###1. Puas yog A36 thiab 1018 Steel tib yam?
** Tsis yog, ASTM A36 thiab SAE / AISI 1018 tsis zoo ib yam.
* ** Kev faib tawm thiab Kev Siv: ** A36 yog qib ** steel qauv **, tswj hwm los ntawm ASTM tus qauv, thiab feem ntau yog siv rau kev tsim cov choj, cov tsev, thiab lwm yam khoom siv. Hauv qhov sib piv, 1018 yog qib ** carbon steel **, cais los ntawm SAE lossis AISI cov qauv, thiab feem ntau yog siv rau cov khoom uas xav tau kev sib xyaw ua ke ntawm lub zog thiab kev ua haujlwm zoo, xws li cov ntsia hlau, ncej, thiab cov khoom siv tshuab.
* ** Tshuaj lom neeg muaj pes tsawg leeg:** A36 feem ntau muaj cov ntsiab lus siab tshaj carbon (Less tshaj lossis sib npaug li 0.25%) piv rau 1018 (0.15-0.20%). Qhov sib txawv tseem ceeb yog cov ntsiab lus manganese (Mn); A36 muaj qhov tshwj xeeb ntawm 0.80-1.20% rau daim hlau, thaum 1018 muaj qhov qis me ntsis ntawm 0.60-0.90%.
* ** Mechanical Properties: ** Cov khoom siv kho tshuab ntawm A36, xws li lub zog tawm los (Ntau dua lossis sib npaug ntawm 250 MPa) thiab lub zog tensile (400-550 MPa), tau teev tseg rau cov khoom tsim khoom kawg. Rau 1018, txhua yam khoom muaj nyob ntawm cov txheej txheem tsim khoom thiab kev kho cua sov. Hauv qhov xwm txheej txias, piv txwv li, 1018 tuaj yeem muaj lub zog ua haujlwm siab dua (Ntau dua lossis sib npaug rau 735 MPa tau tshaj tawm) tshaj A36 .
###2. Suav sib npaug ntawm ASTM A36 yog dab tsi?
Qhov feem ntau thiab ze tshaj Suav sib npaug rau ASTM A36 yog ** GB / T Q235B ** .
Ob leeg yog carbon structural steels siv nyob rau hauv kev tsim kho thiab dav siv. Txawm li cas los xij, lawv tsis zoo ib yam:
* ** Lub zog: ** Q235B muaj qhov qis qis qis qis qis zog (Ntau dua lossis sib npaug rau 235 MPa) piv rau A36 (Ntau dua lossis sib npaug rau 250 MPa).
* ** Kev Tswj Tshuaj: ** Suav cov qauv rau Q235 series steels feem ntau muaj cov ncauj lus kom ntxaws ntxiv ntawm cov tshuaj muaj pes tsawg leeg, uas tuaj yeem muaj txiaj ntsig zoo rau weldability.
Rau cov ntawv thov uas xav tau kev tiv thaiv corrosion ntau dua lossis rau cov hlab ntsha siab, ** Q245R ** qee zaum suav tias yog vim nws cov kev tswj hwm nruj dua ntawm impurities.
### 3. Puas yog 1018 Zoo dua A36?
Seb 1018 yog "zoo dua" yog nyob ntawm daim ntawv thov. Ib tug tsis yog universally superior rau lwm tus.
* ** Xaiv A36 rau kev siv cov qauv.** Nws cov khoom yog optimized rau kev tsim kho lub hom phiaj xws li cov tsev thiab txuas hniav, qhov twg weldability thiab tag nrho lub zog yog qhov tseem ceeb.
* ** Xaiv 1018 rau machining thiab qhov chaw tsim khoom.** Nws yog tshwj xeeb tshaj yog rau nws cov machinability zoo, thiab los ntawm cov txheej txheem xws li txias los yog kev kho cua sov, nws muaj peev xwm ua tau ib tug smoother nto tag, muaj zog dua, thiab zoo dua seem raug rau qhov chaw xws li shafts, bolts, thiab pins.
### 4. Dab tsi yog ASTM sib npaug ntawm 1018?
SAE / AISI 1018 nws tus kheej yog cov qauv khoom siv. Txawm li cas los xij, nws tuaj yeem pom nyob rau hauv ntau yam ASTM specifications uas tswj nws daim ntawv thiab siv. Piv txwv li:
* ** ASTM A510 / A510M ** npog hlau rods thiab ntxhib puag ncig hlau ua los ntawm cov hlau, uas suav nrog 1018 .
* ** ASTM A1040 ** muab cov lus qhia rau cov qauv kev sib xyaw ua ke rau wrought carbon steels, npe 1018 .
### 5.Dab tsi yog Qhov Kev Xaiv rau ASTM A36?
Ntau qib steel tuaj yeem ua lwm txoj hauv kev rau A36 nyob ntawm cov kev cai tshwj xeeb thiab cov qauv hauv cheeb tsam.
* ** Hauv Suav teb: ** ** Q235B ** yog thawj qhov kev xaiv ncaj qha rau kev ua haujlwm dav dav.
* **Higher-Strength Alternative (US):** ** ASTM A572 Gr. 50** yog ib qho kev ua haujlwm siab -lub zog, qis- alloy (HSLA) lwm txoj. Nws muaj qhov tsawg kawg nkaus tawm lub zog (Ntau dua lossis sib npaug rau 345 MPa) dua li A36, tso cai rau cov qauv sib dua.
* ** International Equivalents:**
* **JIS SS400** (Nyiv) zoo sib xws hauv cov tshuab ua haujlwm rau A36 .
* ** EN S275JR ** (Tebchaws Europe) yog cov qauv steel qib uas tuaj yeem siv los hloov.
