Saky Steel gaosia 440 fa'asologa fa'amalo matensitic u'amea ie u'amea & ipu 440A, 440B, 440C
AISI 440A, UNS S44002, JIS SUS440A, W.-nr.1.4109 (DIN X70CrMo15) ie uamea uamea, ipu, mafolafola
AISI 440B, UNS S44003, JIS SUS440B, W.-nr.1.4112 ( DIN X90CrMoV18 ) ie uamea uamea, ipu, mafolafola
AISI 440C, UNS S44004, JIS SUS440C, W.-nr.1.4125 ( DIN X105CrMo17 ) ie uamea u'amea, ipu, mafolafola
440A 440B 440C vaega vailaʻau:
| Vasega | C | Si | Mn | S | P | Cr | Ni | Mo |
| 440A | 0.60~0.75 | ≤1 | ≤1 | ≤0.030 | ≤0.040 | 16.00–18.00 | - | ≤0.75 |
| 440B | 0.85～0.95 | ≤1 | ≤1 | ≤0.030 | ≤0.035 | 16.00–18.00 | ≤0.60 | ≤0.75 |
| 440C | 0.95 – 1.20 | ≤1 | ≤1 | ≤0.030 | ≤0.040 | 16.00–18.00 | - | ≤0.75 |
O le kaponi i totonu ma le maaa o le 440A-440B-440C na faʻatupuina faʻasolosolo mai ABC (A-0.75%, B-0.9%, C-1.2%).O le 440C o se u'amea sili ona maualuga maualuga ma le maaa o le 56-58 RC.O nei u'amea e tolu e lelei le tete'e o le ele, 440A o le sili, ma le 440C o le maualalo.Ole 440C e masani lava.O le vailaʻau vailaʻau o le martensitic stainless steel o loʻo faʻaalia i le faʻaopoopoga o elemene e pei o le molybdenum, tungsten, vanadium, ma le niobium e faʻavae i luga o se tuufaatasiga o vaega eseese o le 0.1% -1.0% C ma le 12% -27% Cr.Talu ai ona o le fausaga o le tino o se fausaga kupita e totonugalemu i le tino, o le malosi e pa'ū malosi i le maualuga o le vevela.I lalo ifo o le 600 ° C, o le maualuga o le vevela malosi e sili ona maualuga i ituaiga uma o uʻamea uʻamea, ma o le malosi o le fetolofi e sili ona maualuga.440A e sili ona tineia ma faʻamaʻaina meatotino ma maualuga maʻaʻa.E maualuga atu le malosi nai lo le 440B sila ma le 440C sila.440B o loʻo faʻaaogaina mo meafaigaluega tipi, fuaina o meafaigaluega, paʻu ma valve.E maualuga atu le maaa nai lo le 440A sila ma maualuga atu le malosi nai lo le 440C sila.O le 440C o lo'o i ai le maaa sili ona maualuga o u'amea u'amea uma ma u'amea fa'afefeteina ma e fa'aaogaina mo pusi ma bearings.440F o se u'amea u'amea e fa'aleleia ai mea faigofie-otiina o 440C sila mo lathes otometi.
Taimi meli: Aukuso-17-2018