astm a500 vs a519 ua
ASTM A500/A500M-23 tus qauv, "Cold- tsim welded thiab seamless carbon steel structural raj ntawm puag ncig thiab cov duab plaub," npog cov kev tsim thiab kev ua tau zoo rau txias- tsim welded thiab seamless carbon steel raj siv hauv tsev, choj, thiab lwm yam kev siv. Cov qauv no siv rau cov raj steel ntawm puag ncig, square, thiab cov duab plaub, qhia txog cov ntsiab lus tseem ceeb xws li tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab qhov ntev ntev. ASTM A500 steel tubes tau muab faib ua plaub qib: A, B, C, thiab D, txhua qhov muaj zog sib txawv thiab cov ntawv thov tsim nyog rau ntau yam kev siv, los ntawm lub teeb mus rau cov qauv hnyav.
Ib qho piv txwv zoo raws li tus qauv ASTM A519 yog chromium-molybdenum alloy steel tshwj xeeb tsim rau kev siv tshuab. Los ntawm optimized alloy proportions thiab kev kho cua sov txheej txheem, nws combines siab zog (lub zog tensile Ntau tshaj los yog sib npaug zos rau 655MPa), corrosion kuj (chromium ntsiab lus 0.80-1.10%), thiab zoo weldability (carbon sib npaug tsawg dua los yog sib npaug rau 0.59), thiab yog dav siv nyob rau hauv teb xws li roj thiab cov khoom siv high-pressure.
Chemical Composition Comparison (%)
| Element | ASTM A500 (piv txwv li, Qib C) | ASTM A519 (piv txwv li, Qib 1010/1020) | Qhov txawv tseem ceeb |
|---|---|---|---|
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug rau 0.23 (Qib C) | 0.08-0.18 (1010) / 0.18-0.23 (1020) | A519 muaj qis lossis tswj cov pa roj carbon rau kev sib npaug zog / ductility; A500 muab qhov tseem ceeb ntawm cov qauv tsim. |
| Manganese (Mn) | 1.15-1.50 (Qib C) | 0.30-0.60 (1010) / 0.70-0.90 (1020) | A519 siv cov qib Mn haum rau cov khoom siv kho tshuab tshwj xeeb; A500 siv Mn siab dua rau kev ua haujlwm ruaj khov. |
| Phosphorus (P) / Sulfur (S) | Tsawg dua lossis sib npaug li 0.035 (txhua tus) | Tsawg dua lossis sib npaug rau 0.040 (txhua) | A500 muaj stricter impurity txwv rau cov qauv kev ntseeg tau; A519 tso cai me ntsis siab dua rau cov nqi ua haujlwm. |
| Alloying Elements | Feem ntau tsis muaj (carbon-manganese steel) | Tej zaum yuav suav nrog cov kab (piv txwv li, Cr, Mo rau cov qib tshwj xeeb) | A519 txhawb nqa alloying rau kev txhim kho cov khoom siv zoo (xws li, hardenability); A500 tseem tsis yog- alloyed. |
Mechanical Properties Sib piv
| Khoom | ASTM A500 (Qib C) | ASTM A519 (piv txwv li, 1010/1020) | Qhov txawv tseem ceeb |
|---|---|---|---|
| Yield zog | Ntau dua lossis sib npaug rau 315 MPa (yam tsawg kawg) | 205-450 MPa (qib-nyob ntawm) | A519 muaj ntau qhov kev tawm dag zog lub zog rau kev xav tau kev kho tshuab; A500 tsom rau qhov siab yam tsawg kawg nkaus. |
| Tensile zog | 380-480 MPa (zoo) | 345-530 MPa (qib-nyob ntawm) | A519 muab kev hloov pauv hauv lub zog tensile rau kev siv dynamic; A500 ua kom muaj kev ruaj ntseg zoo ib yam. |
| Elongation | Ntau dua lossis sib npaug li 18% (50 hli ntsuas qhov ntev) | 15-30% (qib / txheej txheem-nyob ntawm) | A519 tseem ceeb elongation rau formability / cuam tshuam tsis kam; A500 sib npaug ductility nrog cov qauv xav tau. |
Mechanical Performance & Application-Tswj yam ntxwv
| Kev xeem / yam ntxwv | ASTM A500 1 | ASTM A519 Cov Lus Qhia Tshwj Xeeb | Qhov txawv tseem ceeb |
|---|---|---|---|
| Thawj Siv Case | Cov qauv tubing (xws li, lub tsev thav duab, trailers, racks) | Mechanical tubing (piv txwv li, hydraulic kheej kheej, nws pib qhov chaw, tshuab shafts) | A500 rau static load-cov kabmob; A519 rau dynamic / precision mechanical Cheebtsam. |
| Kev tsim khoom | Hluav taws xob tsis kam vuam (ERW) lossis submerged arc vuam (SAW) | Seamless lossis hluav taws xob tsis kam vuam (ERW) | A519 seamless kev xaiv muaj superior qaug zog tiv thaiv; A500 muab qhov tseem ceeb rau tus nqi- vuam zoo. |
| Nto tiav | Standard industrial tiav | Smoother / ntau dua qub (tseem ceeb rau kev txav mus los) | A519 ua kom lub ntsej muag nruj rau zawv zawg / tig daim ntawv thov; A500 tsom rau cov qauv haum-up. |
| Kev kho cua sov | Tsis yog feem ntau siv | Feem ntau teev (piv txwv li, annealing, normalizing) | A519 siv kev kho cua sov kom zoo rau cov khoom siv kho tshuab; A500 tso siab rau hauv chemistry. |
| Impact Toughness | Optional (tsis tas yuav tsum tau) | Qhov tseem ceeb rau kev siv dynamic / qaug zog | A519 yuav tsum muaj kev ntsuam xyuas qhov cuam tshuam rau cov khoom siv rau kev thauj khoom cyclic; A500 tsom rau lub zog zoo li qub. |
Daim ntawv thov tseem ceeb sib piv
| Txuj | Kev siv tsim nyog | Qhov zoo |
|---|---|---|
| ASTM A500 1 | Lub tsev kem, lub teeb ncej, cia racks, trailer ncej | Lub zog siab -rau- qhov hnyav piv, tus nqi- zoo rau kev sib dhos, yooj yim vuam / fabrication. |
| ASTM A519 Cov Lus Qhia Tshwj Xeeb | Hydraulic thooj voos kheej kheej, automotive tsav shafts, tshuab Cheebtsam, siab hlab ntsha | Precision qhov ntev, tailored mechanical zog, superior qaug zog kuj rau dynamic systems. |
A500 thiab A519 Cov Qauv Tube hauv Tshuag
