Show Supplier Material materials with Density of 7.7 g/cm³
Coefficient of thermal expansion
Show Supplier Material materials with Coefficient of thermal expansion of 0.0000105 1/K
20 to 100°C
Show Supplier Material materials with Coefficient of thermal expansion of 0.000012 1/K
20 to 200°C, 20 to 300°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 26 W/(m·K)
Show Supplier Material materials with Thermal conductivity of 28.7 W/(m·K)
Show Supplier Material materials with Electrical resistivity of 6e-07 Ω·m
Show Supplier Material materials with Carbon of 0.03
10.5 - 12.5 %
Show Supplier Material materials with Chromium of 10.5 - 12.5 %
Show Supplier Material materials with Manganese of 1.0
Show Supplier Material materials with Phosphorus of 0.04
Show Supplier Material materials with Silicon of 1.0
Show Supplier Material materials with Sulfur of 0.15
Show Supplier Material materials with Titanium of 0.65
min., max: 6x(C+N)
Exhaust line parts, Mufflers hooks
Drawing or profil rolling: Like other ferritic steels, drawing UGI® 4512 is not difficult (see below the strain hardening curve of UGI® 4512 during drawing).
Cold heading: From a structural point of view, UGI® 4512 is fairly easy deformable via cold heading as most ferritic stainless steels. However, this grade is sensitive to lines of folded material on the outer surface of the wire rod formed during hot rolling. This type of defect may open during severe cold heading operations and torn up the outer surface ot the material when tensile stresses are high.
Forming and folding: Due to its structure, UGI® 4512 is well adapted to cold forming or folding work on both drawn wires and drawn bars.
UGI® 4512 provides a good corrosion resistance in mildly aggressive environnements.
UGI® 4512 has a high destructive scaling temperature thus exhibiting good scaling resistance in both contin-uous and intermittent service up to 800°C. Its weight loss when exposed for 100 h at 800°C is lower than 10 mg/cm², thus corrosion resistance of UGI® 4512 at such temperature is much better than alloyed car-bon steel.
UGI® 4512 shows good corrosion resistance specially towards acidic condensates found in both gasoline or diesel exhaust lines.
As many ferritic stainless steels, UGI® 4512 is not sensitive to stress corrosion cracking mechanisms.
A softening thermal treatment can be done in a temperature range from 800 to 850° followed by air cool-ing.This thermal treament transforms martensite formed during forging (or rolling) in parts where the structure is mainly ferritic containing precipitates of carbon, nitrogen and titanium. This ferritic structure ex-hibits a much better cold forming behavior than a structure containing both martensite and ferrite phases.
UGI® 4512 has a dual phase structure at high temperature (ferrite and austenite). It’s forging properties are then not as good as ferritic grades which exhibit 100% ferrite phase at high temperature. Forging proper-ties of UGI® 4512 remain however acceptable.
UGI® 4512 can be forged between 950 and 1200°C followed by a softening thermal treatment (see Thermal treatment paragraph) on forged parts to avoid generation of martensite phases during forging.
Other options: contact the supplier
UGI® 4512 has a good weldability. In order to avoid grain growth in the thermal affected zone, welding at high energies should be avoided.
UGI® 4512 is generally welded with argon as protective gas or a mix argon + helium. Addition of hydrogen or nitrogen in the mix of protective gases should be prohibited as it lowers ductility of welded areas.
Usage of CO₂ should not exceed 3% in the mix of protective gases for the same reasons.
Welded areas should be descaled mechanically or chemically and passivated afterwards.