| Riail | grád cruach | ||||||
|---|---|---|---|---|---|---|---|
| Comhdhéanamh ceimiceach | |||||||
| C: | Sea: | Mn: | C: | S: | Cr: | ceachtar: | cu: |
| PN | 16HG | ||||||
| 0.14-0.19 | 0.17-0.37 | 1.0-1.3 | <0.035 | <0.035 | 0.8-1.1 | <0.3 | - |
| ISO/GA | 16MnCr5/1.7131 | ||||||
| 0.14-0.19 | <0.4 | 1.0-1.3 | <0.025 | <0.035 | 0.8-1.1 | - | - |
| ISO/GA | 16MnCrS5/1.7139 | ||||||
| 0.13-0.19 | 0.15-0.40 | 1.0-1.3 | <0.035 | 0.02-0.04 | 0.8-1.1 | - | - |
| GOST | 18ChG | ||||||
| 0.15-0.21 | 0.17-0.37 | 0.9-1.2 | <0.035 | <0.035 | 0.9-1.2 | <0.3 | <0.3 |
| AFNOR | 16MC5 | ||||||
| 0.17-0.23 | 0.17-0.37 | 0.8-1.1 | <0.035 | <0.035 | 1.0-1.3 | - | 0.04-0.10 |
| ASTM | UNS G51150 | ||||||
| 0.13-0.18 | 0.15-0.35 | 0.7-0.9 | <0.035 | <0.040 | 0.7-0.9 | - | - |
| PN | 20HG | ||||||
| 0.17-0.22 | 0.17-0.37 | 1.1-1.4 | <0.035 | <0.035 | 1.0-1.3 | <0.3 | - |
| ISO/GA | 20MnCr5/1.7147 | ||||||
| 0.17-0.22 | 0.15-0.40 | 1.1-1.4 | <0.025 | <0.035 | 1.0-1.3 | - | <0.4 |
| ISO/GA | 20MnCrS5/1.7149 | ||||||
| 0.17-0.22 | <0.40 | 1.1-1.4 | <0.025 | 0.02-0.04 | 1.0-1.3 | - | - |
| ISO | 21MnCr5 - 1.2162 | ||||||
| 0.18-0.24 | 0.15-0.35 | 1.1-1.4 | <0.030 | <0.030 | 1.0-1.3 | - | - |
| ASTM | UNS G51200 | ||||||
| 0.17-0.22 | 0.15-0.35 | 0.7-0.9 | <0.035 | <0.040 | 0.7-0.9 | - | - |
| N.F. | 20MC5 | ||||||
| 0.17-0.22 | <0.4 | 1.1-1.4 | <0.025 | <0.035 | 1.0-1.3 | - | - |
16HG, 16MnCr5, 1.7131, 20HG, 20MnCr5, 1.7147 - tuairisc
Cruach atá deartha do chodanna suas le 30 mm ar trastomhas agus a bhíonn faoi réir strusanna ísle agus scríobadh, mar shampla: camshafts, bioráin, giaranna níos lú, fearsaidí, toir agus giaranna ag feidhmiú ar ardluas. Cruach infheicthe, meaisínithe agus inghearrtha. Is féidir é a tháthú roimh carburizing.
Tá an t-ábhar ar fáil freisin le cion sulfair níos airde: 16MnCrS5, 1.7139 agus 20MnCrS5, 1.7149.
Aicmítear an chéad choibhéis eile mar chruach uirlise ardcharbóin - 21MnCr5, 1.2162.
Airíonna fisiceacha agus meicniúla
| Airíonna | Céim | |||||
|---|---|---|---|---|---|---|
| PN | ISO | PN | ISO | N.F. | ||
| 16HG | 16MnCr5 | 20HG | 20MnCr5 | 20MC5 | ||
| Friotaíocht creep: | RM | >590MPa | >600MPa | >740MPa | >670MPa | >850MPa |
| Neart teanntachta: | RM | >830MPa | 880-1230MPa | >1080MPa | 1000-1350MPa | 1200-1550MPa |
| Fadú: | A5 | 12% | 9% | 7% | 8% | 7% |
| Luach Tionchair KCU, 20 céim | KCU2 J/cm2 | 80 J/cm2 | - | - | KU 20J | KCU 35 |
| Cruas tar éis faghartha: | H.B. | < 187 HB | < 207 HB | < 217 HB | < 217 HB | - |
Airíonna meicniúla sreanga 16MnCr5 nuair a bhíonn siad sféaróideach agus fuartharraingthe (+AC+C)
Trastomhas D: 5-10mm
Neart teanntachta Rm: < 660 MPa
Z céatadán laghdaithe achair: > 59%.
Trastomhas D: 10-40 mm Neart teanntachta Rm: < 650 MPa Céatadán laghdú ar limistéar Z: > 59%.
Airíonna meicniúla sreanga 16MnCr5 nuair a bhíonn siad sféaróideach, tarraingthe fuar agus pas tríd an gcraiceann (+AC+C+LC)
Trastomhas D: 2-5mm
Neart teanntachta Rm: < 590 MPa
Z céatadán laghdaithe achair: > 62%.
Trastomhas D: 5-40mm
Neart teanntachta Rm: < 570 MPa
céatadán laghdaithe limistéir Z: > 62%
Airíonna meicniúla leatháin 16MnCr5 nuair a bhíonn siad spheroidized, fuar tharraingt agus a rith tríd an gcraiceann (+ A + LC)
Neart teanntachta Rm: < 550 MPa
Fadú: > 21%
Cruas < 84 HRB
Airíonna meicniúla 16MnCr5, barraí 16MnCrS5
+A - Cruas: < 207 HBW
+TH - Cruas: 156-207 HBW
+FP - Cruas: 140-187 HBW
+N - Cruas: 138-187 HBW
Airíonna meicniúla feadáin 16MnCr5
+A - Cruas: 207 HB
+TH - Cruas: 156-207 HB
+FP - Cruas: 140-187 HB
Airíonna meicniúla barraí 20MnCr5, 20MnCrS5
+A - Cruas < 217 HBW
+TH - Cruas: 170-217 HBW
+FP - Cruas: 152-201 HBW
+N - Cruas: 140-201 HBW
+S - Cruas: < 255 HBW
Airíonna meicniúla 21MnCr5
+A - HB:<217
+A+C - HB:<237
+QT - HRC superficial >60
| Cóireáil | Céim | |||||
|---|---|---|---|---|---|---|
| PN | ISO | PN | ISO | N.F. | ||
| 16HG | 16MnCr5 | 20HG | 20MnCr5 | 20MC5 | ||
| Tempered | teocht | 860 céim | 860-900 céim | 880 céim | 860-900 céim | 850-880 céim |
| Fuarú | ola | - | ola | - | ola | |
| Tempered | teocht | 180 céim | 150-200 céim | 180 céim | 150-200 céim | 150-200 céim |
| Fuarú | aer, ola | - | aer, ola | - | - | |
Soláthraímid an cóimhiotal cruach seo mar
Barraí, stiallacha agus cornaí Slata Sreanga Plátaí
