Alloy 825

Alternative und Handelsbezeichungen
Alloy 825

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Description

Alloy 825 is an austenitic nickel-iron-chromium alloy with additions of copper, molybdenum, and titanium-stabilised to resist pitting and intergranular attack. Molybdenum and copper enable Alloy 825 to resist reducing agents and acids, while chromium gives Alloy 825 resistance to oxidising conditions. Mechanical properties are stable up to approximately 550°C. It can be supplied in hot worked annealed and cold drawn conditions.

Related Standards

Equivalent Materials

Diese Materialdaten wurden von Broder Metals Group zur Verfügung gestellt

Alle Daten beziehen sich auf Raumtemperatur soweit nicht anderweitig spezifiziert. SI Einheiten werden verwendt soweit nicht anderweitig spezifiziert.
Äquivalente Standards sind ähnlich zu einem oder mehreren Standards die der Anbieter angegeben hat. Manche äquivalente Standards können strikter sein oder außerhalb der Bedingungen des ursprünglichen Standards.

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Eigenschaften

Mechanisch

Property	Temperature	Value
Dehnung	23.0 °C	30 % Show Supplier Material materials with Dehnung of 30 %
Streckgrenze Rp 0,2	23.0 °C	241 MPa Show Supplier Material materials with Streckgrenze Rp 0,2 of 241 MPa
Zugfestigkeit	23.0 °C	586 MPa Show Supplier Material materials with Zugfestigkeit of 586 MPa

Chemical properties

Property	Value
Aluminium	0.2 % Show Supplier Material materials with Aluminium of 0.2 %
Chrom	19.5 - 23.5 % Show Supplier Material materials with Chrom of 19.5 - 23.5 %
Eisen	22 % Show Supplier Material materials with Eisen of 22 %
Kohlenstoff	0.05 % Show Supplier Material materials with Kohlenstoff of 0.05 %
Kupfer	1.5 - 3 % Show Supplier Material materials with Kupfer of 1.5 - 3 %
Mangan	1 % Show Supplier Material materials with Mangan of 1 %
Molybdän	2.5 - 3.5 % Show Supplier Material materials with Molybdän of 2.5 - 3.5 %
Nickel	38 - 46 % Show Supplier Material materials with Nickel of 38 - 46 %
Schwefel	0.03 % Show Supplier Material materials with Schwefel of 0.03 %
Silizium	0.5 % Show Supplier Material materials with Silizium of 0.5 %
Titan	0.6 - 1.2 % Show Supplier Material materials with Titan of 0.6 - 1.2 %

Technological properties

Property
Application areas	Alloy 825 ideally suitable for use in heating coils, tanks, baskets and chains in sulphuric acid pickling plants, heat exchangers in phosphoric and other acid and chemical production applications. Other applications include sea-water-cooled heat exchangers, offshore product piping systems, for components in sour gas service in pollution- control equipment, and oil and gas well piping and in nuclear fuel reprocessing components.
Corrosion properties	Alloy 825 is therefore highly suitable where required properties include good resistance to stress-corrosion cracking, pitting, and crevice corrosion. Alloy 825 is also often used where oxidising and non-oxidising hot acids (especially sulphuric, phosphoric, nitric and organic acids, as well as alkalis such as sodium or potassium hydroxide) come into contact with the metal.