Alloy 625 / 2.4856

Alternative und Handelsbezeichungen
Alloy 625

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Description

Alloy 625 is a low carbon (0.03%) nickel-chromium-molybdenum-niobium alloy which has excellent corrosion resistance to a wide range of corrosive media. Alloy 625 is normally supplied in annealed condition for wet corrosion applications and is TÜV-approved for pressure vessels in the temperature range from -196°C to 450°C.

Related Standards

VdTÜV Data Sheet 499

Equivalent Materials

Diese Materialdaten wurden von Hempel Special Metals 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.

Ashby charts

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Eigenschaften

Allgemein

Property	Temperature	Value
Dichte	23.0 °C	8.44 g/cm³ Show Supplier Material materials with Dichte of 8.44 g/cm³

Mechanisch

Property	Temperature	Value	Comment
Schlagfestigkeit, Charpy gekerbt	23.0 °C	1250 kJ/m² Show Supplier Material materials with Schlagfestigkeit, Charpy gekerbt of 1250 kJ/m²	min.

Thermisch

Property	Value
Schmelzpunkt	1290 - 1350 °C Show Supplier Material materials with Schmelzpunkt of 1290 - 1350 °C

Chemical properties

Property	Value	Comment
Aluminium	0.4 % Show Supplier Material materials with Aluminium of 0.4 %
Chrom	21 - 23 % Show Supplier Material materials with Chrom of 21 - 23 %
Eisen	0.4 % Show Supplier Material materials with Eisen of 0.4 %	max.
Kobalt	1 % Show Supplier Material materials with Kobalt of 1 %	max.
Kohlenstoff	0.03 % Show Supplier Material materials with Kohlenstoff of 0.03 %
Mangan	0.5 % Show Supplier Material materials with Mangan of 0.5 %	max.
Molybdän	8 - 10 % Show Supplier Material materials with Molybdän of 8 - 10 %
Nickel	Balance
Niobium	3.2 - 3.8 % Show Supplier Material materials with Niobium of 3.2 - 3.8 %	Ta+Nb
Phosphor	0.01 % Show Supplier Material materials with Phosphor of 0.01 %	max.
Schwefel	0.01 % Show Supplier Material materials with Schwefel of 0.01 %	max.
Silizium	0.4 % Show Supplier Material materials with Silizium of 0.4 %	max.
Tantal	3.2 - 3.8 % Show Supplier Material materials with Tantal of 3.2 - 3.8 %	Ta+Nb
Titan	0.4 % Show Supplier Material materials with Titan of 0.4 %	max.

Technological properties

Property
Application areas	2.4856 is used for: Natural gas pipelines Production systems and pipe coverings of riser pipes in oil production Preparation of phosphoric acid Shipbuilding and marine water lines Plants for the treatment of radioactive waste Flue gas scrubbers and dampers in flue gas cleaning systems
Corrosion properties	In annealed condition (grade 1) Alloy 625: Resistance to chlorine-induced stress corrosion cracking high resistance to mineral acids such as nitric, phosphoric, sulfuric, and hydrochloric acid good resistance to alkalis and organic acids exceptional resistance to pitting, crevice, erosion and intergranular corrosion
Other	Annealed Alloy 625 loses notched impact strength at room temperature after having been exposed to temperatures in the range from 538 ° C to 593 ° C
Welding	Welding rods and wire electrodes: Nicrofer S 6020 - FM 625 (2.4831) DIN EN ISO 18274: S Ni 6625 (NiCr22Mo9Nb) UNS N06625 AWS: 5.14: ErNiCrMo3 Covered electrodes: DIN EN ISO 14172: E Ni 6625 (NiCr22Mo9Nb) (2.4621) UNS W86112 AWS A5.11: ENiCrMo-3