304/304L Kowiri tira Tube Paipa
Whakaahuatanga
ASTM A312 ASTM A269 ASME SA 213 / ASTM A213 TP304, EN 10216-5 1.4301 kowiri tira he rerekētanga o te 18% chromium - 8% nickel austeniticstainless ngongo maitai, te koranu tino waia me te tino whakamahia i roto i te whanau kowiri tira.Ka whakaarohia tenei kowiri tira mo te maha o nga momo tono mo te pai o te waikura, te hanga ngawari, te ahua pai, me te kaha nui me te taumaha iti.
304 Kowiri tira ko te paerewa "18/8" kowiri tira;he kowiri tira tino whai kiko me te tino whakamahia, e waatea ana i roto i te whānuitanga o nga hua, ahua me te whakaoti atu i era atu.He tino pai te hanga me nga ahuatanga whakaahuru.Ko te hanganga austenitic taurite o te Koeke 304 ka taea te unu hohonu me te kore he whakahiatotanga takawaenga, na te mea i tino rangatira ai tenei reanga i roto i te hanga i tetahi waahanga kowiri tira penei i te totohu, te hollow-ware me te ipu.Mo enei tono he mea noa ki te whakamahi i nga momo rereke "304DDQ" (Deep Drawing Quality).
Ko te karaehe 304 ka pakaru noa, ka hurihia ranei ki roto i nga momo waahanga hei tono i roto i nga mara ahumahi, hoahoanga, me te kawe waka.Ko te karaehe 304 he tino pai te ahua o te whakapiri.Karekau e hiahiatia te whakaene i muri i te wea i te wa e whiria ana nga waahanga kikokore.
Ko te karaehe 304L, te putanga waro iti o te 304, karekau e hiahia ki te whakahiato i muri i te paihere, no reira ka whakamahia nuitia i roto i te waahanga taumaha (neke atu i te 6mm).Ko te karaehe 304H me ona ihirangi waro teitei ka kitea te tono i te pāmahana teitei.Ko te hanganga austenitic ka hoatu i enei tohu te tino pakari, tae noa ki te pāmahana cryogenic.
Kōeke | Kōeke | Wae matū % | ||||||||||
C | Cr | Ni | Mn | P | S | Mo | Si | Cu | N | Ētahi atu | ||
304 | 1.4301 | ≤0.08 | 18.00-19.00 | 8.00-10.00 | ≤2.00 | ≤0.045 | ≤0.030 | - | ≤1.00 | - | - | - |
304L | 1.4307 | ≤0.030 | 18.00-20.00 | 8.00-10.00 | ≤2.00 | ≤0.045 | ≤0.030 | - | ≤1.00 | - | - | - |
304H | 1.4948 | 0.04-0.10 | 18.00-20.00 | 8.00-10.00 | ≤2.00 | ≤0.045 | ≤0.030 | - | ≤1.00 | - | - | - |