ASTM A179 seamless boiler steel raj rau cua sov exchangers piav qhia
Cov yam ntxwv tseem ceeb ntawm ASTM A179 seamless low - carbon steel tubing. Hom tubing no feem ntau yog ua los ntawm qis- carbon steel, pom zoo corrosion kuj thiab siab - kub stability. Nws txoj kev tsim seamless txo qhov kev pheej hmoo ntawm kev xau thiab kev tawg thaum raug kev kub ntxhov thiab kub siab, yog li ua kom muaj kev ua haujlwm zoo thiab kev pabcuam lub neej ntawm cov khoom siv. Tsis tas li ntawd, ASTM A179 seamless low - carbon steel tubing muaj cov thermal conductivity zoo, zoo hloov cov cua sov thiab txhim kho kev sib hloov cua sov thiab kev ua kom zoo.
Kev Xav Tau
Raw Material Requirements: Cov khoom siv raw yuav tsum ua kom tau raws li qhov yuav tsum tau muaj hauv cov qauv tshiab ntawm A450 / A450M.
Cov txheej txheem ntau lawm: Cov kav hlau yuav tsum yog cov kav hlau tsis muaj seamless thiab ua tiav los ntawm kev kos duab txias.
Kev kho cua sov: Cov kav hlau yuav tsum tau kho cua sov ntawm 1200 degrees Fahrenheit (650 degrees Celsius) lossis siab dua tom qab kos duab txias kawg.
Yam Yuav Tsum Tau Ua: Cov kav dej tiav yuav tsum tsis muaj tev tawm; ib qho me me ntawm oxides tsis suav tias yog tev.
Chemical Composition: Cov tshuaj muaj pes tsawg leeg ntawm cov kav hlau yuav tsum ua tau raws li cov cai, suav nrog cov ntsiab lus carbon ntawm 0.06% thiab 0.18%, manganese cov ntsiab lus ntawm 0.27% thiab 0.63%, thiab siab tshaj plaws phosphorus thiab sulfur ntsiab lus ntawm 0.035%. Alloy steels muaj lwm yam kev xav tau rau cov ntsiab lus ntawm cov ntsiab lus tshwj xeeb thiab tsis raug rau cov kev txwv saum toj no.
Hardness Requirements: Lub hardness coefficient ntawm cov kav hlau yuav tsum tsis pub tshaj 72 HRB.
Tshuaj muaj pes tsawg leeg ntawm ASTM A179 Pipe
| Tshuaj muaj pes tsawg leeg | |
|---|---|
| Cov pa roj carbon,% | 0.06–0.18 |
| Manganese,% | 0.27–0.63 |
| Phosphorus, max,% | 0.035 |
| Sulfur, max,% | 0.035 |
Tensile Properties ntawm A179 yeeb nkab
| Tensile Properties | |
|---|---|
| Tensile zog, min, ksi [MPa] | 47 [325] |
| Yield zog, min, ksi [MPa] | 26 [180] |
| Elongation hauv 2 nti lossis 50 mm, min, % | 35 |
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