Propiedades
General
| Property | Value |
|---|---|
Densidad | 7.7 g/cm³ Show Supplier Material materials with Densidad of 7.7 g/cm³ |
Mecánica
| Property | Temperature | Value | Comment |
|---|---|---|---|
Charpy impact energy, V-notch | 20.0 - 25.0 J Show Supplier Material materials with Charpy impact energy, V-notch of 20.0 - 25.0 J | min., depending on the size | |
Elongación | 12.0 - 14.0 % Show Supplier Material materials with Elongación of 12.0 - 14.0 % | min., depending on the size | |
Módulo elástico | 23 °C | 215 GPa Show Supplier Material materials with Módulo elástico of 215 GPa | |
100 °C | 215 GPa Show Supplier Material materials with Módulo elástico of 215 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 |
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 | 0.0000105 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 0.0000105 1/K | 20 to 100°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 | 0.015 - 0.03 % Show Supplier Material materials with Azufre of 0.015 - 0.03 % | |
Carbono | 0.16 - 0.2 % Show Supplier Material materials with Carbono of 0.16 - 0.2 % | |
Cromo | 15.5 - 17.0 % Show Supplier Material materials with Cromo of 15.5 - 17.0 % | |
Fósforo | 0.035 Show Supplier Material materials with Fósforo of 0.035 | max. |
Manganeso | 1.0 Show Supplier Material materials with Manganeso of 1.0 | max. |
Silicona | 0.8 Show Supplier Material materials with Silicona of 0.8 | max. |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Process and energy industry, Chemical industry, Oil and petrochemical industries, Household and electrical appliance industry, Automotive and transport industry, Arms industry | |
| Corrosion properties | This alloy has excellent atmospheric corrosion resistance and is one of the standard martensitic grades best able to withstand corrosion in marine environments; only structurally hardened grades such as UGIMA® 4542 have a higher re-sistance (amongst martensitic grades). UGIMA® 4057 is also resistant to certain petroleum and organic products. Precautionary measures should be taken for certain tests such as the saline mist test (French standard NFX 41002), for example marking labels (that might cause corrosion run-outs and reduce the test resistance time) should not be used on the test pieces. In terms of pitting corrosion UGIMA® 4057 performs better than most martensiitic grades. | |
| General machinability | The performance of UGIMA® 4057 in machining is exceptionally good, as a result of the optimisation of the inclusion population. | |
| Hot forming | Forging: UGIMA® 4057 is suitable for forging. It is heated slowly to 850°C, then more quickly to 1150/1180°C for forging be-tween 1180°C and 950°C. Forging must be followed by a stress relief heat treatment at 200°C or softening at between 750 and 850°C or hardening and tempering | |
| Other | Available products: | |
Provided certain precautionary measures are taken, UGIMA® 4057 can be subjected to most arc welding or resistance welding techniques in tempered, hardened or softened condition.
To prevent any risk of cold weld cracking, UGIMA® 4057 must be preheated to between 200 and 300°C and the temper-atures between passes maintained at a minimum of 200°C. A stress relief heat treatment at 650°C is also required after welding.
If a filler metal is needed, a wire with a similar composition to that of UGIMA® 4057, such as AWS E/ER410 is recom-mended. AWS E/ER310 austenitic wire can also be used if the mechanical properties on welding and the response of the welding to the post welding heat treatment are not required to be the same as those of the base metal.
Ar + 1 to 3% CO₂ or O₂ shielding gases are recommended for MIG welding. Gas containing H₂ should not be used. Coated electrodes must be oven dried before welding.Heat treatment