Kev Ntsuas Kev Ntsuas ntawm Tsawg-Alloy Structural Steel: Kev ua tau zoo thiab kev siv ntawm Q355C, Q355D. Q355E, Q390B, S355J0, S235JR, S275JR, S355JR, thiab thoob ntiaj teb sib npaug

Tsawg-Alloy High-Strength Structural Steel (HSLA) hais txog cov qauv hlau alloy nrog tag nrho cov ntsiab lus alloy tsawg dua 5%. Nrog cov ntsiab lus carbon zoo ib yam li cov hlau me me, cov qib no vam khom cov ntsiab lus ntawm cov hlau alloying (xws li Manganese, Silicon, Vanadium, thiab Niobium) los txhim kho lub zog, txhim kho toughness, thiab xyuas kom zoo weldability.

I. Core Qib thiab Specification Ranges

Raws li cov qauv thoob ntiaj teb, cov qib sawv cev rau HSLA steel suav nrog:

Tuam Tshoj (GB): Q355C, Q355D, Q355E, Q390B

Teb chaws Europe (EN):S235JR, S275JR, S355JR, S355J0

Thickness Specifications:Feem ntau muaj los ntawm 2.0mm txog 25.0mm (thiab txog li 300mm rau cov phaj hnyav).

II. Technical Specifications thiab Performance Data

1. Basic Mechanical Properties Comparison

Cov lus hauv qab no qhia txog kev ua haujlwm ntawm cov khoom siv hluav taws xob ntawm cov qib tseem ceeb raws li cov qauv txheej txheem:

2. Cov ntsiab lus tshuaj lom neeg (EN 10025-2)

(Unit: Mass Fraction %, Qhov siab tshaj plaws tshwj tsis yog tias muaj ntau yam tau teev tseg)

II. Lub npe Conventions thiab Symbology

Kawm qib EuropeanS355J2+Nua piv txwv:

S:Cov ntsiab lusCov qauv hlau.

355:Qhia qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa.

J2:Qhia txog qhov cuam tshuam tsawg kawg nkaus ntawm 27 Joules kuaj ntawm-20 degree.

+N:Denotes lubLi qub(los yog Normalizing Rolled) kev xa khoom.

IV. Ntiaj teb no Standards thiab Qib Analysis

1. Tuam Tshoj Standard (GB)

Kev tsim tshwj xeeb tsom rau Yield Strength (Q) ua raws li qhov ua tau zoo thiab cov txheej txheem ua tiav.

Q355 Series:Feem ntau siv HSLA steel nrog cov khoom zoo heev. Qib B (Kev cuam tshuam ntawm 0 degree) thiab Qib C (Kev cuam tshuam ntawm-20 degree) feem ntau yog.

Q235 Series:Classic carbon steel qauv. Tsawg zog tab sis siab plasticity thiab weldability; zoo tagnrho rau cov qauv tsis raug rau dynamic loads.

Tshwj xeeb hlau:Suffixes qhia txog kev siv tshwj xeeb, xws li,Q355R(Pressure Vessel Steel),Q355q(Bridge Steel).

2. European Standard (EN)

Lub kaw lus nruj txhais cov kev pab cuam ntawm cov lus xaus.

S355J2:Yuav tsum -20℃cuam tshuam toughness.

S355J0:Yuav tsum tau 0℃cuam tshuam toughness.

S355K2:Yuav tsum tau -20℃cuam tshuam toughness nrog ntau zog yuav tsum tau.

S355 NL:Raws li cov dov los yog cov hlau tsis zoo rau qis - qhov kev pabcuam kub, xav tau −50℃cuam tshuam toughness.

S355 Series:Feem ntau suav hais tias yog "universal language" ntawm lub ntiaj teb steel kev lag luam, feem ntau zoo sib xws nrog Tuam Tshoj Q355.

3. American Standard (ASTM)

Tsom ntsoov rau qhov kawg - siv cov khoom siv.

ASTM A992 Txuj:Cov khoom tseem ceeb rau cov qauv duab (Kuv-beams/Wide flanges), sib txuas lub zog, weldability, thiab ductility.

ASTM A572 Qib 50:HSLA steel nrog qhov tsawg kawg nkaus tawm ntawm 50 ksi (≈345 MPa), dav siv rau hnyav- cov kav dej thiab cov tsev.

4. Japanese Standard (JIS)

Cov qhab nia ncaj qha cuam tshuam txog kev npaj ua daim ntawv thov thiab kev ua tiav.

SS Series (Cov Qauv Txheej Txheem):np., SS400. Tsom ntsoov rau lub zog tensile; muaj nyob rau hauv cov tsev thiab cov choj.

SM Series (Vuam Txheej Txheem):eg 490 ua. Tshwj xeeb optimized rau weldability thiab lub zog.

SPHC:Kub- dov steel ntawv thiab sawb rau kev siv dav dav (tsis yog- qauv).

V. Ntiaj teb sib npaug Table (Medium & Heavy Phaj)

Cov lus hauv qab no sib piv cov qib sib txawv thoob ntiaj teb cov qauv rau kev siv zoo sib xws thiab qib zog.

Lus Cim: Cov lus no yog rau kwv yees siv xwb. Nco ntsoov sab laj cov ntaub ntawv tseem ceeb rau cov ntsiab lus tshwj xeeb thiab cov khoom siv kho tshuab.

VI. Nto Classifications thiab Qib Zoo

Surface quality yog categorized rau hauv cov chav kawm hauv qab no:

Chav Kawm FA (Ordinary Surface):

Acid Pickled Nto:Tso cai me me, hauv cheeb tsam tsis xws luag xws li pits, kev nyuaj siab, thiab khawb, yog tias lawv qhov tob tsis tshaj ib nrab ntawm cov thickness kam rau ua thiab qhov tsawg kawg nkaus tso cai thickness yog khaws cia.

Chav Kawm FB (Fairly High Surface):

Acid Pickled Nto:Tso cai rau thaj chaw uas tsis muaj kev cuam tshuamformability, xws li khawb me ntsis, me ntsis indentations, me ntsis pits, yob cov cim, thiab xim variations.

VIII. Cov txheej txheem rau kev xaiv cov khoom siv thiab hloov pauv

Kev hloov khoom siv yog ib txoj haujlwm nruj heev. Ib txwm ua raws li cov ntsiab cai no:

• Ua raws li Design Specifications:Ua tib zoo ua raws li cov qauv thiab cov qib uas tau teev tseg hauv qhov project kos duab thiab cov phau ntawv qhia tshwj xeeb.
• Txoj Cai "High-rau-Low":Tsis txhob hloov raws li Yield Strength. Ntsuas tshuaj muaj pes tsawg leeg, cuam tshuam toughness, weldability, thiab kev pabcuam kub. Piv txwv li, thaum siv S355J2 los hloov Q355B, xyuas kom meej qhov −20℃cuam tshuam toughness raws li qhov yuav tsum tau muaj.
• Certification & Ua raws li:Cov phiaj xwm xa tawm yuav tsum muaj daim ntawv pov thawj zeb xeem (MTC) lossis thib peb- daim ntawv pov thawj thib peb (CE Marking, ASTM daim ntawv pov thawj) ua raws li lub teb chaws tus qauv.
• Tham nrog cov kws tshaj lij:Nco ntsoov sab laj nrog cov kws tsim qauv tsim qauv lossis cov kws paub txog khoom siv thaum ua cov khoom tseem ceeb hloov pauv.

Summary of Features:Tsawg- alloy structural steel muaj qhov sib npaug zoo ntawm kev siv tshuab, weldability, toughness, thiab elongation. Nws yog dav adaptable rau steel qauv, yeeb nkab manufacturing, siv machinery, kev loj guardrails, txuas hniav, shipbuilding, thiab automotive structural Cheebtsam.

Puas yog S235JR sib npaug rau A36?

Ob leeg yog cov hlau me me nrog cov ntsiab lus carbon tsawg, muab cov weldability zoo thiab formability. Qhov tseeb,AWS D1. 1 (American Welding Society) tso cai S235JR raws li qhov sib npaug rau A36 rau vuam lub hom phiaj, thiab lawv feem ntau sib pauv hauv cov haujlwm thoob ntiaj teb.

Qhov txawv ntawm S235JR thiab S355JR yog dab tsi?

Yield zog:S235JR muaj lub zog nominal yield ntawm 235 MPa, thaum S355JR muaj lub zog ntau dua ntawm 355 MPa. Qhov no 50% nce nyob rau hauv lub zog tawm los ua rau S355JR muaj peev xwm tiv taus cov loads ntau dua, ua rau nws tsim nyog rau siab - cov ntawv thov kev ntxhov siab.

Qhov txawv ntawm S235JR thiab S275JR yog dab tsi?

S235JR yog siv rau hauv cov ntawv thov tsawg dua, xws li kev tsim kho dav dav, cov qauv sib sib zog nqus, thiab cov khoom siv uas qis zog txaus (xws li, kab teeb, kab, thiab thav duab). S275JR yog qhov zoo dua rau cov ntawv thov uas xav tau lub zog ntau dua, xws li cov khoom hnyav dua, txuas hniav, lossis cov khoom siv tshuab.

Dab tsi yog qhov txawv ntawm DC01 thiab S235JR cov khoom?

Qhov txawv ntawm KGW DC01 thiab WGW S235JR yog dab tsi?KGW DC01 yog txias- dov nrog ib tug smoother nto thiab nruj tolerances; WGW S235JR yog kub- dov thiab feem ntau muaj rougher tiav.

S235JR sib npaug li cas?

GNEE teel Siab -Kev Ua Haujlwm Tshwj Xeeb Daim Hlau

Rau qhov xwm txheej loj engineering, peb muab cov hauv qab no siab - cov phaj ua haujlwm:

• Pressure Vessel Steel Phaj:Vanadium- alloyed steel, Cr-Mo steel, HIC- steel resistant,Chav Drum Phaj, 13MnNiMoR, SA299, SA302, thiab lwm yam.
• Cryogenic Steel Phaj:3.5% Ni hlau (08Ni3DR), 5% Ni steel (A645),9% Ni hlau(O6Ni9DR), thiab lwm yam, tau lees paub los ntawm cov koom haum thoob ntiaj teb kev faib tawm.
• Offshore Engineering Phaj:A514GrQ, A517GrQ, EQ Series siab -lub zog steel, E(F)420 - E(F)690, thiab lwm yam.
• Nuclear Power Engineering Phaj:SA738, SA533, 16MnD5, 18MnD5, 20 (Mn) HR, thiab lwm yam.
• Hydropower Engineering Phaj:High -lub zog steel rauPenstocks(WSD690E), turbine units,Nyob Rings, thiabQhia Vanes.
• Heavy-Gauge Electroslag Remelted (ESR) Phaj:Q235 rau Q550 series, lav rauKev kuaj ultrasonic (UT)thiabZ-Kev taw qhia(Los ntawm -thickness) khoom.
• High-Grade Wear-Resistant & Pwm Steel,X80 thiab siab dua Pipeline Steel, Txoj Kev Tanker Steel, thiab hnyav- ntsuas pwm daim hlau.