SS400 thiab A36 ntawm ib saib
SS400 yog ib qho dav dav - lub hom phiaj cov qauv dov hlau tau teev tseg hauv Nyij Pooj Tsim Qauv JIS G3101, thiab A36 yog cov khoom siv carbon steel uas tau them los ntawm Asmeskas tus qauv ASTM A36 / A36M. Ob qib yog cov siv dav tshaj plaws uas tsis tshua muaj nqi -cov qauv steels nyob hauv lub ntiaj teb, thiab ob qho tib si yog cov khoom siv tsis tu ncua xws li puag ncig, square thiab square hollow seem rau lub tsev thav duab, kev txhawb nqa tshuab, racks, platforms thiab cov khoom siv dav dav.
Lub npe SS400 sawv cev rau 'Steel for General Structure' nrog lub zog tensile yam tsawg kawg nkaus ntawm 400 MPa. Lub npe A36 hais txog qhov tsawg kawg nkaus tawm lub zog ntawm 36 ksi, uas sib npaug li 250 MPa. Txawm hais tias ob qib feem ntau raug kho raws li kev sib hloov hauv cov qauv yooj yim, lawv tau tswj hwm los ntawm cov txheej txheem sib txawv thiab sib txawv ntawm cov kev txwv tsis pub muaj, lav cov khoom muaj txiaj ntsig thiab cov cai tshuaj xyuas, yog li kev hloov pauv yuav tsum tau kuaj xyuas raws li kev cai tsim qauv.
Kev sib piv tshuaj lom neeg
Ob qho khoom siv yog tsawg- carbon structural steels. SS400 tawm hauv qhov muaj pes tsawg leeg qhib thiab feem ntau lav cov khoom siv kho tshuab, thaum A36 qhia txog kev txwv nruj rau ntau lub ntsiab lus. Cov lus hauv qab no teev qhov siab tshaj plaws lossis ntau qhov txiaj ntsig tau muab rau hauv txhua tus qauv.
| Element | SS400 (JIS G3101) | A36 (ASTM A36) |
|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.29% | Tsawg dua lossis sib npaug li 0.25% |
| Manganese (Mn) | Tsawg dua lossis sib npaug li 1.40% | 0.80–1.20% |
| Silicon (Si) | Tsawg dua lossis sib npaug li 0.35% | Tsawg dua lossis sib npaug li 0.40% |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.050% | Tsawg dua lossis sib npaug li 0.04% |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.050% | Tsawg dua lossis sib npaug li 0.05% |
| Copper (Cu) | Tsis tau teev tseg | Ntau dua lossis sib npaug li 0.20% thaum teev tias yog tooj liab -cov kabmob steel |
Cov txiaj ntsig zoo yog qhov me me: ob qib weld nkag tau yooj yim nrog cov pa qis - cov txheej txheem hydrogen, thiab ob qho tib si tsim nyog rau kev pabcuam pleev xim lossis galvanized. Cov pa roj carbon ntau dua me ntsis ntawm SS400 txhais tau hais tias rau cov ntu tuab heev lossis hnyav welds, preheat yuav tsum tau soj ntsuam kom zoo dua.
Mechanical Properties Sib piv
| Khoom | SS400 (JIS G3101) | A36 (ASTM A36) |
|---|---|---|
| Tensile zog | 400-510 MPa | 400-550 MPa |
| Yield zog | Ntau dua lossis sib npaug ntawm 245 MPa rau thickness Tsawg dua lossis sib npaug li 16 hli; 235 MPa rau 16-40 mm; 215 MPa siab tshaj 40 mm | Ntau dua lossis sib npaug li 250 MPa (36 ksi) rau tuab txog 200 hli |
| Elongation Tom qab Fracture | Thickness- thiab cov qauv- nyob ntawm; Feem ntau Ntau dua lossis sib npaug li 21% rau cov ntu nyias | Ntau dua lossis sib npaug li 20% rau 8 hauv. gauge ntev |
| Impact Toughness | Tsis lees paub los ntawm JIS G3101; txheeb xyuas ib qho kev txiav txim thaum xav tau | Tsis tau txib; kuaj thaum tau teev tseg |
| Hardness | Tsis tau teev tseg | Feem ntau 137-155 HB thaum ntsuas |
Cov ntsiab lus tseem ceeb yog tias SS400 qhov txiaj ntsig qhov txiaj ntsig poob qis raws li ntu tuab nce, thaum A36 tuav 250 MPa txog 200 mm thickness. Rau cov khoom hnyav-cov tswvcuab cov kabmob, cov tuab- nyob ntawm qhov tseem ceeb ntawm SS400 yuav tsum tau siv ntau dua li 245 MPa daim duab hais rau cov ntu nyias.
Daim ntawv thov Scenario
A36 structural yeeb nkab yog ib tug qauv kev xaiv nyob rau hauv kev tsim kho thiab infrastructure: lub tsev kab thiab trusses, choj cov tswv cuab, machinery thav duab, shipbuilding, ua liaj ua teb machinery, mining khoom thiab automotive structural qhov chaw. Nws kev sib xyaw ua ke ntawm lub zog, weldability thiab kwv yees elongation ua rau nws yog qib qub hauv ntau cov haujlwm hauv Asmeskas thiab thoob ntiaj teb.
SS400 structural tubes pab tib yam kev siv ntau yam hauv cov haujlwm tsim los rau Japanese lossis Asian cov qauv: kev tsim kho, kev tsim khoom, cov khoom siv tsheb thiab kev tsim nkoj. SS400 phaj thiab cov yeeb nkab kuj tseem siv rau hauv kev lag luam petrochemical rau cov hlab ntsha siab, cov tso tsheb hlau luam thiab cov txheej txheem piping ntawm ambient thiab nruab nrab qhov kub thiab txias, qhov tsim yog raws li qhov guaranteed tensile ntau yam es tsis yield -tswj tsim.
Yuav Ua Li Cas Xaiv Ntawm SS400 thiab A36
Thaum ib qhov project yog engineered rau ASTM los yog thoob ntiaj teb lub tsev lis dej num, A36 cov ntaub ntawv feem ntau yuav tsum tau; Thaum lub hauv paus tsim yog JIS, SS400 yog qib ntuj. Rau cov qauv welded, ob qho tib si ua haujlwm zoo ib yam. Yog tias tus qauv tsim tawm los- tseem ceeb, nco ntsoov tias SS400 lav 245 MPa tsuas yog mus txog 16 hli tuab. Rau kev sib sau txias, ob qib khoov thiab yob zoo, tab sis nruj dua A36 muaj pes tsawg leeg tswj muab kev coj tus cwj pwm zoo me ntsis hauv kev ua haujlwm txias. Tus nqi thiab muaj nyob rau hauv lub khw hauv zos feem ntau txiav txim siab qhov teeb meem thaum ob qho tib si tau txais.
Kev Ntseeg Tsis Zoo
SS400 thiab A36 tsis yog tib yam hlau. Lawv cov tshuaj txwv tsis pub, lav qhov txiaj ntsig ntawm qhov txiaj ntsig thiab cov lus tshuaj ntsuam xyuas txawv, thiab daim ntawv pov thawj tsis tuaj yeem hloov pauv dawb. SS400 tsis yog 'kev cuam tshuam- kuaj' qib los ntawm lub neej ntawd, thiab A36 qhov kev ntsuam xyuas cuam tshuam kuj yuav tsum muaj kev txiav txim ntxiv. Thaum kawg, 400 hauv SS400 yog daim duab tensile, tsis yog daim duab tawm los, yog li nws yuav tsum tsis txhob muab piv ncaj qha nrog 36 ksi yield designation ntawm A36.
FAQ
Q1: Cov raj SS400 puas tuaj yeem siv rau qhov chaw ntawm A36 raj?
Hauv ntau yam tsis yog- cov qauv tseem ceeb yog, tab sis kev hloov pauv yuav tsum tau pom zoo los ntawm tus kws tsim qauv tsim. Cov qauv sib txawv ntawm qhov kev lees paub qhov txiaj ntsig rau cov ntu tuab, muaj pes tsawg leeg txwv thiab kev xeem yuav tsum tau ua, yog li cov cai tswj hwm thiab cov phiaj xwm tshwj xeeb yuav tsum tau kuaj ua ntej.
Q2: Qib twg muaj qhov zoo dua weldability?
Ob leeg zoo heev. Nrog cov pa roj carbon ntawm lossis qis dua 0.29%, ob qib vuam yam tsis muaj kev ceev faj tshwj xeeb hauv cov tuab tuab. Rau cov pob qij txha tuab lossis nruj heev, cov qauv ua ntej ua ntej siv, thiab A36 muab cov npoo me ntsis ntxiv vim nws cov pa roj carbon qis dua.
Q3: Puas yog SS400 muab kev lav phib xaub rau qhov hnyav?
JIS G3101 tsis yuam Charpy cuam tshuam kev kuaj rau SS400. Thaum qis - qhov kev pab cuam qhov kub thiab txias, qhov cuam tshuam lub zog xws li 27 J ntawm 0℃tuaj yeem raug teev raws li qhov yuav tsum tau ua ntxiv ntawm qhov kev txiav txim, lossis yuav tsum xaiv qib sib txawv.
Q4: Tus lej 400 thiab 36 txhais li cas?
400 hauv SS400 yog qhov tsawg kawg nkaus tensile lub zog hauv MPa. Lub 36 hauv A36 yog qhov tsawg kawg nkaus tawm lub zog hauv ksi, sib npaug li 250 MPa. Kev sib piv ntawm ob tus lej ncaj qha yog li ua rau yuam kev.
Q5: Tus qauv twg suav nrog kev tshuaj xyuas thiab kev zam rau cov raj no?
SS400 raj raug tshuaj xyuas rau JIS G3101 ua ke nrog cov qauv siv JIS cov qauv xws li JIS G3445 lossis G3466 nyob ntawm daim ntawv khoom. A36 raj feem ntau muab rau ASTM A36 ua ke nrog ASTM A500, A501 lossis A106 nyob ntawm seb cov khoom puas yog welded, seamless lossis structural hollow seem.
Q6: Puas yog SS400 thiab A36 haum rau qis-kev pabcuam kub?
Ob leeg yog npaj rau ambient -kub cov qauv. Thaum qhov kub thiab txias lawv qhov tawv tsis tau lees paub, thiab cuam tshuam - cov qib tsim nyog xws li A333 lossis qis- alloy steels yuav tsum tau siv rau cryogenic lossis sub-zero tsim tej yam kev mob.