Saky steensitic anaghị agba nchara bụ ụdị chromium anaghị agba nchara nke na-ejigide mitanitic martensic na ụlọ okpomọkụ, nke a ga-eji ọgwụgwọ na-eme ka ọ bụrụ ihe a na-emetụ ya. N'ikwu okwu n'ozuzu, ọ bụ ụdị igwe anaghị agba nchara. Mgbe ha mechara, na-eme ihe na ị na-eme ihe, isi ike nke steel 440 a na-akawanye mma karịa nke na-enweghị ike na steepụ na-eguzosi ike. A na-ejikarị ya emepụta ihe dị iche iche nke ịmịpụta, ma ọ bụ ebu plasting nke chọrọ ibu dị elu ma na-eyi nguzogide n'okpuru ọnọdụ corrosove. American Standard 440 usoro nchara nchara gụnyere: 440a, 440B, 440c, 440f. Carbon ọdịnaya nke 440a, 440B na 440c mụbaa nke ọma. 440F (ASTM A582) bụ ụdị ịkpụ nchara na ọdịnaya na-akwụ ụgwọ na ọdịnaya nke 440c.
Akara ule nke 440 ss
| Onye Amerika | Attm | 440a | 440B | 440C | 440f |
| Esizighi uru | S44002 | S44003 | S44004 | S44020 | |
| Kondonese | Jis | Sus 440a | Sus 440b | Ya na 440c | Sus 440f |
| Nwoke nwoke | Idide | 1.4109 | 1.4122 | 1.4125 | / |
| Chaina | GB | 7cr17 | 8cr17 | 11C17 988mo | Y11cr17 |
Ihe mejupụtara kemịkal nke 440 ss
| Akara ule | 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) |
Mara: A na-ahapụ ụkpụrụ na brackets ma ọ bụghị iwu.
Siri ike nke 440 ss
| Akara ule | Ha siri ike, nnabata (HB) | Ọgwụgwọ Ọgwụ (HRC) |
| 440a | ≤255 | ≥54 |
| 440B | ≤255 | ≥56 |
| 440C | ≤269 | ≥58 |
| 440f | ≤269 | ≥58 |
Yiri nke nkịtị nchara nchara, saky steesan 440 steel na-acha odo odo nwere njiri mara nke ike site na ijikọ ya na iji gboo, ma nwee ike nweta ọtụtụ ihe eji eme ya site na ọgwụgwọ ọkụ. Na mkpokọta, 440a nwere arụmọrụ kachasị mma na ịdị elu nke siri ike, ike ya siri ike dị elu karịa nke 440B na 440c. 440B nwere ihe siri ike na isi ike karịa 440a na 440c maka Ngwá ọrụ, ngwaọrụ na-eji ihe na-atụ ihe, na-adọrọ adọrọ na valt. 440C nwere ihe siri ike nke igwe anaghị agba nchara na igwe na-eguzogide ọgwụ maka ịkpụ ngwaọrụ dị elu, nozzles na ihe ndị na-egbu egbu. 440F bụ nchara na-egbuke egbutu ma jiri ya mee ihe na akpaka.
Oge post: Jul-07-2020