ASTM A387 Qib 5 Chav Kawm 1yog chromium-molybdenum alloy steel phaj uas tau teev tseg hauv ASTM A387/A387M tus qauv, tsim feem ntau rau cov welded fabrication ntawm cov hlab ntsha siab thiab lwm yam khoom siv ua haujlwm nyob rau hauv siab - kub. Nws nta ib qho ua tib zoo ntsuas cov tshuaj muaj pes tsawg leeg nyob rau hauv chromium thiab molybdenum ntxiv, uas ua rau nws muaj kev ua tau zoo heev - kub lub zog, creep tsis kam thiab corrosion kuj rau hnyav muaj kev pab cuam. Muab nyob rau hauv cov kev kho cua sov zoo li qub, nws sib npaug txhim khu kev qha kev ua tau zoo nrog cov weldability zoo, ua rau nws tsim nyog rau ntawm - qhov chaw tsim khoom loj - nplai. Cov qib steel no yog siv dav hauv kev lag luam roj thiab roj, petrochemical thiab hluav taws xob tsim kev lag luam, feem ntau yog siv los tsim cov hlab ntsha siab, cov khoom siv hluav taws xob, cov khoom siv boiler thiab cov kav dej uas ua haujlwm siab - cov kua dej kub thiab tiv taus cov kua qaub los yog alkaline corrosive media, tswj kev ruaj ntseg zoo txawm tias lub sij hawm ntev thermal cycling.
Tshuaj muaj pes tsawg leeg
| Qib | C | Mn | P | S | Si | Cr | Mo |
| ASTM A387 Gr 1. | 0.15 max | 0.25 – 0.66 | 0.035 | 0.030 | 0.55 max | 3.9 – 6.1 | 0.40 – 0.7 |
Mechanical Properties
|
Qib |
Tensile zog (MPa) |
Yield zog (MPa) min |
% Elongation hauv 2 nti (50mm) min |
Impacting Test Temperature (degree) |
|
A387 Qib 5 |
415-585 |
205 |
18 |
-20,40,-60 |
Cov yam ntxwv tseem ceeb & kev siv
High -Tsev Kev Pabcuam
Engineered rau kev ua haujlwm ruaj khov ntawm qhov kub siab, nrog khaws cov neeg kho tshuab lub zog thiab thermal stability. Qhov tseem ceeb rau cov khoom siv tseem ceeb hauv cov chaw tsim hluav taws xob, cov chaw tsim khoom, thiab cov chaw ua tshuaj lom neeg.
Corrosion Resistance
Chromium cov ntsiab lus tsim cov yeeb yaj kiab tiv thaiv kev tiv thaiv, xa cov kev tiv thaiv zoo rau atmospheric, acidic, alkaline, thiab oxidizing corrosive ib puag ncig (raws li Alpha Overseas thiab Gnee Steels technical data). Extens kev pab cuam lub neej ntawm cov khoom siv thiab txiav cov nqi tu.
Welded Cheebtsam Compatibility
Weldability zoo heev nrog tsawg tawg rhiab heev; weld pob qij txha phim lub hauv paus hlau khoom tom qab kev kho cua sov. Zoo tagnrho rau fabricating loj welded lug xws li muaj boilers thiab siab hlab ntsha, raws li nruj kev lag luam cov qauv kev ruaj ntseg.
Tiv tauj peb ntawm beam@gneesteelgroup.com. rau pricing, technical support, los yog customized daws. Peb yeej ib txwm npaj los txhawb koj qhov project.
ASTM A387 sib npaug li cas?
Ntawm cov ASTM A387 Qib 22 sib npaug steel qib, SA387 Qib 22, 10CrMo9-10 yog nrov dua li lwm yam sib npaug. SA387 Qib 22 steel yog raws li ASME SA387 / SA387M tus qauv. Kev ua haujlwm tshuaj lom neeg thiab kev ua haujlwm ntawm SA387 Qib 22 steel yuav luag zoo ib yam nrog ASTM A387 Qib 22 steel.
Dab tsi yog qhov txawv ntawm ASTM A387 GRADE 5 CLASS 1 thiab Class 2?
Qhov sib txawv tseem ceeb ntawm ASTM A387 Qib 5 Chav Kawm 1 thiab Chav Kawm 2 yog nyob rau hauv lawv cov khoom siv kho tshuab, tshwj xeeb lub zog tensile thiab lub zog tawm los, nrog Chav Kawm 2 muab lub zog ntau dua tab sis muaj peev xwm qis dua (elongation) piv rau Chav Kawm 1, txawm hais tias ob leeg sib koom tib yam tshuaj muaj pes tsawg leeg thiab siv rau siab - kub siab cov hlab ntsha. Chav Kawm 2 muab kev ntxhov siab ntau dua, thaum Chav Kawm 1 yog me ntsis ductile, tab sis rau Qib 5, elongation qhov tseem ceeb yuav zoo sib xws.