Hastelloy X、N06002

 

HastelloyX overview

The superalloy HastelloyX is a nickel-chromium-molybdenum alloy with cobalt and tungsten added. HastelloyX alloy has excellent oxidation resistance at high temperatures up to 1200 ° C, and can also be used in neutral and reducing atmospheres. At the same time, HastelloyX alloy can resist carbonization and nitriding atmosphere.

 

HastelloyX Chemical Composition

%	Ni	Cr	C	Mn	Si	Mo	W	P	S
Min.	margin	20.5	0.05			8.0	0.2
Max.		23.0	0.15	1.0	1.0	10.0	1.0	0.04	0.03

 

Hastelloy X density

Density: ρ = 8.3g / cm3

 

Hastelloy X melting temperature range

Melting temperature range: 1260 ～ 1355 ℃

 

HastelloyX has the following features

● Excellent oxidation resistance up to 1200 ℃

● Good high temperature strength

● Good formability and weldability

● Good resistance to stress corrosion cracking

 

HastelloyX application areas

Due to its corrosion resistance in various atmospheres at high temperatures and excellent high-temperature strength, HastelloyX has been widely used in various high-temperature environments.

 

Typical application areas:

● Industrial and aviation turbines (combustion chambers, rectifiers, structural covers)

● Industrial furnace parts, support rollers, grids, ribbons and radiant tubes

● Spiral tube in petrochemical furnace

● High-temperature gas-cooled nuclear reactor

 

Hastelloy X welding

HastelloyX can be welded by various welding processes, such as tungsten electrode inert gas shielded welding, plasma arc welding, manual sub-arc welding, metal extremely inert gas shielded welding, and molten extremely inert gas shielded welding. Preference is given to pulsed arc welding.

Before welding, the material must be in the solution treatment state to remove oxide scale, oil stains and various mark marks. The width of each side of the weld is about 25mm, and it needs to be polished to a bright metal surface.

With low heat input, the inter-layer temperature does not exceed 100 ° C.

No pre- and post-weld heat treatment required

 

Special alloys commonly used in the petroleum industry:

Stainless steel: 316LN, 1.4529, 1.4539, 254SMO, 654SMO, etc.

High-temperature alloy: GH4049

Nickel-based alloys: Alloy 31, Alloy 926, Incoloy 925, Inconel 617, Nickel 201, etc.

Corrosion-resistant alloys: NS112, NS322, NS333, NS334