Lub "355" hauv S355JR hais txog nws qhov kev tawm dag zog tsawg kawg nkaus ntawm 355 MPa, thaum "JR" qhia txog kev cuam tshuam zoo, tshwj xeeb tshaj yog thaum kub qis. Raws li qhov siab - lub zog steel qauv, S355JR feem ntau siv rau hauv cov ntawv thov uas hnyav hnyav.
lub cev muaj zog
Lub cev lub cev ntawm S355JR feem ntau suav nrog qhov ntom ntom, elastic modulus, thiab coefficient ntawm thermal expansion. Nws cov tshuaj muaj pes tsawg leeg cuam tshuam rau nws cov khoom siv kho tshuab thiab kev ua haujlwm. Hauv qab no yog qee qhov tseem ceeb ntawm lub cev thiab tshuaj lom neeg ntawm S355JR:
- Qhov ceev: kwv yees li 7.85 g / cm³;
- Tensile zog: Tsis pub tsawg tshaj 470 MPa;
- Yield zog: Yam tsawg kawg nkaus 355 MPa;
- Elongation: Tsawg kawg 21% (ntawm cov qauv qauv).
Tshuaj muaj pes tsawg leeg:
Carbon (C): Tsawg dua lossis sib npaug rau 0.21%
Manganese (Mn): 1.0% -1.6%
Phosphorus (P): Tsawg dua lossis sib npaug rau 0.045%
Sulfur (S): Tsawg dua lossis sib npaug rau 0.045%
Nta thiab qhov zoo:
High Strength: Ua tau raws li qhov yuav tsum tau ua rau siab - lub zog ntawm cov khoom siv.
Zoo Toughness: Kev ua haujlwm siab; tuav cov duab thiab kev ua tau zoo nyob rau hauv kev cuam tshuam los yog kev vibration.
Weldability zoo heev: Haum rau ntau yam txheej txheem vuam xws li phau ntawv arc vuam, submerged arc vuam, thiab roj shielded vuam.
Zoo Machinability: Cov khoom txias thiab kub ua haujlwm zoo; yooj yim txiav, khoov, thiab duab.
Zoo Corrosion Resistance: Resistant rau corrosion nyob rau hauv lub atmospheric ib puag ncig, ua tau raws li qhov yuav tsum tau rau feem ntau structural Cheebtsam.
S355JR Structural Tube Hoobkas
