X20Cr13, 1.4021, AISI 420 - Mechanical Properties
X20Cr13, 1.4021, AISI 420 - Specifications thiab Applications
Martensitic stainless hlau, tsim los hloov thermally, nthuav tawm cov khoom siv kho tshuab siab - lub zog, ductility thiab machinability, thaum tswj kom muaj kev tiv thaiv corrosion txaus. 2H13 tsis resistant rau chlorine, ntsev thiab intergranular corrosion. X20Cr13 yog qib tsim nyog rau siv nyob rau hauv qhov chaw ib puag ncig uas tsis tshua muaj cov ntxhia acids, thinners, dej huv thiab chav rau ntawm qhov chaw npaj kom zoo.
X20Cr13 thiab 2H13 steels kuj tuaj yeem raug cais raws li cov cua sov tiv taus txog 825 degrees. Resistant rau gases thiab kub vapors uas muaj sulfur compounds. Kev ruaj khov thiab tsim nyog cov cuab yeej ua haujlwm siab tuaj yeem khaws cia hauv qhov ntsuas kub ntawm 475 txog 500 degree. Saum toj no qhov kub thiab txias, qhov creep txwv yog negligible thiab tsuas yog lub sij hawm kuj yog kuj siab.
Qib no yog siv nyob rau hauv kev tsim cov kub kub bolts, turbine hniav, cutters, trim, phais, bushings, valve rooj, scrapers, hniav, ramparts, check li qub, springs, tshuab qhov chaw, tuag casting pwm thiab pins. Raug rau lub teeb loads nyob rau hauv lub tsheb, petrochemical, industrial hydraulics thiab lub zog industries.
1.4021 (X20Cr13) AISI 420-Mechanical Properties
Yam ntxwv
Annealed Softening Delivery Conditions + A
Tensile zog ntawm peeled bar, R m:<760 MPa
Hardness ntawm stripped strip, HB:<230
Tensile zog ntawm peeled bar, R m:<910 MPa
Tie qws hardness, HB:<290
Kev kho cua sov + QT700
Peeling pas nrig feature
Tensile zog, R m: 700 - 850 MPa
Tawm taw tes R p0.2,> 500 MPa
Elongation, A: >13%
Kev cuam tshuam tsis kam, KV:> 25J
Properties ntawm txoj hlua khi
Tensile zog, R m: 700 - 1000 MPa
Tawm taw tes R p0.2,> 500 MPa
Elongation, A: >8%
Kev cuam tshuam tsis kam, KV:> 25J
Kev kho cua sov + QT800
Tensile zog, R m: 800 - 950 MPa
Tawm taw tes R p0.2,> 600 MPa
Elongation, A: >12%
Kev cuam tshuam tsis kam, KV:> 20J
Thaum tshav kub kub, cp=460 J * kg -1 * K -1
Modulus ntawm elasticity, E=215 GPa
Thermal conductivity λ=30 W * m -1 * K -1
Resistivity Ω: 0.60 mkOhm * m
Linear expansion coefficient, : 10.5 * 10 -6 K -1
Mechanical zog ntawm nplooj ntawv
Annealed Delivery Conditions + A
Tensile zog R m:<700 MPa
Elongation, A: >15%
Hardness, HB/HV:<225
Hardness, HRB:<95
Kev kho cua sov + QT650
Tensile zog, R m: 650 - 850 MPa
Tawm taw tes R p0.2: > 450 MPa
Elongation, A: >12%
Kev kho cua sov + QT750
Tensile zog R m: 750-950 MPa
Tawm taw tes R p0.2,> 550 MPa
Elongation, A: >10%
Hardness tom qab HRC txhim kho: 44-50
Hardness nyob rau hauv siab siab tej yam kev mob: 440-530
Mechanical zog ntawm txias dov strip
Cov khoom xa tuaj + A-Tensile zog, R m: 500-700 MPa
Cov khoom xa tuaj + C700 - Tensile zog, R m: 700-850 MPa
Cov khoom xa tuaj + C800 - Tensile zog, R m: 850-1000 MPa
1. Kev kho cua sov thiab kev kho yas ntawm 4021 (X20Cr13)
Annealing ntawm 745-825 degree nrog cua txias
Cov khoom xa tuaj + QT650 - hardened ntawm 950-1010 degree, txias hauv roj lossis cua, tempered ntawm 700-780 degree
Cov khoom xa tuaj + QT700 - hardened ntawm 950-1050 degree, txias hauv roj lossis cua, tempered ntawm 650-750 degree
Cov khoom xa tuaj + QT750 - Hardened ntawm 950-1010 degree, txias hauv roj lossis cua, tempered ntawm 620-700 degree
Cov khoom xa tuaj + QT800 - Hardened ntawm 950-1050 degree, txias hauv roj lossis cua, tempered ntawm 600-700 degree
Rolled thiab forged ntawm qhov kub thiab txias ntawm 1100-800 degree
