Stainless hlau qib 253MA
Aug 12, 2021
Stainless hlauQib 253 MA
Ib: Taw qhia
253MA yog qib sib txuas cov khoom siv zoo heev ntawm qhov kub thiab txias nrog kev yooj yim ntawm fabrication. Nws tiv taus oxidation ntawm qhov kub txog li 1150 ° C thiab tuaj yeem muab kev pabcuam zoo tshaj rau Qib 310 hauv carbon, nitrogen thiab sulfur uas muaj cua.Lwm qhov kev tsim tshwj xeeb uas suav nrog qib no yog 2111HTR.
253MA muaj cov ntsiab lus tsis tshua muaj npib tsib xee, uas ua rau nws muaj txiaj ntsig zoo hauv kev txo cov sulphide cua thaum piv rau cov nickel alloys siab thiab qib 310. Kev suav nrog siab silicon, nitrogen thiab cerium cov ntsiab lus muab cov hlau zoo oxide stability, siab kub siab zog thiab zoo heev. tsis kam mus rau sigma theem nag lossis daus.Cov qauv austenitic muab cov qib no zoo heev toughness, txawm mus rau cryogenic kub.
Yam khoom siv 253 MA siv li cas?
*Burners, Boiler Nozzles
*Petrochemical thiab refinery raj hangers
*Kub exchangers
*Expansion hauv qab no
*Cov dampers
*Daim ntawv thov
Piv txwv li: Cov ntawv thov muaj xws li:
Cov khoom siv hluav taws xob suav nrog cov hluav taws kub hnyiab, retorts, conveyor siv, kiv cua, jigs thiab pob tawb, rollers, taug kev kab teeb, radiant tubes, hluav taws xob rhaub cov ntsiab lus, refractory anchors, hoods, flues, grates, expansion bellows.
Petrochemical thiab refinery raj hangers.
四: Mechanical Properties
Chav ntsuas kub
Kev txwv yam tsawg kawg nkaus
Hom kab mob
Qhov kawg Tensile Strength, psi
87,000
90,000-114,000
2% Offset Yield Strength, psi
45,000
45,000-69,000
Elongation hauv 2", %
40
42-70
Kev txo qis ntawm cheeb tsam,%
50
-
Hardness Rockwell B
-
rb90 ua
Lub cev muaj zog
Cov khoom siv lub cev zoo rau qib 253MA stainless hlau tau muab rau hauv rooj 3.
Lub cev muaj zog ntawm 253MA qib stainless hlau
Qhov ceev (kg / m3)
Elastic Modulus (GPa)
Qhov nruab nrab Coefficient ntawm Thermal Expansion (mm / m / ° C)
Thermal conductivity (W / mK)
Tshwj xeeb Kub
0-100°C (J/kg.K)
Hluav taws xob tiv thaiv (nW.m)
0-100°C
0-600°C
0-1000°C
ntawm 20 ° C
ntawm 1000 ° C
7800
200
17.0
18.5
19.5
15.0
29.0
500
850
五: Qib Specification Sib piv
Kwv yees qib sib piv rau 253MA stainless hlau tau muab rau hauv rooj 4.
Qib specifications rau 253MA qib stainless hlau
| UNS No | Laus British | Euronorm | Swedish SS | Nyiv JIS | ||
| BS | En | Tsis muaj | Lub npe | |||
| S30815 | - | - | 1.4835 | X9CrNiSiNCe21-11-2 | 2368 | |
| Phaj | Bar | cev Smls | Cov yeeb nkab Welded |
| A240, A480, A167 | A276, A479 | A213, A312 | A312, A358, A409, A813, A814 |
Khoom siv: ASTM Specifications
Thaum tshav kub kub Resistance
Oxidation- zoo heev tiv taus huab cua, ntawm qhov kub txog li 1150 ° C. Nyob rau hauv qhov kub kub, cov hlau sai sai ua ib tug nyias, heev adherent thiab elastic oxide. Qhov no oxide muab kev tiv thaiv zoo txawm tias nyob rau hauv cov xwm txheej cyclic.
Carburization- Nyob rau hauv cov xwm txheej oxidising qib no tuaj yeem ua tau zoo, tab sis cov alloys nrog cov ntsiab lus ntau dua nickel yog qhov zoo dua yog tias cov cua txo qis.
Sulfidation- Kev tiv thaiv zoo rau sulfur-cov kabmob gases hauv qhov chaw oxidising, txawm tias tsuas muaj cov pa oxygen xwb. Txo cov roj cua tiv thaiv kev tiv thaiv oxide tsim.
253MA muaj lub zog siab ntawm qhov kub siab, yog li feem ntau yog siv rau cov qauv thiab cov ntawv thov siab ntawm qhov kub siab tshaj li 500 ° C thiab txog li 900 ° C. Nws lub zog ntawm qhov kub thiab txias yog siab dua li ntawm lwm yam xws li Qib 310.
253MA yuav dhau los ua qhov kub thiab txias ntawm 425-860 ° C; Qhov no tsis yog teeb meem rau kev siv kub, tab sis yuav ua rau txo qis aqueous corrosion kuj.
Kev kho cua sov
Kev Kho Hniav (Annealing) - Kub rau 1050-1150 ° C thiab txias sai. Nws raug nquahu tias cov khoom siv yuav raug kho tom qab 10-20% ua haujlwm txias kom ua tiav qhov siab tshaj plaws creep zog hauv kev pabcuam.
Qib no tsis tuaj yeem hardened los ntawm kev kho cua sov.
