S235 vs S355 Structural Steel: Qhov kawg sib piv & Cov Lus Qhia Kev Sib Tw Ntiaj Teb

Thaum muab cov qauv hlau rau kev tsim kho, kev tsim vaj tsev, lossis tshuab, ob qho qauv European ua lag luam:TS EN 10025-2 S235thiabS355. Txawm hais tias lawv yuav zoo ib yam ntawm qhov chaw, qhov kev sib txawv ntawm ob cov hlau me me no yog qhov tseem ceeb rau kev nyab xeeb engineering thiab tus nqi - kev ua tau zoo.

Hauv phau ntawv qhia no, peb rhuav tshem cov chemistry, txhua yam khoom, thiab cov khoom sib npaug thoob ntiaj teb (ASTM, JIS, GB) los pab koj xaiv qhov kev yuav khoom zoo.

1. Qhov txawv ntawm Core S235 thiab S355 yog dab tsi?

Qhov tseem ceeb sib txawv yog nyob rau hauv lawvYield zog.

• S235:Muab qhov tsawg kawg nkaus yield zog ntawm235 MPa rau. Nws yog ib qho qis - carbon "mild steel" siv rau kev ua haujlwm dav dav uas cov khoom thauj loj tsis yog qhov kev txhawj xeeb tseem ceeb.
• S355:Muab qhov tsawg kawg nkaus yield zog ntawm355 MPa rau. Nws yog lub siab -lub zog, qis- hlau alloy (HSLA) steel tsim rau hnyav- cov haujlwm ua haujlwm xws li txuas hniav, cranes, thiab skyscrapers.

2. Nkag siab Cov Cim: S235 S355 JR, J0, thiab J2 txhais li cas?

Cov neeg yuav khoom feem ntau tau tsis meej pem los ntawm cov lus xaus. Cov no denoteImpact Toughness- cov hlau muaj peev xwm tiv taus qhov tawg ntawm qhov kub thiab txias.

JR:Impact test ntawm+20 degree(27 Jules). Qhov zoo tshaj plaws rau kev siv sab hauv tsev lossis kev siv huab cua.

J0:Impact test ntawm0 degree(27 Jules). Haum rau kev siv sab nraum zoov hauv cov huab cua nruab nrab.

J2:Impact test ntawm-20 degree(27 Jules). Yuav tsum tau rau cov qauv hnyav hauv qhov chaw txias.

K2:Impact test ntawm-20 degree(40 Joules). Rau ultra-lub luag haujlwm hnyav thiab kev nyab xeeb heev.

3. Kev sib npaug thoob ntiaj teb: S235 thiab S355 Hla-Cov Lus Qhia

Qhov no yog cov ntaub ntawv tseem ceeb tshaj plaws rau kev yuav khoom thoob ntiaj teb. Yog tias koj nrhiav tsis tau EN 10025 Tshuag, koj tuaj yeem hloov pauv nrog ASTM (USA), JIS (Nyiv), lossis GB (Tuam Tshoj) cov qauv.

■ S235 sib npaug (Mild Steel)

■ S355 Sib npaug (High-Strength Steel)

4. Cov lus nug nquag nug (FAQ)

Q: Kuv puas tuaj yeem hloov S235 nrog S355?

A:Feem ntau, yog. S355 muaj zog dua. Txawm li cas los xij, nws yog me ntsis kim dua thiab tej zaum yuav xav tau cov khoom siv vuam sib txawv rau cov phaj tuab. Siv S355 los ntawm S235 yog "tshaj- engineering" tab sis muaj kev nyab xeeb.

Q: Vim li cas S355 nrov dua rau cov tshuab hnyav?

A:S355 tso cai rau engineers sivdaim hlau nyiaslos txhawb nqa tib lub load, txo qhov hnyav tag nrho (tare hnyav) ntawm lub tshuab lossis lub tsheb, uas txhim kho roj efficiency thiab lub peev xwm payload.

Q: Puas yog S355 yog Weathering Steel?

A:No. Standard S355 yog carbon steel. Yog tias koj xav tau kev tiv thaiv corrosion, koj yuav tsum qhia meejS355J2W(Weathering Steel) los yog qib zoo liASTM A588 Cov Lus Qhia Tshwj Xeeb.

5. Vim li cas thiaj xaiv peb cov kev daws teeb meem hlau?

Ntawm GNEE STEEL, peb txuas qhov sib txawv ntawm European, Asmeskas, thiab Suav cov qauv.

Verified Mill Test Certificate (MTC):Ua raws li EN 10204 3.1.

Custom Fabrication:Peb muab CNC txiav thiab dabtsi yog khoov rau S235 thiab S355 qib.

Cov Qib Tshwj Xeeb:Nrhiav S355J2+N los yogWeathering Steel sib npaug (SPA-H/A588)? Peb muaj cov khoom npaj rau kev xa tawm thoob ntiaj teb.

[ Hu rau peb rau kev sib tw nqe lus ntawm S235 thiab S355 steel hnub no!]

Verified Quality: Baowu Masteel S355JR/J0 Steel Phaj Certificate

Thaum nws los txog rau cov qauv kev nyab xeeb, cov ntaub ntawv tsuas yog qhov tseeb. Hauv qab no yog daim ntawv pov thawj Mill Test (MTC) rau peb nyuam qhuav xa tuajS355J0thiabS355 JRhlau daim hlau.

Keeb kwm:Baowu Group (Xinyu Hlau & Hlau)

Ua raws li:EN 10025-2: 2019 Txuj

Lub ntsiab tseem ceeb:Peb 8mm S355J0 daim hlau qhia qhov nruab nrab cuam tshuam lub zog ntawm126J ntawm 0 degree, ze li 5 npaug ntawm tus qauv xav tau!

Ntawv pov thawj:Tag nrho CE cim thiab EN 10204 3.1 ua raws.

Tsis txhob cuam tshuam rau koj qhov project. Tau cov hlau uas tshaj cov qauv.

Mill Keeb Kwm:Baowu Group - Xinyu Hlau & Hlau(Lub ntiaj teb -chav tsev tsim steel).
Txheem:EN 10025-2: 2019

Daim ntawv pov thawj CE (2814/13), tag nrho ua raws li EU kev tsim khoom cov cai.

Certified rauEN 10204 3.1, xyuas kom tag nrho traceability los ntawm smelting mus rau lub phaj kawg.

Qhov zoo tshaj plaws Impact Toughness: Peb daim hlau S355J0 xa cov nqi hluav taws xob ntau tshaj li EN 10025 tus qauv, ua kom muaj kev nyab xeeb hauv qhov chaw txias.

High Yield Strength: Qhov tseeb yield zog ntawm 435 MPa muab ib qho kev nyab xeeb ntxiv rau cov qauv kev ua haujlwm hnyav.

[ Hu rau peb kom paub cov khoom muag tshiab thiab tus nqi]

Q1: Dab tsi yog qhov ze tshaj plaws thoob ntiaj teb sib npaug rau S355J2 steel?

A:S355J2 yog cov khoom kim heev European cov qauv hlau raws li EN 10025-2. Nws qhov sib npaug thoob ntiaj teb ze tshaj plaws suav nrog:

Teb Chaws Asmeskas:ASTM A572 Qib 50 (High{2}}lub zog qis- alloy steel).

Lub teb chaws Yelemees:DIN St52-3 (Keeb kwm tab sis dav lees paub).

UK:BS 4360 50D.

Nyiv:JIS SM490B.

Tuam Tshoj:GB/T Q355D.

Q2: Dab tsi yog qhov sib npaug ntawm S235JR me me hlau?

A:S235JR yog cov pa roj carbon ntau tshaj plaws rau kev tsim vaj tsev. Nws qhov sib npaug tseem ceeb yog:

Teb Chaws Asmeskas:ASTM A36 (txheej txheem steel).

Nyiv:JIS SS400 (General structural steel).

International:ISO E235B.
Cov qhab nia no sib pauv tau zoo rau cov uas tsis yog - cov ntawv thov kev tsim qauv tseem ceeb.

Q3: S235 vs. S355: Dab tsi yog qhov sib txawv technical?

A:Txawm hais tias lawv cov tshuaj muaj pes tsawg leeg yog qhov xav tsis thoob, qhov sib txawv tseem ceeb nyob hauvMechanical Properties.

Kev ua:Qhov kev hloov pauv yog los ntawm cov txheej txheem dov thiab cua txias siv hauv lub zeb.

Kev ua tau zoo:S355 muaj cov txiaj ntsig zoo dua thiab lub zog tensile ntau dua li S235, tso cai rau cov neeg ua haujlwm kom txo cov khoom hnyav thaum tswj kev ua haujlwm zoo.

Q4: Kuv yuav txiav txim siab li cas S355JR cov ntaub ntawv code?

A:Raws li EN 10025 tus qauv, cov cai tau tawg raws li hauv qab no:

"S":Luv rauKev tsim qauv, qhia nws daim ntawv thov.

"355":Sawv cev rauYam tsawg kawg Yield Strength(355 MPa).

"JR":Qhia txog qib zoo, tshwj xeeb tshaj yog qhov kev ntsuam xyuas ntawm 27 Joules ntawm chav tsev kub (+20℃). Lwm qhov kev hloov pauv xws li J0 (0 degree), J2 (-20 degree), thiab K2 (-20℃nrog 40J).

Q5: S275JR steel yog dab tsi thiab thaum twg nws siv?

A:S275 (xws li S275JR) ua raws li "hauv nruab nrab" ntawm S235 thiab S355.

Yield zog:Qhov nruab nrab qhov tsawg kawg nkaus yog 275 N / mm².

Qhov tseem ceeb Advantage:Nws muab lub zog siab dua S235 nrog zoo machinability thiab weldability dua S355. Nws muaj txiaj ntsig zoo dua li qub British tus qauv BS4360 43A/B/C/D.

Q6: Siv ceev: ASTM sib npaug rau EN 10025-2