Alloy 718

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Description

Alloy 718 is a precipitation hardenable nickel chromium alloy. As the major alloy elements are molybdenum, niobium + tantalum, aluminium and titanium, Alloy 718 gives exceptionally high yield, good corrosion resistance, tensile and creep rupture properties at temperatures up to 700°C (1300F). Broder Metals Group stocks Alloy 718 in sizes from 1/2” (12.7 mm) to 4” (101.6 mm) backed up by key sizes above this core range. Our stock is bought to API 6A 718 and NACE and as such meets most application uses for the oil industry to maximise resistance to stress corrosion cracking or treated to give maximum strength and high creep resistance and weldability. Different heat treatments are available: Solution annealed and Age hardened.

Related Standards

Equivalent Materials

Los datos sobre este material han sido proporcionados por Broder Metals Group.

A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

Ashby charts

All categories

Propiedades

General

Property	Value	Comment
Tamaño de grano	2 μm Show Supplier Material materials with Tamaño de grano of 2 μm	Maximum, ASTM E112

Medidas

Property	Value
Longitud	12.7 - 103.6 mm Show Supplier Material materials with Longitud of 12.7 - 103.6 mm

Mecánica

Property	Temperature	Value	Comment
Charpy impact energy, V-notch	-60.0 °C	68 J Show Supplier Material materials with Charpy impact energy, V-notch of 68 J	Average
Dureza Brinell (HBW)	23.0 °C	298 - 363 [-] Show Supplier Material materials with Dureza Brinell (HBW) of 298 - 363 [-]
Dureza Rockwell C	23.0 °C	32 - 40 [-] Show Supplier Material materials with Dureza Rockwell C of 32 - 40 [-]
Elongación	23.0 °C	20 % Show Supplier Material materials with Elongación of 20 %
Energía de impacto Charpy, transversal	-60.0 °C	47 J Show Supplier Material materials with Energía de impacto Charpy, transversal of 47 J	Single value
Estricción	23.0 °C	35 % Show Supplier Material materials with Estricción of 35 %
Límite elástico Rp 0,2	23.0 °C	120 - 145 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 120 - 145 MPa
Resistencia a la tracción	23.0 °C	1034 MPa Show Supplier Material materials with Resistencia a la tracción of 1034 MPa

Chemical properties

Property	Value	Comment
Aluminio	0.4 - 0.6 % Show Supplier Material materials with Aluminio of 0.4 - 0.6 %
Azufre	0.01 % Show Supplier Material materials with Azufre of 0.01 %
Bismuto	5E-5 % Show Supplier Material materials with Bismuto of 5E-5 %
Boro	6E-3 % Show Supplier Material materials with Boro of 6E-3 %
Calcio	3E-3 % Show Supplier Material materials with Calcio of 3E-3 %
Carbono	0.045 % Show Supplier Material materials with Carbono of 0.045 %
Cobalto	1 % Show Supplier Material materials with Cobalto of 1 %
Cobre	0.23 % Show Supplier Material materials with Cobre of 0.23 %
Cromo	17 - 21 % Show Supplier Material materials with Cromo of 17 - 21 %
Fósforo	0.01 % Show Supplier Material materials with Fósforo of 0.01 %
Hierro	Balance
Magnesio	6E-3 % Show Supplier Material materials with Magnesio of 6E-3 %
Manganeso	0.35 % Show Supplier Material materials with Manganeso of 0.35 %
Molibdeno	2.8 - 3.3 % Show Supplier Material materials with Molibdeno of 2.8 - 3.3 %
Níquel	55 % Show Supplier Material materials with Níquel of 55 %
Otro	4.78 - 5.2 % Show Supplier Material materials with Otro of 4.78 - 5.2 %	Cb+Ta
Plomo	1E-3 % Show Supplier Material materials with Plomo of 1E-3 %
Selenio	5E-5 % Show Supplier Material materials with Selenio of 5E-5 %
Silicona	0.35 % Show Supplier Material materials with Silicona of 0.35 %
Titanio	0.8 - 1.15 % Show Supplier Material materials with Titanio of 0.8 - 1.15 %

Technological properties

Property
Application areas	Ideal applicationsfor Alloy 718 are in oil tools, such as gate valves, choke stems, etc., and high strength applicationssuch as fasteners and turbines.