De modo procedendi G-48, 10% Ferric Chloride
Corrosio intergranulare Repugnantia
| Alloy | Fervens 65% Acidum nitricum ASTM De modo procedendi 262 Practice C | Fervens 65% Acidum nitricum ASTM De modo procedendi A 262 Practice B |
| 316 | 34 (.85) | XXXVI (.91) |
| 316L | XVIII (.47) | XXVI (.66) |
| 825 | 12 (.30) | 1 (.03) |
| SSC-6MO | 30 (.76) | 19 (.48) |
| 625 | XXXVII (.94) | Non Exertus |
