440C ahama bir guri guriwaa badeeco bir ah oo aan tayo lahayn oo tayo sare leh oo caan ku ah isku dhafka gaarka ah ee caabbinta xirashada iyo iska caabinta daxalka. Waxay ka tirsan tahay qoyska birta ah ee martensitic waxaana si weyn loogu isticmaalaa warshado kala duwan waxqabadkeeda sare.
Heerka 440C birta aan daahin iyo buundooyinka birta u dhigma
| Dalka | USA | BS & DIN | Japan |
| Heerka | ASTM A276 | EN 10088 | JIS G4303 |
| Darajooyinka | S44004/440C | X105CrMo17/1.4125 | SUS440C |
ASTM A276 440C Qalabka Kiimikada Birta iyo Wax u dhigma
| Heerka | Darajo | C | Mn | P | S | Si | Cr | Mo |
| ASTM A276 | S44004/440C | 0.95-1.20 | ≦1.00 | ≦0.04 | ≦0.03 | ≦1.00 | 16.0-18.0 | ≦0.75 |
| EN10088 | X105CrMo17/1.4125 | 0.95-1.20 | ≦1.00 | ≦0.04 | ≦0.03 | ≦1.00 | 16.0-18.0 | 0.40-0.80 |
| JIS G4303 | SUS 440C | 0.95-1.20 | ≦1.00 | ≦0.04 | ≦0.03 | ≦1.00 | 16.0-18.0 | ≦0.75 |
440C bir aan daahinMakaanikGuryaha
| Heerkulka Heerkulka (°C) | Xoogga Jilitaanka (MPa) | Xoogga Wax-soosaarka 0.2% Caddeynta (MPa) | Kordhinta (% 50mm) | Hardness Rockwell (HRC) | Saamaynta Charpy V (J) |
| la tirtiray* | 758 | 448 | 14 | 269HB ugu badnaan | - |
| 204 | 2030 | 1900kii | 4 | 59 | 9 |
| 260 | 1960kii | 1830kii | 4 | 57 | 9 |
| 306 | 1860kii | 1740kii | 4 | 56 | 9 |
| 371 | 1790kii | 1660kii | 4 | 56 | 9 |
Waa kuwan qaar ka mid ah qodobbada muhiimka ah ee lagu soo bandhigayo 440C birta fidsan ee birta ah:
1. Halabuurka: 440C birta fidsan waxay ka kooban tahay chromium (16-18%), kaarboon (0.95-1.20%), iyo xaddi yar oo walxo kale ah sida manganese, silicon, iyo molybdenum.
Xiro iska caabin ah: 440C birta fidsan ee birta ah waxay caan ku tahay iska caabbinta xidhashada aadka u wanaagsan, taas oo ka dhigaysa mid ku habboon codsiyada ku lug leh agabka xoqida, qalabka goynta, biraha, iyo qaybaha xidhashada u adkaysta.
3. Iska caabinta Daxalka: In kasta oo ay tahay bir aan kaarboon-kaarboon-sare ah, 440C waxa ay muujisaa iska caabbinta daxalka oo wanaagsan.
4. Adag iyo Xoog: 440C birta fidsan ee birta ah waxay leedahay qallafsanaan aad u fiican iyo xoog sare, oo bixisa adkeysi iyo cimri dherer codsiyada dalabaadka.
Waqtiga boostada: Jul-05-2023