Hana ʻo Saky Steel i 440 series hardenable martensitic stainless steel sheets & plates 440A, 440B, 440C
AISI 440A, UNS S44002, JIS SUS440A, W.-nr. 1.4109 ( DIN X70CrMo15 ) nā ʻili kila kuhili ʻole, nā papa, nā pā
AISI 440B, UNS S44003, JIS SUS440B, W.-nr. 1.4112 ( DIN X90CrMoV18 ) nā ʻili kila kila, nā papa, nā pā
AISI 440C, UNS S44004, JIS SUS440C, W.-nr. 1.4125 ( DIN X105CrMo17 ) nā ʻili kila kila, nā papa, nā pā
440A 440B 440C mea kemika:
| Papa | 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 |
Ua hoʻonui ʻia ka ʻike kalapona a me ka paʻakikī o 440A-440B-440C mai ABC (A-0.75%, B-0.9%, C-1.2%). ʻO ka 440C he kila kila kila maikaʻi loa me ka paʻakikī o 56-58 RC. ʻO kēia mau kila ʻekolu he kūpaʻa maikaʻi i ka ʻōpala, ʻo 440A ka mea maikaʻi loa, a ʻo 440C ka haʻahaʻa. He mea maʻamau ka 440C. Hōʻike ʻia ka hui kemika o ke kila kila martensitic e ka hoʻohui ʻana o nā mea e like me ka molybdenum, tungsten, vanadium, a me ka niobium e pili ana i ka hui ʻana o nā ʻāpana like ʻole o 0.1% -1.0% C a me 12% -27% Cr. No ka mea, ʻo ke ʻano o ka ʻiʻo he ʻano cubic i hoʻokumu ʻia i ke kino, hāʻule ka ikaika i nā wela kiʻekiʻe. Ma lalo o 600 ° C, ʻo ka ikaika wela kiʻekiʻe ka mea kiʻekiʻe loa ma waena o nā ʻano kila kila a pau, a ʻo ka ikaika kolo ka mea kiʻekiʻe loa. Loaʻa iā 440A nā waiwai kinai a me ka paʻakikī a me ka paʻakikī kiʻekiʻe. ʻOi aku ka paʻakikī ma mua o ke kila 440B a me ke kila 440C. Hoʻohana ʻia ʻo 440B no ka ʻoki ʻana i nā mea hana, ana i nā mea hana, nā bearings a me nā kiwi. ʻOi aku ka paʻakikī ma mua o ke kila 440A a ʻoi aku ka paʻakikī ma mua o ke kila 440C. ʻO ka 440C ka paʻakikī kiʻekiʻe loa o nā kila kila a me nā kila wela a hoʻohana ʻia no nā nozzles a me nā bearings. ʻO 440F kahi kila kila e hoʻomaikaʻi i nā waiwai ʻoki maʻalahi o ke kila 440C no nā lathe maʻalahi.
Ka manawa hoʻouna: ʻAukake-17-2018