S275 JRyog ib tug nrov European (EN 10025) carbon structural steel qib paub rau nws zoo formability, weldability, thiab nruab nrab lub zog, featuring ib tug tsawg kawg nkaus tawm los zog ntawm 275 MPa rau nyias seem, qhia los ntawm lub 'JR' lub ntsiab lus nws muaj feem xyuam rau ntawm 20 degree. Nws tau dav siv hauv kev tsim kho (kab teeb, thav duab, txuas hniav), nkoj tsim, thiab rau cov khoom tsis yog- cov tshuab tseem ceeb xws li bushings, muab tus nqi- siv tau zoo rau kev xav tau ntawm engineering.
Qhov txawv ntawm A36 (ASTM) thiab S275JR (EN)
Thaum A36 (USA / ASTM) thiab S275JR (Tebchaws Europe / EN) feem ntau suav hais tias ua haujlwm sib npaug rau kev siv cov qauv siv dav dav, lawv muaj cov kev sib txawv tseem ceeb hauv lawv cov qauv, kev lav phib xaub, thiab muaj pes tsawg leeg.
Nov yog qhov sib piv ncaj qha rau hauv lub rooj hom:
| Yam | ASTM A36 | S275JR (EN 10025-2) | Kev Siv Tau |
|---|---|---|---|
| 1. Kev Tswj Tus Txheej Txheem | ASTM A36 / A36M (Asmeskas) | TS EN 10025-2 (Tebchaws Europe) | Daim ntawv pov thawj sib txawv & cov ntawv xeem. |
| 2. Cov khoom tseem ceeb muaj zog | Yam tsawg kawg Tensile Strength: 400-550 MPa (58-80 ksi). Yield Strength yog ntau dua los yog sib npaug rau 250 MPa (36 ksi) rau cov duab / phaj Tsawg dua los yog sib npaug rau 200mm tuab. |
Yam tsawg kawg Yield Strength (ReH): 275 MPa rau thickness Tsawg dua los yog sib npaug rau 16 hli. Rau cov seem tuab, nws txo qis (piv txwv li, 265 MPa rau 40mm). Tensile: 410-560 MPa. | A36 yog txhais los ntawm lub zog tensile; S275JR los ntawm lub zog tawm los. Rau kev tsim qauv, S275JR muab qhov kev lees paub zoo dua me ntsis ntawm cov khoom muaj zog hauv cov ntu nyias. |
| 3. Toughness yuav tsum tau | Tsis tas yuav tsum muaj kev cuam tshuam (Charpy) kev sim hauv cov qauv hauv paus. | Yuav tsum tau xeem qhov cuam tshuam: Ntau dua lossis sib npaug li 27 Joules ntawm +20℃(Room Kub). | S275JR muaj ib tug guaranteed yooj yim toughness; A36 tsis yog tshwj tsis yog cov kev cai ntxiv tau teev tseg (piv txwv li, rau choj). |
| 4. Tshuaj muaj pes tsawg leeg | Cov kev txwv yog dav dua, nrog qhov siab tshaj plaws xwb. C: Tsawg dua lossis sib npaug rau 0.26% (phaj Tsawg dua lossis sib npaug rau 20mm: 0.25%) Mn: Tsawg dua lossis sib npaug rau - (0.80-1.20% raug) P: Tsawg dua lossis sib npaug li 0.04% S: Tsawg dua lossis sib npaug li 0.05% |
Tighter, khoom -thickness- nyob ntawm qhov txwv. C: Tsawg dua lossis sib npaug rau 0.21% (rau t Tsawg dua lossis sib npaug rau 40mm) Mn: Tsawg dua lossis sib npaug li 1.50% P: Tsawg dua lossis sib npaug li 0.045% S: Tsawg dua lossis sib npaug li 0.045% Kuj yuav tsum tau ua kom zoo -kev xyaum nplej (piv txwv li, Al min). |
S275JR muaj kev tswj hwm nruj dua ntawm cov pa roj carbon thiab impurities, thiab tswj hwm cov nplej kom zoo rau kev sib xws. A36 chemistry yog qhov sib txawv dua. |
| 5. Qhov tseem ceeb Metallurgical Parameter | Carbon Equivalent (CE) tsis tau teev tseg. | Carbon Equivalent (CEV) xam. Ntau yam: ~0.30-0.38. | S275JR's tswj CEV ntau meej meej ua kom zoo weldability. A36's weldability yog qhov zoo tab sis tsawg dua cov qauv hauv cov qauv. |
| 6. Cov ntaub ntawv cov khoom & Thickness cov cai | Npog daim hlau, tuav, cov duab. Lub zog qhov tseem ceeb tsis txo qis nrog thickness nyob rau hauv tus qauv qhov ntau (txog 200mm). | Lub zog qhov tseem ceeb txo nrog nce thickness hauv cov kauj ruam uas tau teev tseg. Yuav tsum nco ntsoov siv tus nqi raug rau cov khoom tuab. | Rau cov ntu tuab, A36 qhov tsis tu ncua 250 MPa tawm los yuav muaj txiaj ntsig zoo dua li S275JR qhov txo qis tawm los (piv txwv li, 255 MPa rau 80mm phaj). |
| 7. Kev siv ntau | Kev tsim kho dav dav, txuas hniav, vaj tse, tshuab thav duab (US & thoob ntiaj teb cov haujlwm siv ASTM). | Kev tsim kho dav dav, lub tsev thav duab, kev tsim vaj tsev engineering (European & thoob ntiaj teb cov haujlwm siv EN). | Ua haujlwm sib hloov tau rau ntau yam uas tsis yog{0}} cov ntawv thov tseem ceeb, tab sis tsis tuaj yeem hloov pauv ncaj qha hauv cov lej- cov qauv tsim yam tsis muaj kev suav rov qab. |
Phau ntawv txiav txim ceev
| Scenario | Cov khoom uas nyiam / xav txog |
|---|---|
| Designing to US Codes (AISC, AWS) | Siv ASTM A 36 - nws yog cov khoom siv hauv Teb Chaws Asmeskas tsim phau ntawv. |
| Tsim rau Eurocodes (EN 1993) | Siv S275JR - nws yog cov khoom siv ib txwm muaj rau European tsim cov lej. |
| Yuav tsum tau lav chav-Tsub Toughness | Xaiv S275JR (qhov kev sim cuam tshuam yog qhov yuav tsum tau ua). Rau A36, koj yuav tsum qhia cov kev xav tau ntxiv. |
| Working with Thick Sections (>40mm) | Sib piv cov txiaj ntsig tau lees paub: A36 tuaj yeem muab lub zog qis dua qhov qis dua rau qhov tuab. |
| Nqi & Muaj | Hauv North America, A36 pheej yig dua thiab muaj ntau dua. Hauv Tebchaws Europe / Middle East / Asia, S275JR yog tus qauv. |
| Vuam & Fabrication | Ob leeg zoo heev. S275JR's tswj chemistry tuaj yeem muab cov txiaj ntsig zoo sib xws. |
Cov ntsiab lus
Lawv tsis yog tib cov hlau, tab sis lawv nyob hauv tib lub luag haujlwm ua haujlwm zoo ib yam, weldable, dav dav -lub hom phiaj steels.
Qhov sib txawv tseem ceeb yog kev xav: A36 yog tensile - lub zog - txhais cov hlau nrog cov kev cai yooj yim chemistry, thaum S275JR yog ib qho tawm los- lub zog - txhais cov hlau uas yuav tsum tau ua kom muaj zog thiab kev tswj xyuas nruj dua.
Rau cov phiaj xwm thoob ntiaj teb, qhov kev xaiv feem ntau yog txiav txim los ntawm kev tswj hwm tus qauv tsim thiab kev muaj nyob hauv zos, tsis yog los ntawm kev ua tau zoo ntawm ib qho ntawm lwm qhov.
