Acciai per estrusione a freddo
Gli acciai per estrusione a freddo sono materiali per costruzione meccanica progettati per essere trasformati in componenti mediante formatura ed estrusione a freddo. Combinano la duttilità necessaria per una sostanziale deformazione plastica con la resistenza e la tenacità richieste da elementi di collegamento formati a freddo, componenti automobilistici e altri componenti di precisione.
| Qualità | N. materiale | C | P | S | Mn | Si | Cr |
|---|---|---|---|---|---|---|---|
| SWCH10K | — | — | — | — | — | — | — |
| SWRCH12K | — | 0.1 - 0.15 | max 0.03 | max 0.035 | 0.3 - 0.6 | 0.1 - 0.35 | max 0.2 |
| SCM440HRCH | — | 0.37 - 0.44 | max 0.03 | max 0.03 | 0.55 - 0.95 | 0.15 - 0.35 | 0.85 - 1.25 |
| SWCHB620 | — | 0.17 - 0.23 | max 0.03 | max 0.03 | 1.1 - 1.4 | 0.1 - 0.35 | — |
| SWCH17K | — | — | — | — | — | — | — |
| SWRCH18K | — | 0.15 - 0.2 | max 0.03 | max 0.035 | 0.6 - 0.9 | 0.1 - 0.35 | max 0.2 |
| SCM822HRCH | — | 0.19 - 0.25 | max 0.03 | max 0.03 | 0.55 - 0.95 | 0.15 - 0.35 | 0.85 - 1.25 |
| SMn420RCH | — | 0.17 - 0.23 | max 0.03 | max 0.03 | 1.2 - 1.5 | 0.15 - 0.35 | max 0.35 |
| SWCH24K | — | — | — | — | — | — | — |
| SWRCH25K | — | 0.22 - 0.28 | max 0.03 | max 0.035 | 0.3 - 0.6 | 0.1 - 0.35 | max 0.2 |
| SNC631HRCH | — | 0.26 - 0.35 | max 0.03 | max 0.03 | 0.3 - 0.7 | 0.15 - 0.35 | 0.55 - 1.05 |
| SMn438RCH | — | 0.35 - 0.41 | max 0.03 | max 0.03 | 1.35 - 1.65 | 0.15 - 0.35 | max 0.35 |
| SWCH33K | — | — | — | — | — | — | — |
| SWRCH35K | — | 0.32 - 0.38 | max 0.03 | max 0.035 | 0.6 - 0.9 | 0.1 - 0.35 | max 0.2 |
| SNCM220HRCH | — | 0.17 - 0.23 | max 0.03 | max 0.03 | 0.6 - 0.95 | 0.15 - 0.35 | 0.35 - 0.65 |
| SMnC420RCH | — | 0.17 - 0.23 | max 0.03 | max 0.03 | 1.2 - 1.5 | 0.15 - 0.35 | 0.35 - 0.7 |
| SWCH41K | — | — | — | — | — | — | — |
| SWRCH43K | — | 0.4 - 0.46 | max 0.03 | max 0.035 | 0.6 - 0.9 | 0.1 - 0.35 | max 0.2 |
| SNCM439RCH | — | 0.36 - 0.43 | max 0.03 | max 0.03 | 0.6 - 0.9 | 0.15 - 0.35 | 0.6 - 1 |
| SCr420RCH | — | 0.18 - 0.23 | max 0.03 | max 0.03 | 0.6 - 0.9 | 0.15 - 0.35 | 0.9 - 1.2 |
| SWCH50K | — | — | — | — | — | — | — |
| SWRCHB223 | — | 0.2 - 0.26 | max 0.03 | max 0.03 | 0.6 - 0.9 | 0.1 - 0.35 | — |
| SWCH8R | — | — | — | — | — | — | — |
| SWRCH8R | — | max 0.1 | max 0.04 | max 0.04 | max 0.6 | — | max 0.2 |
| SCr435RCH | — | 0.33 - 0.38 | max 0.03 | max 0.03 | 0.6 - 0.9 | 0.15 - 0.35 | 0.9 - 1.2 |
| SWRCHB323 | — | 0.2 - 0.26 | max 0.03 | max 0.03 | 0.7 - 1 | 0.1 - 0.35 | — |
| SWCH15R | — | — | — | — | — | — | — |
| SWRCH15R | — | 0.13 - 0.18 | max 0.04 | max 0.04 | 0.3 - 0.6 | — | max 0.2 |
| SCr440HRCH | — | 0.37 - 0.44 | max 0.03 | max 0.03 | 0.55 - 0.95 | 0.15 - 0.35 | 0.85 - 1.25 |
| SWRCHB526 | — | 0.23 - 0.29 | max 0.03 | max 0.03 | 0.9 - 1.2 | 0.1 - 0.35 | — |
| SWCH10A | — | — | — | — | — | — | — |
| SWRCH10A | — | 0.08 - 0.13 | max 0.03 | max 0.035 | 0.3 - 0.6 | max 0.1 | max 0.2 |
| SCM418HRCH | — | 0.15 - 0.21 | max 0.03 | max 0.03 | 0.55 - 0.95 | 0.15 - 0.35 | 0.85 - 1.25 |
| SWRCHB734 | — | 0.31 - 0.37 | max 0.03 | max 0.03 | 1.2 - 1.5 | 0.1 - 0.35 | — |
| SWCH18A | — | — | — | — | — | — | — |
| SWRCH19A | — | 0.15 - 0.2 | max 0.03 | max 0.035 | 0.7 - 1 | max 0.1 | max 0.2 |
| SCM425HRCH | — | 0.23 - 0.28 | max 0.03 | max 0.03 | 0.55 - 0.95 | 0.15 - 0.35 | 0.85 - 1.25 |
| SWCHB323 | — | 0.2 - 0.26 | max 0.03 | max 0.03 | 0.7 - 1 | 0.1 - 0.35 | — |
| SWCH25A | — | — | — | — | — | — | — |
| SWRCH10K | — | 0.08 - 0.13 | max 0.03 | max 0.035 | 0.3 - 0.6 | 0.1 - 0.35 | max 0.2 |
| SCM440RCH | — | 0.38 - 0.43 | max 0.03 | max 0.03 | 0.6 - 0.9 | 0.15 - 0.35 | 0.9 - 1.2 |
| SWCHB526 | — | 0.23 - 0.29 | max 0.03 | max 0.03 | 0.9 - 1.2 | 0.1 - 0.35 | — |
| SWCH16K | — | — | — | — | — | — | — |
| SWRCH17K | — | 0.15 - 0.2 | max 0.03 | max 0.035 | 0.3 - 0.6 | 0.1 - 0.35 | max 0.2 |
| SCM822RCH | — | 0.2 - 0.25 | max 0.03 | max 0.03 | 0.6 - 0.9 | 0.15 - 0.35 | 0.9 - 1.2 |
| SWCHB734 | — | 0.31 - 0.37 | max 0.03 | max 0.03 | 1.2 - 1.5 | 0.1 - 0.35 | — |
| SWCH22K | — | — | — | — | — | — | — |
| SWRCH24K | — | 0.19 - 0.25 | max 0.03 | max 0.035 | 1.35 - 1.65 | 0.1 - 0.35 | max 0.2 |
| SNC631RCH | — | 0.27 - 0.35 | max 0.03 | max 0.03 | 0.35 - 0.65 | 0.15 - 0.35 | 0.6 - 1 |
| SMn433HRCH | — | 0.29 - 0.36 | max 0.03 | max 0.03 | 1.15 - 1.55 | 0.15 - 0.35 | max 0.35 |
Norme che coprono questa categoria
8Intervalli delle proprietà
18| Proprietà | Unità | Min | Max | Qualità |
|---|---|---|---|---|
| Rm | N/mm² | 290 | 1076 | 48 |
| Re | N/mm² | 225 | 958 | 4 |
| A | % | 17 | 30 | 3 |
| A5 | % | 6 | 30 | 4 |
| Z | % | 30 | 55 | 48 |
| KCU | kJ/m² | 150 | 400 | 1 |
| HB | — | 121 | 255 | 3 |
| HRB | — | 80 | 97 | 37 |
| rho | g/cm³ | 7.549 | 7.9 | 6 |
| E | GPa | 152 | 217 | 4 |
| alpha | 10^-6/K | 11.9 | 15.3 | 3 |
| lambda | W/(m·K) | 26 | 56.1 | 4 |
| cp | J/(kg·K) | 465 | 720 | 3 |
| rho_el | nΩ·m | 233 | 1156 | 2 |
| Ac1 | °C | 730 | 810 | 4 |
| Ac3 | °C | 755 | 950 | 4 |
| Ar3 | °C | 690 | 840 | 4 |
| Ar1 | °C | 680 | 780 | 4 |
Ricavato da 48 qualità di questa categoria con un valore registrato.
Intervallo di composizione
11| Proprietà | Unità | Min | Max | Qualità |
|---|---|---|---|---|
| B | % | 0.0008 | 0.0008 | 24 |
| C | % | 0.08 | 0.53 | 118 |
| Al | % | 0.02 | 0.02 | 10 |
| Si | % | 0.1 | 0.4 | 112 |
| P | % | 0.025 | 0.04 | 118 |
| S | % | 0.025 | 0.04 | 118 |
| Cr | % | 0.2 | 1.8 | 90 |
| Mn | % | 0.3 | 1.7 | 118 |
| Ni | % | 0.2 | 3.5 | 88 |
| Cu | % | 0.25 | 0.3 | 92 |
| Mo | % | 0.15 | 0.6 | 25 |
Ricavato da 118 qualità di questa categoria con un valore registrato.