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Permodur 4828

Alternative and trade names
1.4828, Ferrotherm 4828
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Description

1.4828 / Ferrotherm 4828 is a standard steel grade used for the fabrication of furnace furniture and other high temperature components. Compared with Ferrotherm 4878 and 4713, Ferrotherm 4828 exhibits superior resistance to scaling. Due to its high tensile strength at elevated temperatures, compared with other grades, Ferrotherm 4828 is ideally suited for applications where a greater emphasis is placed on mechanical property requirements.

Properties

Mechanical

Elongation A5 A5

30 % at 20 °C

min

Hardness, HBW HBW

223 [-] at 20 °C

max

Tensile strength Rm

550 - 750 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

230 MPa at 20 °C

min

Yield strength Rp1.0 Rp1.0

230 MPa at 20 °C

min

Thermal

Coefficient of thermal expansion α

1.651E-5 1/K at 200 °C

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Chemical properties

Element

Weight %

Comment

Fe

-

balance

Cr

19 - 21 %

Ni

11 - 13 %

Mn

2 %

max

Si

1.5 - 2.5 %

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Technological properties

Corrosion properties

Excellent - Superb corrosion resistance in chloride containing and acid environments, especially in phosphoric and organic acids. Corrosion resistance is superior to that of 1.4404. As a result of the duplex structure 1.4462 exhibits superior corrosion resistance to the austenitic grades in that it is not susceptible to intergranular corrosion and also in that this grade of steel is exceptionally resistant to stress corrosion cracking. This stainless steel is also resistant to pitting corrosion, which together with its resistance to stress corrosion cracking accounts for its extensive use in offshore applications.

Processing history

Solution annealed and quenched

This material data has been provided by Deutsche Edelstahlwerke Specialty Steel (DEW).

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.