DAIKOWT X

GTAW
  • NICKEL ALLOYS
ALLOY X

Description

Hastelloy® X Rod
Rod that produces welds with X alloy, excellent combination of oxidation resistance, workability, and strength at high temperatures. Extremely high resistance to stress corrosion cracking in petrochemical applications, with good ductility even after prolonged exposure to 870 °C. Suitable for dissimilar joints between nickel-based alloys and Ni-Fe-Cr alloys, widely used in the aerospace industry for exhaust pipes, turbine blades, and afterburners.
Specifications
AWS A5.14
ERNiCrMo-2
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
Asme qualifications
F-No (QW432)
43
A-No (QW442)
-

Pren

50.175
Chem. Comp. %
DEFAULT
C
0.05
Mn
0.5
Ni
48
Cr
21.3
P
0.01
S
0.001
Mo
8.5
Si
1
Cu
0.5
Fe
18.5
W
0.5
Co
1
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
740
Yield strength Rp0.2 MPa
0
500
Elongation A (L0=5d0) %
0
40
Impact Charpy ISO-V
-
130J @ 20°C
Impact Charpy ISO-V
-
110J @ -50°C
Welding Parameters
1.6 mm
2.4 mm
Ampere
80A - 120A
130A - 160A
Voltage
10V - 13V
14V - 18V
Packaging
Ø 1,0÷4,0mm
Ø 1,0÷4,0mm
Packaging Type
product.packaging_types.product.packaging_types.product.packaging_types.Tubo di cartone 5kg
product.packaging_types.product.packaging_types.product.packaging_types.Tubo di cartone 5kg
ALLOY X
Description

Application

ALLOY X consumables are designed for welding Hastelloy X base metal, as well as dissimilar welds involving nickel-based alloys, stainless steels, carbon and low-alloy steels. They are also ideal for coating steels with nickel-chromium-molybdenum welding metals using GTAW and GMAW processes. This filler material offers extraordinary mechanical strength combined with excellent oxidation resistance up to temperatures of 1200°C. ALLOY X boasts remarkable resilience against corrosion and thermal shock, with deposits maintaining high temperature and fatigue resistance up to 1200°C. Commonly used in the aerospace industry, it is employed in engine exhaust pipes, turbine blades, nozzle vanes, and afterburner components. Additionally, in petrochemical applications, it effectively prevents stress corrosion cracking.

Alloy Type

The nominal composition (wt. %) of filler metal of this classification is 47 Ni, 22 Cr, 18 Fe, 9 Mo, and 1.5 Co.

Microstructure

Austenitic.

Materials

Ni-Cr-Mo high temperature strength nickel alloy used for welding similar base metals such as Hastelloy X and Inconel Alloy HX to itself or to Stainless Steels, Carbon Steels or low-alloy Steels.
  • ASTM: B 366, B 435, B 572
  • UNS: N06002
  • PROPRIETARY: Hastelloy® X Alloy (Haynes International Inc)

Welding & PWHT

For welding or heating nickel-based alloys, it is critical that the base metal is meticulously cleaned. Residues of oil, grease, paint, lubricants, graphite, temperature indicators, thread compounds, and similar materials, if present, may contain sulfur or lead, causing cracking or embrittlement in both the base metal and filler material. Preheating of nickel alloys is not necessary, except to bring them to room temperature or a typical shop operating temperature to avoid moisture condensation. A low heat input, maximum 1.5 kJ/mm, is recommended along with an interpass temperature not exceeding 150°C. Generally, solid-solution nickel alloys do not require post-weld heat treatment for use in corrosive environments.

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