Cov khoom siv tshuaj ntawm Q345GNH weathering steel phaj
Q345GNH weathering steel phaj yog lub zog muaj zog qis-alloy structural steel nrog zoo vuam kev ua tau zoo, tsis tshua muaj kub toughness thiab atmospheric corrosion kuj.
Q345GNH weathering phaj yog dav siv nyob rau hauv welded lug xws li vaj tse, txuas hniav, yees, cranes, ships, siab hlab ntsha, raws li zoo raws li cov yam ntxwv qhov chaw uas yuav tsum tau tiv thaiv corrosion xws li cov chaw loj thiab cov chaw sab nraum zoov.
Q345GNH Atmospheric Corrosion Steel Phaj Chemical Element
| Element | Min | Max | Zoo sib xws |
|---|---|---|---|
| Ti | - | 0.0300 | - |
| Si | 0.2000 | 0.6000 | - |
| S | - | 0.0350 | - |
| RE | - | 0.1500 | - |
| P | 0.0700 | 0.1200 | - |
| Mn | 0.5000 | 0.9000 | - |
| Cu | 0.2500 | 0.5000 | - |
| C | - | 0.1200 | - |
Q345GNH Corrosion Resistant Steel Phaj Mechanical Properties
| Yield Rp0.2(MPa) |
Tensile Rm(MPa) |
Kev cuam tshuam KV/Ku (J) |
Elongation A (%) |
Kev txo qis hauv ntu ntu ntawm pob txha Z (%) |
Raws li-kub-kho mob | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 462 (Ntau dua lossis sib npaug) | 223 (Ntau dua lossis sib npaug) | 32 | 43 | 23 | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam | 313 |
Q345GNH Atmospheric Corrosion Resisting Structural Steel Lub cev muaj zog
| Kub (degree) |
Modulus ntawm elasticity (GPa) |
Lub ntsiab lus coefficient ntawm thermal expansion 10-6/( degree ) ntawm 20 (degree) thiab | Thermal conductivity (W / m· degree) |
Tshwj xeeb thermal muaj peev xwm (J / kg · degree) |
Tshwj xeeb hluav taws xob resistivity (Ω mm² / m) |
Qhov ntom (kg/dm³) |
Poisson tus coefficient, ν |
|---|---|---|---|---|---|---|---|
| 32 | - | - | 0.22 | - | |||
| 375 | 361 | - | 14.3 | 244 | - | ||
| 919 | - | 41 | 31.2 | 422 | 132 |
