A500 yog ib hom carbon structural steel nyob rau hauv American ASTM tus qauv, feem ntau yog siv rau kev tsim txias - tsim welded structural Cheebtsam. Nws yog tus cwj pwm los ntawm lub zog nruab nrab, zoo weldability, nrog rau kuj zoo plasticity thiab toughness. Nyob ntawm cov qib sib txawv (xws li Gr.A, Gr.B, Gr.C, thiab lwm yam), nws lub zog tawm los thiab lub zog tensile yuav txawv.
Dab tsi yog qhov sib npaug ntawm ASTM A500 qib?
ASTM A500 Qib A: Nws feem ntau sib haum rau Suav qib Q235B lossis Q235C thiab tsim nyog rau kev siv cov qauv siv dav dav.
ASTM A500 Qib B: Nws feem ntau sib raug rau Suav qib Q345B. Nrog rau siab yield zog, nws yog dav siv nyob rau hauv load- bearing lug.
ASTM A500 Qib C: Nws feem ntau sib raug rau cov qib Suav Q235 lossis Q345B, nyob ntawm seb cov khoom siv cuab yeej xav tau, thiab feem ntau pom nyob rau hauv siab - kev siv zog.
ASTM A500 Qib D: Nws feem ntau sib raug rau cov qib Suav Q345B lossis Q345C thiab muaj feem xyuam rau cov xwm txheej uas yuav tsum muaj siab rau qis - kub toughness.
Puas yog A500 tib yam li A36?
A36 thiab A500 steel muaj cov khoom sib txawv
| Yam khoom | Qhov taw qhia tshwj xeeb | ASTM A500 1 | ASTM A36 |
|---|---|---|---|
| Chemical Properties | Cov pa roj carbon ntau (C) Cov ntsiab lus | Feem ntau qis dua 0.26% (tej zaum yuav txawv raws qib tshwj xeeb) | 0.26% |
| Manganese (Mn) Cov ntsiab lus ntau yam | Feem ntau 0.90% - 1.90% (yuav txawv raws qib tshwj xeeb, piv txwv li, Qib A, B, C) | 1.03% (qhov siab tshaj plaws, tab sis feem ntau nyob rau hauv thaj tsam ntawm 0.20% - 0.50% lossis 0.80 - 1.20%, nyob ntawm tus qauv version thiab cov kev xav tau ntxiv) | |
| Qhov siab tshaj plaws Phosphorus (P) Cov ntsiab lus | 0.035% (tej zaum yuav txawv raws qib tshwj xeeb) | 0.04% | |
| Qhov siab tshaj plaws Sulfur (S) Cov ntsiab lus | 0.035% (tej zaum yuav txawv raws qib tshwj xeeb) | 0.05% | |
| Mechanical Properties | Yield zog (MPa) | Qib A: Ntau dua lossis sib npaug ntawm 228 MPa Qib B: Ntau dua lossis sib npaug ntawm 290 MPa Qib C: Ntau dua lossis sib npaug rau 317 MPa (txias- tsim) lossis 345 MPa (kub- tsim) |
Ntau dua lossis sib npaug li 250 MPa |
| Tensile zog (MPa) | Qib A: 310 MPa Qib B: Yam tsawg kawg nkaus 400 MPa rau siab tshaj 580 MPa (tab sis muaj txiaj ntsig ntau dua) Qib C: Yam tsawg kawg nkaus 450 MPa rau siab tshaj 620 MPa (tab sis muaj txiaj ntsig ntau dua) |
400 - 550 MPa | |
| Elongation (%) | Feem ntau siab, nyob ntawm cov yeeb nkab loj thiab qib, piv txwv li, Qib B thiab C nrog lub ntsuas qhov ntev ntawm 50mm, elongation Ntau dua lossis sib npaug li 23% (tus nqi tshwj xeeb txawv ntawm qib thiab loj) | Ntau dua lossis sib npaug li 20% (rau qhov ntsuas qhov ntev ntawm 200mm, rau daim hlau nrog lub thickness Tsawg dua lossis sib npaug li 200mm) | |
| Impact Toughness | Feem ntau ua tau raws li qhov yuav tsum tau ua ntawm qhov ntsuas kub tshwj xeeb, piv txwv li, Qib B thiab C tej zaum yuav xav tau kom ua tau raws li cov qauv toughness ntawm -29 degree | Kev cuam tshuam zoo ntawm qhov kub thiab txias, tab sis cov txiaj ntsig tshwj xeeb yuav txawv nyob ntawm cov khoom tuab thiab cov khoom siv ntsuas, tsis muaj qhov tshwj xeeb qis - qhov yuav tsum tau muaj qhov kub thiab txias |
Kev xav tau tshuaj lom neeg ntawm A500
|
Lub ntsiab |
Qib A, B thiab D |
Grace C |
||
|
Kub |
Khoom |
Kub |
Khoom |
|
|
Kev tsom xam |
Kev tsom xam |
Kev tsom xam |
Kev tsom xam |
|
|
Cov pa roj carbon, max |
0.26 |
0.3 |
0.23 |
0.27 |
|
Manganese, max |
... |
... |
1.35 |
1.4 |
|
Phosphorus, max |
0.035 |
0.045 |
0.035 |
0.045 |
|
Sulfur, max |
0.035 |
0.045 |
0.035 |
0.045 |
|
Tooj, thaum tooj liab hlau |
0.2 |
0.18 |
0.2 |
0.18 |
|
yog teev, min |
||||
Square & Rectangle Tubing Mechanical Properties
|
Qib |
Tawm tswv yim (min) |
Tensile (min) |
Elongation (min) |
|
Qib A |
39,000 psi |
45,000 psi |
Txiav txim los ntawm phab ntsa |
|
Qib B |
46,000 psi |
58,000 psi |
Txiav txim los ntawm phab ntsa |
|
Qib C |
50,000 psi |
62,000 psi |
Txiav txim los ntawm phab ntsa |
Round Tubing Mechanical Properties
|
Qib |
Tawm tswv yim (min) |
Tensile (min) |
Elongation (min) |
|
Qib A |
33,000 psi |
45,000 psi |
Txiav txim los ntawm phab ntsa |
|
Qib B |
42,000 psi |
58,000 psi |
Txiav txim los ntawm phab ntsa |
|
Qib C |
46,000 psi |
62,000 psi |
Txiav txim los ntawm phab ntsa |
A500 Cov Khoom Siv Hluav Taws Xob:
- Lub tsev tsim
Hauv cov tsev siab - nce siab lossis loj - cov qauv tsim, cov phab ntsa tuab thiab lub zog ntawm cov kav dej square yuav tsum raug kho raws li kev xam cov load. Piv txwv li, qee qhov truss pob qij txha yuav tsum tau nce phab ntsa tuab lossis siv cov khoom siv qib siab dua -Gr.C.
- Cov cuab yeej siv tshuab
Nyob rau hauv conveyor thav duab los yog cov khoom siv tsis siv neeg, qhov tseeb qhov tseeb thiab qhov ncaj ntawm cov kav dej square yog qhov tseem ceeb. Kev sib txawv ntau dhau yuav ua rau muaj teeb meem sib dhos lossis ua haujlwm tsis ruaj khov.
- Kev Siv Zog
Square kav siv rau lub hnub ci vaj huam sib luag mounts lossis cua turbine yees feem ntau xav tau huab cua ntau dua thiab ua rau qaug zog. Yog li ntawd, lawv yuav raug tsim los siv cov khoom siv tshwj xeeb alloy lossis cov txheej txheem kho cua sov.
A500 txias dov steel Tube Hoobkas
