Show Supplier Material materials with Density of 7.7 g/cm³
Show Supplier Material materials with Elastic modulus of 200 GPa
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Show Supplier Material materials with Tensile strength of 1100
max., diameter ≤ 160mm
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 0.0000109 1/K
20 to 200°C
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20 to 300°C
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20 to 400°C
Specific heat capacity
Show Supplier Material materials with Specific heat capacity of 430 J/(kg·K)
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Show Supplier Material materials with Carbon of 0.05
12.0 - 14.0 %
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Show Supplier Material materials with Manganese of 1.5
0.30000000000000004 - 0.7000000000000001 %
Show Supplier Material materials with Molybdenum of 0.30000000000000004 - 0.7000000000000001 %
3.5 - 4.5 %
Show Supplier Material materials with Nickel of 3.5 - 4.5 %
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UGI® 4313 is intended for the following applications (non-exhaustive list):
Wire drawing – Shaping: UGI® 4313 is suitable for cold working by conventional methods.
Localized pitting corrosion: The resistance to localized pitting corrosion largely depends on the composition of the grade; calculation of the PREN pitting index (=%Cr + 3.3x%Mo +16x%N) gives us an indication of the pitting corrosion resistance. With a calculated average PREN of 15, UGI® 4313 has a better corrosion resistance than that of the AISI 420 series (1.4034; average calculated PREN of 13.5); but it remains less satisfactory than that of the AISI 431 series (1.4057; average calculated PREN of 17).
The pitting corrosion resistance of UGI® 4313 is therefore satisfactory in moderately aggressive environments, i.e. containing less than 100 ppm of chloride ions. It is improved with a surface condition having low roughness, obtained for example by electropolishing.
UGI® 4313 can be machined both in annealed condition (A) and in quenched and tempered conditions (QT). The annealed condition, due to its low mechanical properties, is more subject to chip sticking to the tools, which could accelerate tool wear and adversely affect post-machining surface conditions. The quenched and tempered conditions (QT) cause tool wear that is all the faster when they have high mechanical properties. Accordingly, the QT700 condition has the best machinability of the 4 available conditions.
The machinability of UGI® 4313 is similar to that of nickel-containing martensitic grade of the UGI® 4418 type. Our technical support department is at your disposal for any requests on the subject.
Annealing: Annealing between 600°C and 650°C with cooling in air or in furnace, to be performed after martensitic transformation.
Quenching: Quenching should be performed maintaining a temperature in a range between 900°C and 1150°C followed by cooling in air or in oil.
Tempering : The choice of the post-quenching tempering temperature depends on the required mechanical properties. The temperatures recommended by EN 10088-3 are:
Heating to between 1150°C and 1200°C is recommended. Hot working (forging) of UGI® 4313 should preferably be performed in the temperature range between 1200°C and 900°C and be followed by air cooling. The behaviour of the UGI® 4313 grade during forging is similar to that of a 1.4301 type austenitic grade.
After hot working, a complete heat treatment, consisting of austenitizing and quenching and then tempering, is recommended.
Other options: contact the supplier
UGI® 4313 can be welded by arc welding processes (GMAW, GTAW, SMAW, etc.) and by most other processes (spot, seam, laser, etc.). Thanks to its low carbon content and the nickel that it contains, UGI® 4313 is easier to weld than most martensitic stainless steels.
The martensite, poor in carbon, combined with the finely dispersed residual austenite, confers on the heat affected zones (HAZ) of UGI® 4313 good impact strength in the as-welded condition. UGI® 4313 is therefore relatively insensitive to cold cracking and preheating of the parts is normally not required, unless you have to weld very thick parts or parts having a shape that could engender high post-cooling weld stress concentrations (in such cases, preheating is recommended between 100°C and 200°C).
For welding with a filler, if the Weld Metal (WM) does not require mechanical properties on a par with those of UGI® 4313, it is possible to use as filler wire an austenitic grade such as UGIWELDTM 316LM. In that case a post-welding heat treatment is generally not necessary.
If the WM has to ensure mechanical properties identical to those of UGI® 4313, a homogeneous filler wire can be used. In that case, a post-welding tempering heat treatment at 540-580°C is recommended. In MIG welding with homogeneous filler wire, choose a relatively non-oxidizing protective gas such as Ar + 1-2% CO₂ to avoid an excessively high rate of oxygen in the WM, thus ensuring good impact strength for these WMs.