1. Mechanical Properties: Strengthening nrog Ductility Reduction
Yield & Tensile zog: Yield zog nce los ntawm20-30%(los ntawm kub- dov 345 MPa min mus rau 415-450 MPa); tensile zog nce los ntawm15-25%(los ntawm 480 MPa min mus rau 550-600 MPa), qhov tshwm sim ncaj qha ntawm cov nplej distortion thiab kev ntxhov siab sab hauv los ntawm cov yas txias deformation.
Hardness: Brinell hardness (HBW) nce los ntawm15-25%(los ntawm 180–220 txog 210–270 HBW), txhim kho nto tiv taus khawb, puas thiab me me.
Ductility & Formability: Elongation ntawm kev tawg poob qis heev (los ntawm kub- dov ≥20% mus rau ≤15%), thiab cov hlau poob lub peev xwm rau kev khoov ntse / sib sib zog nqus stamping-tsuas yog tiaj tus lossis maj mam khoov (loj radii) ua tau yam tsis muaj kev tawg.
Toughness: Ambient-kub toughness tseem tsis hloov pauv, tab sis qis-kub toughness (sub-zero) txo qis me ntsis (tsis pom zoo rau feem ntau SPA sab nraum zoov-H daim ntawv thov).
2. Dimensional & Surface Properties: Precision thiab Smoothness Txhim Kho
Dimensional raug: Thickness kam rau ua kom nruj heev (los ntawm kub - dov ± 0.5 hli mus rau± 0.05-0.1 hlirau nyias gauges), nrog zoo meej flatness (tsis muaj warping / undulation) thiab uniform dav / ntev - tseem ceeb rau precision fabrication (laser txiav, folding, sib dhos).
Nto Zoo: Cov txheej txheem txias dov mills tshem tawm kub - dov zeb nplai, ua ib qhosmooth, huv si, uniform nto(tsis muaj ntxhib oxide txheej). Qhov saum npoo no tsis tsuas yog txhim kho kev zoo nkauj tiav tab sis kuj txhawb kev nrawm dua, ntau dua txawm tias pib tsim patina rau kev siv vaj tse.
3. Corrosion Resistance: Tag Nrho Cov Ntsiab Cai (Tsis Muaj Kev Hloov Siab)
Cov txheej txheem txias - dov tsuas yog hloov cov hlau lub cev lub cev, tsis yog nws cov tshuaj lom neeg muaj pes tsawg leeg (Cu, Cr, P alloying cov ntsiab lus tseem tsis hloov) lossis kev faib tawm ntawm corrosion- tseem ceeb precipitates hauv matrix.
Txias-rolled SPA-H ua tib yam ntom ntom, tiv thaiv patina li kub-rolled SPA-H ntawm tus nqi zoo tib yam (6-12 lub hlis rau tag nrho tsim nyob rau hauv nroog / nyob deb nroog ib puag ncig), nrog rau tus nqi qis corrosion (0.01–0.03 mm / xyoo) patina{8.
Qhov txias txias -dov nto txawm txhawbntau uniform patina kev loj hlob(tsis muaj mill scale-induced uneven oxidation), ib qho txiaj ntsig me me rau kev zoo nkauj- tsom rau kev siv.
4. Weldability: Kev txo qis me ntsis (tswj nrog kev hloov pauv yooj yim)
Weldability poob qis me ntsis vim qhov nyuaj dua thiab kev ntxhov siab sab hauv: nyias nyias - dov ntsuas (1.6-6 mm) tseem xav tau tsis muaj preheating, tab sis xav tautsawg cua sov input welding txheej txheem(GMAW/MIG, FCAW) kom tsis txhob hlawv-los ntawm thiab txo qhov sib txawv ntawm qhov vuam (qhov kev pheej hmoo tseem ceeb).
Tsis muaj kev tshaj tawm -weld kev kho cua sov yog xav tau rau cov me me weld pob qij txha, thiab cov huab cua steel- cov khoom sib xyaw ua ke (xws li ER70S-W) khaws kev tiv thaiv corrosion hauv thaj tsam weld li niaj zaus.
