Saky steelsinic steelsinic steelsication waa nooc ka mid ah chromium-ka birta balaaran ee birta ah kaas oo sicir barar micronsitrather-ka heerkulka qolka, oo hantida lagu hagaajin karo daaweynta kuleylka (burburka iyo xanaaqa). Guud ahaan marka la hadlayo, waa nooc ka mid ah bir bir adag oo la cuni karo. Ka dib markii la demiyey, hanaanka xanaaqa iyo wareejinta, adkaanta birta aad u jajaban ee 440-ka ah ayaa si weyn loo hagaajiyey sidii kuwa kale ee loo yaqaan 'stevels kale'. Waxaa caadi ahaan loo adeegsadaa soo saarista qaadista, goynta aaladaha, ama waraaqaha caaga ah ee u baahan xamuul sareeya oo ay xidhaan caabbinta xaaladaha dabka leh. Heerka Mareykanka ee 440 oo taxane ah oo bir ah oo birta ah oo ay ku jiraan: 440A, 440b, 440C, 440F. Kaarboodka kaarboon ee 440a, 440b iyo 440c ayaa si isdaba joog ah u kordhay. 440F (ASTM A582) waa nooc ka mid ah birta goynta bilaashka ah oo lagu daray iyadoo lagu saleynayo 440c.
Fasalada u dhiganta ee 440 Ss
| Nin mareykan ah | ASTM | 440A | 440b | 440c | 440f |
| Aan ammaan lahayn | S44002 | S44003 | S44004 | S44020 | |
| Jabbaan | Jalis | Sus 440a | Sus 440b | Sus 440c | Xuub 440f |
| Jarmalka | Biyo haro | 1.4109 | 1.4122 | 1.4125 | / |
| Maacuun | GB | 7cr17 | 8cr17 | 11cr17 9cr18mo | Y11cr17 |
Iskuxirka kiimikada ee 440 ss
| Dhibcaha | C | Si | Mn | P | S | Cr | Mo | Cu | Ni |
| 440A | 0.6-0.75 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440b | 0.75-0.95 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440c | 0.95-1.2 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440f | 0.95-1.2 | ≤1.00 | ≤1.25 | ≤0.06 | 0.15 | 16.0-18.0 | / | (≤0.6) | (≤0.5) |
Xusuusin: Qiyamka ku jira biraha waa la oggol yahay oo aan qasab ahayn.
Adkaanta 440 ss
| Dhibcaha | Adkaanta, qarimada (HB) | Daaweynta kuleylka (HRC) |
| 440A | ≤255 | ≥54 |
| 440b | ≤255 | ≥56 |
| 440c | ≤269 | ≥58 |
| 440f | ≤269 | ≥58 |
Waxay la mid yihiin birta aler-ka caadiga ah ee 'Saky Steel Steel' ee 440-ka Guud ahaan, 440ta waxay leedahay wax qabad adag oo adag iyo adkeyn dheer, oo adagna way ka sarreysaa tan 440b iyo 440C. 440b waxay leedahay adkeyn sare iyo adkeyn ka badan 440a iyo 440c Goynta aaladaha, cabbiraadda aaladaha, waxyaabaha iyo tuubooyinka. 440C waxay leedahay adkaanta ugu sarreysa ee dhammaan birta la jajabiyey iyo kuleylka ugu adkaysata ee aaladaha goynta tayada sare leh, nozzles iyo sida loo yaqaan. 440F waa bir-goyn bilaash ah oo inta badan loo isticmaalo maadada otomatiga ah.
Waqtiga Post: Jul-07-2020