ASTM A500 qhia meej Plaub tus thawj qib steel qib rau cov kab lus Hollow: A, B, C, thiab D. cov tshuaj sib txawv, cov khoom siv mechanies, thiab cov ntawv thov. Ntawm no yog cov ncauj lus kom ntxaws tseem qhia tau cov lus piav qhia ntawm txhua qib thiab lawv qhov sib txawv.
Tshuaj Muaj Tshuaj
| Tshuaj lom neeg tshuaj (%) qhov sib txawv ntawm Astm A500 GR.A, GR.B, GR.C, GR.D | ||||
| GRAA | Gr.B | GR.C | Gr.D | |
| Carbon (c) | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 26% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 26% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 23% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 26% |
| Rau cov khoom tshuaj xyuas tsawg dua lossis sib npaug rau 0. 30% | Rau cov khoom tshuaj xyuas tsawg dua lossis sib npaug rau 0. 30% | rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 27% | Rau cov khoom tshuaj xyuas tsawg dua lossis sib npaug rau 0. 30% | |
| Manganese (mn) | Rau kev txheeb xyuas cua sov tsawg dua los yog sib npaug rau 1.35% | Rau kev txheeb xyuas cua sov tsawg dua los yog sib npaug rau 1.35% | Rau kev txheeb xyuas cua sov tsawg dua los yog sib npaug rau 1.35% | Rau kev txheeb xyuas cua sov tsawg dua los yog sib npaug rau 1.35% |
| rau cov khoom tshuaj xyuas tsawg dua lossis sib npaug rau 1.40% | rau cov khoom tshuaj xyuas tsawg dua lossis sib npaug rau 1.40% | rau cov khoom tshuaj xyuas tsawg dua lossis sib npaug rau 1.40% | rau cov khoom tshuaj xyuas tsawg dua lossis sib npaug rau 1.40% | |
| Phosphorus (p) | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% |
| Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | |
| Sulphur (s) | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% | Rau kev txheeb xyuas cua sov tsawg dua lossis sib npaug rau 0. 035% |
| Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | Rau cov khoom tsom xam tsawg dua lossis sib npaug rau 0. 045% | |
| Tooj Liab (Cu) | Rau kev txheeb xyuas cua sov ntau dua lossis sib npaug rau 0. 20% | Rau kev txheeb xyuas cua sov ntau dua lossis sib npaug rau 0. 20% | Rau kev txheeb xyuas cua sov ntau dua lossis sib npaug rau 0. 20% | Rau kev txheeb xyuas cua sov ntau dua lossis sib npaug rau 0. 20% |
| rau cov khoom tsom xam ntau dua lossis sib npaug rau 0. 18% | rau cov khoom tsom xam ntau dua lossis sib npaug rau 0. 18% | rau cov khoom tsom xam ntau dua lossis sib npaug rau 0. 18% | rau cov khoom tsom xam ntau dua lossis sib npaug rau 0. 18% | |
Lub sijhawm tshuaj lom neeg tseem ceeb ntawm ASTM A500 GR.A, GR.C, thiab GR.Kuv nyob rau hauv cov khoom siv carbon monoxide.Lawv cov khoom siv tshuaj lom neeg thiab cov ntawv thov ntawm cov hlau.
- Gr.c muaj covTsawg kawg cov ntsiab lus, uas tuaj yeem pab txhawb rauZoo dua VuamCov khoom vim muaj kev pheej hmoo ntawm kev tawg thaum lub sijhawm vuam.
- Lwm cov ntsiab lus xws li manganese, phosphorus, thiab cov leej faj muaj kev sib xws nyob thoob txhua qib.
- Cov ntsiab lus tooj liab kuj tseem zoo ib yam thaum sau npe ntawm lub tooj liab hlau thoob plaws txhua qib.
Cov Khoom Siv Neeg Kho Tshuab (Hloov Qauv Txheej Txheem)
Lub zog tensile
- Qeb A: 45, 000} psi (310 mpa)
- Qib B: 58, 000} psi (400 mpa)
- Qib C: 62, 000} psi (425 MPA)
- Qib D: 58, 000} psi (400 mpa)
Paib lub zog
- Qeb A: 33, 000} psi (230 MPa)
- Qib B: 42, {1}}} psi (290 MPA)
- Qib C: 46, 000} psi (315 MPA)
- Qib D: 36, 000} psi (250 MPA)
Elongation (2 ")
- Qeb A: 25%
- Qib B: 23%
- Qib C: 21%
- Qib D: 23%
Cov Cuab Yeej Siv Cov Neeg Kho Tshuab (Cov Qauv Duab Ua Si)
Lub zog tensile
- Qeb A: 45, 000} psi (310 mpa)
- Qib B: 58, 000} psi (400 mpa)
- Qib C: 62, 000} psi (425 MPA)
- Qib D: 58, 000} psi (400 mpa)
Paib lub zog
- Qeb A: 39, 000} psi (270 MPA)
- Qib B: 46, {1}}} psi (315 MPA)
- Qib C: 50, 000} psi (345 MPa)
- Qib D: 36, 000} psi (250 MPA)
Elongation (2 ")
- Qeb A: 25%
- Qib B: 23%
- Qib C: 21%
- Qib D: 23%
- Gr.a muajtus qis tshaj plaws tensile thiab tawm los ua zogtiamsisQhov siab tshaj plaws elongation, tawm tswv yim zoo dua ductanity tab sis tsawg dua lub zog piv rau lwm cov qib.
- Gr.b thiab Gr.d muaj cov zog zoo sib xws thiab elongation tab sis txawv rau paib lub zog, nrog gr.b muab lub zog siab dua Gr.D.
- Gr.C muaj cov txiaj ntsig siab tshaj plaws muaj zog tab sis elongation qis tshaj, qhia txog kev lag luam tawm ntawm lub zog thiab kev sib tw.
Hauv cov ntsiab lus, cov khoom siv neeg kho tshuab sib txawv ntawm ASTM A500 GR.A, GR.D, thiab GR.D feem ntau muaj zog thiab elongation. Gr.C muaj cov txiaj ntsig siab tshaj plaws muaj zog tab sis elongation qis tshaj, qhia txog kev lag luam tawm ntawm lub zog thiab kev sib tw. Gr.a muaj cov tensile qis thiab tawm kom muaj zog tab sis elongation ntau tshaj, qhia kom zoo dua qub tab sis tsis tshua muaj zog piv rau lwm cov qib. Gr.b thiab Gr.d muaj cov zog zoo sib xws tab sis sib txawv nrog rau lub zog muaj zog thiab elongation, nrog gr.b muab lub zog siab dua thiab du sij hawm gr.d. Cov kev hloov pauv no hauv cov tshuab cov cuab yeej tso cai rau kev xaiv cov txheej txheem tsim nyog raws li cov kev cai ntawm cov txheej txheem.
Cov Ntawv Thov
ASTM A500 Hollow cov tshooj raug xaiv raws li cov cai tshwj xeeb ntawm cov txheej txheem thov. Qeb A yog siv rau cov hom phiaj dav dav nrog cov khoom siv qis dua, thiab qib d rau cov kev thov muaj zog tshaj plaws thiab kev ntseeg tau. Cov kawm qib ua kom paub tias cov ntu ATTM AT500 tuaj yeem ua tau raws li cov kev siv tshuab thiab kev tsim kho cov txheej txheem yooj yim rau cov haujlwm yooj yim, hnyav-dej num-cov dej num yooj yim.
Qib D Yuav tsum tau kho kom sov ntawm qhov kub ntawm tsawg kawg 1100 degree f (590 degree) rau ntau tshaj ib teev ntawm ib teev ntawm tuab. Cov txheej txheem kev kho cua sov no txhim kho cov hlau cov cuab yeej siv, ua rau nws muaj zog thiab muaj zog dua tom qab raug rau qhov kub thiab hnyav. Cov kev kho cua sov kuj tseem pab tau kom txo cov kev ntxhov siab ntawm kev tsim khoom, uas tuaj yeem txhim kho cov hlau qhov kev ua tau zoo tag nrho thiab kev tiv thaiv kev qaug zog.
Qib A
Qeb A, nrog nws cov txiaj ntsig qis dua thiab lub zog tensile, yog qhov zoo rau cov hom phiaj dav dav uas muaj zog txaus yog qhov txaus. Nws yog nquag siv nyob rau hauv cov qauv tsis yog-tseem ceeb tshaj plaws tab sis yuav tsum muaj lub zog siab tab sis yuav tsum tau tuav kev ncaj ncees cov qauv kev cai, xws li hauv kev tsim cov phiaj xwm thiab teeb tsa lub teeb inrastrastructure.
Qib B
Qib B yog feem ntau siv nyob rau hauv ntau txoj haujlwm ua vaj vim tias nws sib tw muaj peev xwm thiab muaj zog kom zoo. Nrog lub zog yam tsawg kawg ntawm 58, 000 psi, qib no muab cov kev siv txhim khu kev qha rau ntau yam kev tsim kho cov qauv, suav nrog kev tsim cov ntas thiab kev tsim kho choj.
Qib C
Kev muab lub zog ntau dua li qib A thiab B, Qib C yog qhov zoo thaum xav tau kev siv lub peev xwm ntau. Nws yog siv rau hauv cov cuab yeej hnyav xws li cov cuab yeej siv khoom siv, cov tshuab khaws cia, qhov twg nws lub zog kom muaj zog ntawm 50, {} psi tau txais txiaj ntsig
Qeb D
Raws li qib muaj zog tshaj plaws hauv A500 tus qauv. Qib D, Thaum tsis muaj lub zog zoo tshaj plaws, muaj txiaj ntsig los ntawm cov txheej txheem kev kho vaj kub uas yuav tsum tau ua rau cov ntawv thov kev lag luam zoo ib yam li cov khoom siv tseem ceeb hauv kev tsim kho thiab cov khoom siv lag luam.
Hauv kev xaus, kev xaiv ntawm ASTM A500 Hollow Seb cov qib tau ua kom haum rau cov kev thov tshwj xeeb ntawm ntau cov ntawv thov. Tau qhab-nees ib lub hom phiaj dav dav nrog cov khoom siv qis dua, qib C yog tsim nyog, thiab qib D yog haujlwm rau cov txheej txheem xav tau tshaj plaws. Qhov ntau ntawm cov qib kawm ua kom ntseeg tau tias ASTM A500 cov ntu muaj peev xwm ua tau raws li cov txheej txheem kev tsim kho tshiab thiab kev siv cov qauv yooj yim rau cov haujlwm yooj yim, hnyav-ua haujlwm-ua haujlwm.
