Show Supplier Material materials with Density of 7.7 g/cm³
Show Supplier Material materials with Hardness, Brinell of 277.0
max., to be in accordance with both ASTM A276 and A479
Coefficient of thermal expansion
Show Supplier Material materials with Coefficient of thermal expansion of 0.0000105 1/K
20 to 100°C
Specific heat capacity
Show Supplier Material materials with Specific heat capacity of 460 J/(kg·K)
Show Supplier Material materials with Thermal conductivity of 25 W/(m·K)
Show Supplier Material materials with Electrical resistivity of 7e-07 Ω·m
0.16 - 0.2 %
Show Supplier Material materials with Carbon of 0.16 - 0.2 %
15.5 - 17.0 %
Show Supplier Material materials with Chromium of 15.5 - 17.0 %
Show Supplier Material materials with Manganese of 1.0
Show Supplier Material materials with Phosphorus of 0.035
Show Supplier Material materials with Silicon of 0.8
0.015 - 0.03 %
Show Supplier Material materials with Sulfur of 0.015 - 0.03 %
Process and energy industry, Chemical industry, Oil and petrochemical industries, Household and electrical appliance industry, Automotive and transport industry, Arms industry
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.
Note: The corrosion resistance of a stainless steel depends on many factors related to the composition of the corro-sive atmosphere (chloride concentration, presence or absence of oxidising agents, temperature, pH, agitation or no agi-tation, and so on), as well as to the preparation of the material (surfaces free from metal particles, surface finish, such as hardening, polishing, and so on).
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.
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
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