EN structural steel S355JR feem ntau yog nyob rau hauv daim ntawv ntawm S355JR steel phaj. Lub thickness tau teev tseg rau S355JR steel phaj raws li tau txais los ntawm online txheeb cais hauv khw pib los ntawm 3mm txog 400mm. Txawm li cas los xij lub zeb ntug dav S355JR steel kauj txawv ntawm 1250 hli mus rau 1500 hli. S355JR stee nplooj tuaj yeem txiav rau hauv qhov ntev sib txawv. Raws li nws tau muab rau hauv ntau hom ntawv ib yam nkaus, EN structural steel S355JR qhov ntev yuav tsum raug txheeb xyuas los ntawm cov neeg muag khoom ua ntej yuav khoom.
Mechanical Properties Sib piv
S355NL vs S355JR txhua yam khoom sib txawv feem ntau nyob rau hauv toughness thiab kuaj tej yam kev mob.
|
Khoom |
S355NL (EN 10025-3) |
S355JR (EN 10025-2) |
|---|---|---|
|
Yield zog (min, MPa) |
||
|
Tsawg dua los yog sib npaug li 16 hli |
355 |
355 |
|
16 |
345 |
345 |
|
40 |
335 |
335 |
|
Tensile zog (MPa) |
470-630 |
470-630 |
|
Elongation (min,%) |
22 (tsawg dua lossis sib npaug li 63 hli) |
22 (tsawg dua lossis sib npaug li 40 mm) |
|
Impact Zog (min, J) |
27 @ -50℃(ntev) |
27 @ +20℃(yog tias kuaj) |
Lub zog: Ob qib sib piv cov txiaj ntsig zoo ib yam (355 MPa) thiab lub zog tensile (470-630 MPa) rau cov tuab zoo sib xws, ua kom muaj peev xwm sib piv.
Toughness: Qhov tseem ceeb S355JR vs S355NL qhov txawv yog toughness. S355NL's -50℃kev ntsuam xyuas qhov cuam tshuam (Ntau dua lossis sib npaug ntawm 27 J) haum rau cov huab cua tsis zoo, thaum S355JR's +20 kev ntsuas ntsuas (lossis tsis muaj) txwv nws rau cov mob hnyav dua.
Thickness Range: S355NL txhawb nqa txog li 250 hli nrog cov khoom muaj zog tsawg- kub; S355JR mus txog 250 hli tab sis tsis tau lees tias qhov kev ua haujlwm txias.
Vuam thiab kev kho cua sov
S355 NL: CEV Tsawg dua lossis sib npaug rau 0.43% ua kom zoo weldability nrogGMAWlos yogSAW (EN 1011-2). Preheating (100-150°C) for >20 hli; PWHT (550-650 degree) xaiv tau. Consumables: ER70S-6 (GMAW), EM12K flux nrog EH14 hlau (SAW).
S355 JR: CEV ≤0.45% supports welding but requires more preheating (>25 hli) vim muaj cov pa roj carbon ntau dua thiab impurities. Tib yam khoom siv siv tau.
S355NL vs S355JR vuam qhov sib txawv nyiam S355NL rau kev txo cov vuam tsis zoo vim nws qhov zoo- cov qauv nplej thiab qis CEV.
Daim ntawv thov
S355 NL:
Offshore platforms nyob rau hauv qhov chaw txias marine.
Cua yees hauv sub- huab cua tsis zoo.
Cov choj thiab cranes nyob rau sab qaum teb.
Nws -50℃toughness kom ntseeg tau tias nyob rau hauv huab cua txias. Saib EN 10025-3 S355NL normalized structural steel phaj.
S355 JR:
Kev tsim lub moj khaum nyob rau hauv temperate climates.
Cov choj thiab cov tshuab hauv nruab nrab.
General fabrication qhov twg tus nqi yog qhov tseem ceeb.
S355JR vs S355NL daim ntawv thov sib txawv qhia txog S355NL qhov haum rau qhov chaw txias thiab S355JR tus nqi pheej yig rau cov qauv txheej txheem. Qhov cuam tshuam ib nrab ntawm s355nl s355j2 qhia txog S355JR qhov zoo sib xws rau S355J2, uas muaj -20℃toughness tab sis tseem tsis tshua muaj txias-hloov dua S355NL.
Qib sib npaug
S355 NLASTM A633 Qib E, Q345E (Tuam Tshoj), STE 355 (DIN).
S355 JRASTM A572 Qib 50, Q345B (Tuam Tshoj), SM490A (JIS).
Saib EN 10025-3 S420NL normalized structural steel phaj.
FAQ:
Q: Koj puas yog lub Hoobkas lossis tuam txhab lag luam?
A: Peb yog cov chaw tsim khoom thiab muaj ntau xyoo kev tsim khoom thiab kev tswj xyuas.
Q: Koj puas muaj kev pabcuam tom qab- muag?
A: Tau kawg, koj tuaj yeem tiv tauj peb txhua lub sijhawm.peb cog lus tias peb cov khoom tsim nyog. Yog tias koj pom cov khoom tsis tsim nyog thiab tsis txaus siab rau qhov koj xav tau, thov hu rau peb txhua lub sijhawm.
Cim npe nrov: Tuam Tshoj siab zog structural s355jr steel phaj manufacturers, lwm tus neeg, Hoobkas
