Q345 yog qhov qis -} Alloy alloy, Siab -}}}} {}}} Cov Hlau Cuab Yeej Siv Hauv Lub Tsheb, cov choj, thiab cov haujlwm tsim kho. Nws tau ua raws li GB / T 1591, qhov twg "hais tias" QUICCE cov txiaj ntsig tau, thiab "345" sawv cev rau cov tsawg kawg nkaus lub zog hauv MPa. Nco ntsoov tias cov paib muaj zog txo qis me ntsis raws li cov khoom tuab nce.
Cov ntaub ntawv sib npaug
Q345 steel tuaj yeem hloov nrog cov qhab nia sib luag Cov Qib International, xws li:
A572 Qib 50 (Tebchaws Asmeskas, Astm)
Q355 (Suav teb, GB / T)
SPFC 590 (Vietnam / Nyiv, JIS)
Cov yam ntxwv tseem ceeb
Tos lub zog: 345 MPa - kev ntxhov siab ntawm cov khoom pib ua kom deform plastically. Ua ntej mus txog qhov no, nws yuav rov qab mus rau nws cov qub duab.
Lub zog tensile: 470-660 MPA - muaj peev xwm tiv thaiv hnyav hnyav {2} duty} lub luag haujlwm ntim ua ntej tsis ua tiav.
Elongation: ~ 20% - Tso cai rau qhov tseem ceeb deformation ua ntej tawg.
Weldability: zoo heev, vim kev ua kom tau zoo tshuaj lom neeg thiab txhim kho cov thev naus laus zis ntau lawm.
Durability: siab {- qhov siab thiab txias - kub kuj, haum rau cov txheej txheem raug -40℃lossis hauv qab cov nra hnyav.
Cov Kev Siv Raug Raug
Q345 steel yog heev veratile thiab dav siv rau hauv:
Tsev qauv qauv thiab cranes
Txuas hniav thiab nkoj
Roj Roj Tso Tsheb Hlau Luam Thiab Lifting Machinery
Fais fab chaw thiab tsuas Machinery
Cov khoom siv tshuab thiab cov qauv txheej txheem nthuav tawm rau cov kub lossis hnyav thauj khoom
Cov Khoom Siv Lub Cev
| Ntiag tug | Me me | Asmeskas / Imperial |
|---|---|---|
| Ceev | 7.80 g / cc | 0.282 lb / pw |
| Loj modulus | 160 GPA | 23,200 KSI |
| Shear Modulus | 80.0 GPA | 11,600 ksi |
Cov Khoom Siv Neeg Kho Tshuab
| Ntiag tug | Me me | Asmeskas / Imperial |
|---|---|---|
| Brinell hardness | 135 | 135 |
| Rockwell b hardness | 74 | 74 |
| Paib lub zog | 345 MPa | – |
| Tensile lub zog, qhov kawg | 450 MPa | – |
| Elongation thaum so | 18–21 % | 18–21 % |
Tshuaj Muaj Tshuaj
| Lub ntsiab | Max / Ntau Yam |
|---|---|
| Carbon (c) | Tsawg dua los yog sib npaug rau 0.23% |
| Hlau (FE) | 98% |
| Manganese (mn) | 1.35% |
| Phosphorus (p) | Tsawg dua los yog sib npaug rau 0.040% |
| Silicon (si) | 0.15–0.55% |
| Sulphur (s) | Tsawg dua los yog sib npaug rau 0.050% |
Q345 steel sib xyaw ua ke siab, zoo heev - huab cua huab cua kev ua tau zoo, ua rau kev xaiv zoo tshaj plaws rau kev thov cov kev thov ua kom xav tau.
