S275JR (EN 10025-2) Cov khoom siv hlau sib npaug hauv Suav teb
Qhov ncaj thiab feem ntau lees txais sib npaug rau European tus qauvS275 JRhauv Suav teb yogQ275Braws li lub teb chaws tus qauvGB/T 700(Carbon Structural Steels).
Ntawm no yog cov lus sib piv kom ntxaws:
Thawj qhov sib npaug: GB / T 700 Q275B
Txuj |
TS EN 10025-2 |
GB/T 700 |
Cov txheej txheem sib txawv tab sis lub hom phiaj sib txawv. |
| Qib Lub ntsiab lus |
S=Qauv
275=Min Yield (MPa)
J=+20℃cuam tshuam
R=27 J Min |
Q=Yield Strength Character
275=Min Yield (MPa)
B=Qib Zoo (Room Temp Impact) |
Tsab ntawv coding txawv, tab sis 275 MPa yield zog thiab chav - ntsuas qhov kub thiab txias yog qhov sib piv ncaj qha. |
| Yam tsawg kawg nkaus Yield Strength (ReH/Rel) |
275 MPa (rau thickness Tsawg dua lossis sib npaug li 16 hli)
Txo nrog thickness |
275 MPa (rau thickness Tsawg dua lossis sib npaug li 16 hli)
Txo nrog thickness |
Cov khoom tseem ceeb sib phim. Ob qho qauv qhia tau hais tias txo cov qoob loo rau cov ntu tuab. |
| Tensile zog (Rm) |
410 - 560 MPa |
410 - 540 MPa |
Ze li qhov sib npaug. |
| Impact Toughness (KV) |
Ntau dua lossis sib npaug li 27 J ntawm +20 degree |
Ntau dua lossis sib npaug li 27 J ntawm +20 degree |
Kev xav tau zoo ib yam. Qib "B" hauv GB / T 700 tswj qhov kev xeem no. |
| Chemical Composition (Max %) - Hom |
C: 0.21
1.50 Nws
ib: 0,55
P: 0.045
S: 0.045 |
C: 0.21
1.50 Nws
Ib: 0.35
P: 0.045
S: 0.045 |
Nyob ze heev. Qhov sib txawv tseem ceeb: Q275B muaj cov ntsiab lus qis tshaj Silicon (Si) (0.35% vs 0.55%). |
| Deoxidation / Grain xyaum |
Kev xyaum ua kom zoo (piv txwv li, Al min) yuav tsum tau ua. |
Feem ntau tua cov hlau (镇静钢), tab sis cov nplej refinement tsis tau hais meej meej raws li hauv EN. |
S275JR muaj stricter metallurgical tswj rau grain loj. |
| Daim ntawv thov tseem ceeb |
Kev tsim kho dav dav, lub tsev thav duab, tshuab. |
Kev tsim kho dav dav, lub tsev thav duab, tshuab. |
Ua haujlwm sib hloov tau rau feem ntau tsis yog - lub hom phiaj tseem ceeb ntawm cov qauv. |
Cov ntsiab lus tseem ceeb & Lwm Yam Muaj Peev Xwm Suav sib npaug
GB / T 1591 (High Strength Low Alloy) |
Q275B (hauv GB / T 1591) |
Yog hais tias nyob rau hauv lub siab - lub zog tus qauv. |
GB / T 1591 muaj cov cai sib txawv me ntsis. GB / T 700 Q275B yog qhov sib tw ntau dua. |
| GB/T 700 |
Q275A |
Yog tsis muaj kev cuam tshuam toughness yuav tsum tau. |
Q275A tsis muaj Charpy cuam tshuam kev xeem yuav tsum tau. Qhov no ua rau nws sib npaug rau qhov tsis muaj -muaj "S275" yam tsis muaj "JR". |
| GB/T 700 |
Q235B |
Incorrect but common yuam kev. Q235B muaj zog tawm los qis (235 MPa). |
Tsis muaj zog. Siv rau cov qauv uas xav tau tsawg dua. |
| GB / T 699 (Cov pa roj carbon zoo) |
25 # lossis 30 # steel |
Rau machining qhov chaw, tsis yog cov qauv. |
Cov no yog cov pa roj carbon zoo rau cov khoom siv engineering, tsis yog cov khoom siv. |
Hloov Cov Lus Qhia
| Qhov xwm txheej |
Pom zoo Suav sib npaug |
Yog vim li cas |
| Kev hloov khoom ncaj qha hauv cov duab kos / specs hu rau EN 10025-2 S275JR. |
GB/T 700 Q275B |
Kev sib tw ze tshaj plaws hauv lub zog, toughness, thiab daim ntawv thov Scope. |
| Kev xa khoom hauv Suav teb rau kev xa tawm mus rau kev lag luam siv EN cov qauv. |
Thov cov ntaub ntawv pov thawj rau EN 10025-2 S275JR los ntawm lub zeb. |
Ua kom muaj kev ua raws li tus qauv qub, zam cov teeb meem kev txhais lus. |
| Tsim ib tus lej Suav (GB 50017) rau qib kev ua tau zoo sib xws. |
Q275B (GB/T 700) |
Cov khoom siv hauv Suav teb tsim qauv tsim. |
| Yog hais tias cuam tshuam toughness tsis yog ib qho yuav tsum tau. |
Q275A (GB/T 700) |
Txuag tus nqi. Yuav tsum tau pom zoo los ntawm tus tsim qauv. |
| Rau cov qauv tseem ceeb / welded qhov twg tswj qhov loj me yog qhov tseem ceeb. |
Xyuas kom cov Q275B muab tau raws li kev coj ua zoo los yog qhov chaw EN- ntawv pov thawj S275JR. |
S275JR tus txheej txheem tswj hwm cov nplej ua kom zoo; Q275B's tsis meej. |
Lus Cim Kawg:Thaum Q275B yog tus qauv sib npaug, rau kev cog lus thiab kev lees paub zoo ntawm cov haujlwm uas tau teev tseg rau EN cov qauv, nws yog ib txwm pom zoo rau cov khoom siv nrog EN 10025-2 ntawv pov thawj es tsis yog tso siab rau "tus qauv sib npaug." Qhov no tsis txhob muaj kev tsis sib haum xeeb txog qhov sib txawv me me hauv kev tsim kev kam rau siab lossis kev sim cov txheej txheem.
Hu rau tam sim no
