Propiedades
General
| Property | Temperature | Value |
|---|---|---|
Densidad | 20 °C | 7.71 g/cm³ Show Supplier Material materials with Densidad of 7.71 g/cm³ |
100 °C | 7.69 g/cm³ Show Supplier Material materials with Densidad of 7.69 g/cm³ | |
200 °C | 7.66 g/cm³ Show Supplier Material materials with Densidad of 7.66 g/cm³ | |
300 °C | 7.64 g/cm³ Show Supplier Material materials with Densidad of 7.64 g/cm³ | |
400 °C | 7.6 g/cm³ Show Supplier Material materials with Densidad of 7.6 g/cm³ |
Mecánica
| Property | Temperature | Value | Comment |
|---|---|---|---|
Charpy impact energy, V-notch | 25 J Show Supplier Material materials with Charpy impact energy, V-notch of 25 J | min. | |
Dureza Brinell | 235.0 - 285.0 [-] Show Supplier Material materials with Dureza Brinell of 235.0 - 285.0 [-] | ||
Elongación | 14 % Show Supplier Material materials with Elongación of 14 % | min. diameter ≤ 100mm | |
Módulo elástico | 20 °C | 215 GPa Show Supplier Material materials with Módulo elástico of 215 GPa | |
100 °C | 212 GPa Show Supplier Material materials with Módulo elástico of 212 GPa | ||
200 °C | 205 GPa Show Supplier Material materials with Módulo elástico of 205 GPa | ||
300 °C | 200 GPa Show Supplier Material materials with Módulo elástico of 200 GPa | ||
400 °C | 190 GPa Show Supplier Material materials with Módulo elástico of 190 GPa | ||
Resistencia a la tracción | 800.0 - 950.0 MPa Show Supplier Material materials with Resistencia a la tracción of 800.0 - 950.0 MPa | diameter ≤ 100mm |
Aplicaciones térmicas
| Property | Value | Comment |
|---|---|---|
Calor específico | 460 J/(kg·K) Show Supplier Material materials with Calor específico of 460 J/(kg·K) | |
Coeficiente de dilatación térmica | 0.0000106 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 0.0000106 1/K | 20 to 100°C |
0.0000112 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 0.0000112 1/K | 20 to 200°C | |
0.0000117 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 0.0000117 1/K | 20 to 300°C | |
0.0000121 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 0.0000121 1/K | 20 to 400°C | |
Conductividad térmica | 25 W/(m·K) Show Supplier Material materials with Conductividad térmica of 25 W/(m·K) |
Eléctrico
| Property | Value |
|---|---|
Resistividad eléctrica | 7e-07 Ω·m Show Supplier Material materials with Resistividad eléctrica of 7e-07 Ω·m |
Chemical properties
| Property | Value | Comment |
|---|---|---|
Azufre | 0.005 Show Supplier Material materials with Azufre of 0.005 | max. |
Carbono | 0.12 - 0.2 % Show Supplier Material materials with Carbono of 0.12 - 0.2 % | |
Cobre | 0.5 Show Supplier Material materials with Cobre of 0.5 | max. |
Cromo | 15.0 - 17.0 % Show Supplier Material materials with Cromo of 15.0 - 17.0 % | |
Fósforo | 0.025 Show Supplier Material materials with Fósforo of 0.025 | max. |
Manganeso | 1.0 Show Supplier Material materials with Manganeso of 1.0 | max. |
Molibdeno | 0.30000000000000004 Show Supplier Material materials with Molibdeno of 0.30000000000000004 | max. |
Níquel | 2.0 - 3.0 % Show Supplier Material materials with Níquel of 2.0 - 3.0 % | |
Silicona | 1.0 Show Supplier Material materials with Silicona of 1.0 | max. |
Technological properties
| Property | ||
|---|---|---|
| Application areas | UGI 4057 AIR is frequently used in highly stressed parts where good corrosion resistance is important in de-sign, such as aircraft fittings, pump shafts and valve parts. It also meets the requirements of EN10272 with respect to pressure vessels. | |
| Corrosion properties | This alloy has a good atmospheric corrosion resistance and is one of the best standard martensitic grades for corrosion resistance; only structurally hardened grades such as UGIMA® 4542 have a higher resistance (among martensitic grades). It is also resistant to certain petroleum and organic products. | |
| Heat Treatment | Heat treatments carried out on UGI 4057 AIR are composed of two steps: Austenitization: Austenitization is performed in the range 950°C to 1030°C, for a dwell time of 30 min minimum. Cooling must be fast enough to avoid grain boundary precipitation that would be detrimental for toughness, but not too fast to avoid quench cracking. Oil quenching (with a moderate drasticity fluid) or air cooling can be performed depending on the size of treated parts. Tempering: Tempering conditions may vary depending on customer’s specifications. Some specifications demand a dou-ble tempering treatment (to relax fresh martensite formed after the 1st tempering) whereas other are requiring a single tempering. Thanks to its low retained austenite content after austenitization, UGI 4057 AIR can indif-ferently be tempered by double or single treatment. For the QT900, the recommended tempering treatment routes are: Annealing/softening: Full annealing is impracticable because of long cooling time required. Instead, the following semi-anneal pro-cedure can be employed: | |
| Hot forming | UGI 4057 AIR is suitable for forging. It is heated slowly to 850°C, then more quickly to 1150/1180°C for forg-ing between 1180°C and 950°C. Forging must be followed by a stress relief heat treatment at 200°C or sof-tening at between 750 and 850°C or hardening and tempering. | |
| Other | Available products: | |
| Welding | Provided certain precautionary measures are taken, UGI 4057 AIR can be subjected to most arc welding or resistance welding techniques in tempered, hardened or softened condition. | |