EN 10025 S235JR Steel Yeeb Nkab

 

S235JR yeeb nkab yog European tus qauv uas tsis yog-alloy structural steel yeeb nkab, sib npaug rau Tuam Tshoj tus qauv Q235B, uas yog cov pa roj carbon tsawg feem ntau siv rau vuam, bolted kev sib txuas, thiab cov qauv riveted.

Lub npe ntawm S235JR steel qhia:

1. "S" txhais tau hais tias ib hom qauv hlau.
2. "235" qhia qhov tsawg kawg nkaus tawm lub zog ntawm 235 MPa.
3. "JR" yog hais txog qhov cuam tshuam lub zog ntsuas kub ntawm 20 degree .
4. S235JR steel ua raws li tus qauv EN10025.
5. Cov khoom xa tuaj rau S235JR steel yeeb nkab tuaj yeem kub dov, tswj dov, normalising, lossis normalizing dov. Kev xa khoom tshwj xeeb yuav tsum tau teev tseg.

S235JR Structure Steel Tubes Specification

Thickness: 3-100 hli
Dav: 1000-3000mm
Ntev: 6000mm, 12000mm
Kev kho deg: liab qab.
Lub sij hawm xa tuaj: Hauv 7-25 hnub

Chemical Composition Ntawm Qib S235JR Yeeb Nkab:

Qib steel

C max (%)

Mn max (%)

max (%)

P max (%)

S max (%)

N max (%)

Cu max (%)

Lwm yam max (%)

CEV max(%)

Nominal thickness

Nominal thickness

Tsawg dua los yog sib npaug li 16

>16

>40

Tsawg dua los yog sib npaug li 30

>30

>40

Tsawg dua los yog sib npaug li 40

Tsawg dua los yog sib npaug li 40

Tsawg dua los yog sib npaug li 125

S235 JR

0,17

0,17

0,20

1,40

–

0.04

0,040

0,012

0,55

–

0,35

0,35

0,38

Chemical Composition Design ntawm S235JR

Cov tshuaj muaj pes tsawg leeg ntawm S235JR yog tsim los ua raws li EN10025 tus qauv, nrog rau cov hauv paus ntsiab lus ntawm kev ua tau raws li qhov yuav tsum tau ua thiab txo cov nqi tsim khoom. S235JR cov qauv hlau yuav tsum muaj lub zog siab thiab muaj kev cuam tshuam zoo rau qhov kub thiab txias (0 degree). Yog li ntawd, qhov muaj pes tsawg leeg yog tswj tau siv cov pa roj carbon tsawg (C) thiab qis phosphorus (P) txoj kev.

Manganese (Mn) nyob rau hauv cov hlau ib nrab yaj nrog hlau (Fe) los tsim ib qho kev daws teeb meem (ferrite los yog austenite), thiab ib nrab ua ke nrog hlau thiab carbon los ua cementite, uas tuaj yeem ntxiv dag zog rau ferrite thiab refine pearlite. Tsis tas li ntawd, vim muaj kev sib raug zoo ntawm Mn thiab sulfur (S), Mn tuaj yeem txhawb kev tsim ntawm manganese sulfide (MnS), uas muaj cov ntsiab lus melting ntau dua li hlau sulfide (FeS), yog li tiv thaiv FeS nag lossis daus ntawm cov ciam teb, txo kub. brittleness, thiab txhim kho kub workability.

Qhov tsim nyog ntxiv ntawm vanadium (V) raws li microalloy tuaj yeem txhim kho cov qauv nplej, them nyiaj rau lub zog poob vim qis cov ntsiab lus carbon, thiab ua kom ntseeg tau qhov ntsuas kub ntawm qhov ua tau zoo raws li European qauv. Vanadium nyob rau hauv cov hlau, nrog rau cov pa roj carbon thiab nitrogen, cov ntaub ntawv carbides, nitrides, los yog carbonitrides, uas ua rau cov nplej refinement thiab nag lossis daus, uas tuaj yeem txhim kho cov hlau lub zog thiab cuam tshuam rau lub zog.

S235JR Cov Tubes Cov Qauv

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cim npe nrov: en 10025 s235jr structural steel yeeb nkab, Tuam Tshoj en 10025 s235jr structural steel yeeb nkab manufacturers, lwm tus neeg