Peb tuaj yeem muab ntau qhov loj me GB Q345D GB / T 1591 steel daim hlau, GB Q345D GB / T 1591 steel coils, GB Q345D GB / T 1591 steel tuav, steel qauv, yog tias koj muaj kev tshwj xeeb, thov hu rau peb. los muab kev pabcuam tus kheej rau koj.
Peb kuj muab GB Q345D GB / T 1591 cov kev pabcuam ua haujlwm, raws li cov kev xav tau thiab cov duab kos los ntawm cov neeg siv khoom, kev cai ua ntu rau ntau yam kev xav tau.
GB Q345D GB/T 1591 Chemistry
Carbon, silicon, manganese, phosphorus thiab sulfur yog cov ntsiab lus tseem ceeb ntawm GB Q345D GB / T 1591.
Cov pa roj carbon monoxide yog qhov tseem ceeb tshaj plaws hardening nyob rau hauv steel.
Silicon pab txhawb kev tiv thaiv. Zoo li manganese, silicon yog siv los tswj lub zog ntawm cov hlau thaum nws tsim khoom.
Manganese yog qhov tseem ceeb stabilizing lub hauv paus hauv austenite thiab pab tsim cov qauv kev ntxhib los mos thiab ntxiv dag zog, lub zog thiab hnav tsis kam.
Phosphorus yog ib qho teeb meem. Nws txo cov plasticity thiab toughness ntawm cov hlau thiab txias brittleness tshwm. Nws tuaj yeem ua kom muaj zog ntawm cov hlau thiab txhim kho atmospheric corrosion stability. Nws cov ntsiab lus yuav tsum txwv tsawg dua 0.05 feem pua .
Feem ntau, sulfur yog ib qho teeb meem, uas ua rau kub brittleness ntawm steel siab, thiab cov ntsiab lus sulfur raug txwv tsawg dua 0.05 feem pua.
| Element | min | Max | Zoo sib xws |
|---|---|---|---|
| C | - | 0.1800 | - |
| Yog lawm | - | 0.5000 | - |
| min | - | 1.7000 | - |
| P | - | 0.0300 | - |
| yog | - | 0.0250 | - |
| NB | - | 0.0700 | - |
| v | - | 0.1500 | - |
| Koj | - | 0.2000 | - |
| Cr | - | 0.3000 | - |
| Tsis yog | - | 0.5000 | - |
| Cu | - | 0.3000 | - |
| N | - | 0.0120 | - |
| Mo | - | 0.1000 | - |
| als | 0.0150 | - | - |
| Koj | 0.0200 | 0.2000 | - |
| Rau qhov | 0.0150 | - | - |
| NB | 0.0150 | 0.0600 | - |
| v | 0.0200 | 0.1500 | - |
| yog | - | 0.0300 | - |
| min | 1.0000 | 1.6000 | - |
| Yog lawm | - | 0.5500 | - |
GB Q345D GB/T 1591 Mechanical
Yog xav paub ntxiv txog cov khoom siv kho tshuab ntawm GB Q345D GB / T 1591 steel, thov mus saib cov lus hauv qab no:
Kev ua tau zoo Rp 0.2 (MPa) | Lim Rm (MPa) | Kev cuam tshuam KV/Ku (J) | Elongation A (%) | Hla ntu txo ntawm pob txha Z (%) | Kev kho cua sov raws li txoj cai | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 314 (Ntau dua lossis sib npaug) | 612 (Ntau dua lossis sib npaug) | 12 | 44 | 13 | Kev daws thiab Kev laus, Annealing, Ausaging, Q ntxiv T, thiab lwm yam. | 321 |
GB Q345D GB/T 1591 Lub cev
Lub cev muaj zog ntawm GB Q345D GB / T 1591 feem ntau npog cov qauv ntawm elasticity, coefficient ntawm thermal expansion, thermal conductivity, tshwj xeeb kub muaj peev xwm, hluav taws xob kuj nqi, ceev, Poisson tus piv, thiab lwm yam.
Kub (degree) | Modulus ntawm elasticity (GPa) | Nruab nrab coefficient ntawm thermal expansion 10-6/( degree ) ntawm 20 (degree) thiab | Thermal conductivity (W / m-degree) | Tshwj xeeb kub muaj peev xwm (J / kg-degree) | Tshwj xeeb hluav taws xob resistivity (Ωmm² / m) | Qhov ntom (kg/dm³) | Poisson tus ratio, ν |
|---|---|---|---|---|---|---|---|
| 11 | - | - | 0.43 | - | |||
| 735 | 259 | - | 43.3 | 111 | - | ||
| 576 | - | 23 | 11.2 | 311 | 423 |
GB/T 1591 Lwm qib lossis qib zoo sib xws
| Qib | Txuj | Thaj chaw | Cov ntsiab lus |
|---|---|---|---|
| qw 420e | GB/T 1591 | Tuam Tshoj | Low-alloy, high-strength steel qauv |
| qw 420d | GB/T 1591 | Tuam Tshoj | |
| q500c ua | GB/T 1591 | Tuam Tshoj | |
| q420 ib | GB/T 1591 | Tuam Tshoj | |
| qw 420a | GB/T 1591 | Tuam Tshoj | |
| qw 460c | GB/T 1591 | Tuam Tshoj |
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