Saky karfe suna samar da jerin 440 na Harshen Martensitic bakin karfe Shiryawa & PRESTES 440A, 440B, 440B, 440B
Aisi 440a, unp4, Jis Saus440a, W.-nr. 1.4109 (Din x70crmo15) zanen karfe, faranti, flats
AISI 440B, un4003, Jis Sus440B, W.-nr. 1.4112 (Din x90crmov18) zanen karfe, faranti, flats
AISI 440C, uns un44, Jis Sus44C, W.-LR. 1.4125 (Din X105CMO17) zanen karfe, faranti, flats
440A 440B 440B na kayan sunadarai:
| Sa | 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 |
Abun Carbon da Harshen 440a-440B-440C ya karu tsakanin ABC (A-0.75%, B-0.9%, C-1.2%, C-1.2%, C-1.2%, C-1.2%, C-1.2%). 440C babban bakin karfe ne mai kyau tare da wahalar 56-58 RC. Wadannan ƙarfe uku suna da kyawawan juriya, 440a shine mafi kyau, kuma 440C shine mafi ƙasƙanci. 440C ya zama ruwan dare gama gari. Abubuwan sunadarai na Martensitic bakin karfe an san shi da ƙari na abubuwan da aka gyara kamar na 0.1% -1.0% c da 12% -27% cr cr. Tunda tsarin nama ne mai cike da tsari na jiki, ƙarfin saukad da ƙarfi a yanayin zafi. A ƙasa 600 ° C, ƙarfin zafin jiki mai ƙarfi shine mafi girma tsakanin kowane nau'in ƙarfe bakin karfe, da ƙarfin CEP ɗin shima mafi girma. 440A tana da kyakkyawar quqi da kaddaraka da ƙarfi. Yana da tauri mafi girma fiye da 440B karfe da 440C karfe. An yi amfani da 440b don kayan kayan lambu, masu auna kayan aiki, beginging da bawuloli. Yana da mafi girman ƙarfi fiye da 440a da tauri sama da 440C karfe. 440C yana da mafi girman wuya ga duk bakin karfe da zafi-resistant karfe kuma ana amfani da shi don nozzles da kuma ɗaukar kaya. 440F wani ƙarfe ne na ƙarfe wanda ke inganta abubuwan da ke cikin sauƙi na 440C karfe don atomatik na atomatik.
Lokaci: Aug-17-2018