Nippon Yakin Kogyo NASHX Heat Resistant Alloys

Manufacturer: Nippon Yakin Kogyo Co., Ltd
Model : NASHX

NASHX (UNS N06002)
Heat-Resistant Nickel Alloy

NASHX (UNS N06002) is a nickel-chromium-iron-molybdenum alloy with outstanding strength and oxidation resistance in temperatures reaching as high as 1200°C. With superior workability and weldability as well, it is excellent for use in gas turbine members as well as various heating furnace parts. Nippon Yakin supplies this product in plate, sheet, and strip forms

Chemical Composition47Ni-22Cr-9Mo-18Fe-1.5Co-0.6W
Product shapeNASHX (UNS N06002) Heat-Resistant Nickel AlloyCoilNASHX (UNS N06002) Heat-Resistant Nickel AlloySheetNASHX (UNS N06002) Heat-Resistant Nickel AlloyPlate
WorkabilityWe recommend using a range of 982 to 1177°C for hot working NAS-HXK. You can easily cold work NAS-HXK, though it requires greater force compared to standard austenitic stainless steels. Apply solution treatment after working to achieve favorable creep properties.
WeldabilitySuch techniques as TIG, MIG, and shield metal arc welding can be used for NAS-HXK as with standard austenitic stainless steels. Cleanse the weld surface of oxidizing scales, oil, and dirt before welding.
Heat TreatmentThe recommended solution heat treatment temperature is between 1149 and 1177°C, the range stipulated in SAE AMS 5536L. Rapidly cool after heat treatment to prevent the formation of precipitates.
ApplicationsGas turbine parts, Furnace parts, Semiconductor manufacturing equipment.

Grade/Standard

Nippon Yakin GradeJISASTMAMS
NASHXNW6002UNS N060025536

Chemical Composition

CSiMnPSNiCrCoAlTiCuWFeB
Specification
(NW6002)
0.05–0.15≤1.00≤1.00≤0.040≤0.030Bal.20.50–23.000.50–2.500.20–1.0017.00–20.00≤0.010
Specification
(UNS N06002)
0.05–0.15≤1.00≤1.00≤0.040≤0.030Bal.20.50–23.000.50–2.500.20–1.0017.00–20.00≤0.010
Specification
(UNS N06002)
0.05–0.15≤1.00≤1.00≤0.040≤0.030Bal.20.50–23.000.50–2.500.20–1.0017.00–20.00≤0.010

Physical Properties

Density [g/cm³]8.2
Specific heat [J/kg•K]434
Electrical resistivity [μΩ•cm]113
Thermal conductivity [W/m•K]10.5
Average coefficient of thermal expansion [10⁻⁶/°C]25–200°C 13.9
25–400°C 14.5
25–600°C 15.0
25–800°C 15.9
25–1000°C 16.7
Young’s modulus [MPa]19.5 × 10⁴
Magnetism [μ]None
Melting range [°C]1290–1365

Mechanical Properties

Mechanical Properties at Room Temperature

0.2% proof stress [MPa]Tensile strength [MPa]Elongation [%]Hardness [HV] [HBW]
Specification (NW6002)≥245≥660≥35
Specification (UNS N06002)≥240≥655≥35
Specification (SAE AMS 5536M)≥310≥724≥35
Example
Hot-rolled plate 6 mm2
38877240
Example
Cold-rolled sheet 1.2 mm2
36977745183

Impact Value

Aging TreatmentTest Temperature (°C)Impact Value (J/cm²)
Solution-treated NASHXNot applied-196138
Not applied-78162
Not appliedRoom temp.184
NASHX solution treated, then aged816°C for 50hrRoom temp.53
816°C for 150hrRoom temp.45
816°C for 500hrRoom temp.41

High Temperatures Strength

Nippon Yakin Kogyo NASHX Heat Resistant Alloys

Creep Properties

Test temperature [°C]Load [MPa]Rupture time [hr]Rupture elongation [%]
Specification (SAE AMS 5536M)816110≥24≥8
ExampleHot-rolled plate 35 mm28161106376
Hot-rolled plate 12 mm28161107797
Cold-rolled sheet 3 mm28161109397
Cold-rolled sheet 1.2 mm28161106774

Formability

A formability test on a 1.5mm thick sheet of solution-treated NASHX with a number 2B finish demonstrated that NASHX is easily formed through cold working.

Erichsen Value (mm)Limited Drawing Ratio
NASHX10.32.10

A 180° bending test was performed on a 3mm thick sheet of solution-treated NASHX with a number 2B finish to demonstrate the bending radius of 2t (where t is the nominal thickness).

Nippon Yakin Kogyo NASHX Heat Resistant Alloys

Workability

We recommend using a range of 982 to 1177°C for hot working NASHX. NASHX can also be easily cold worked. Keep in mind that working NASHX requires greater force compared to standard austenitic stainless steels. Apply solution treatment after working to achieve favorable creep properties.

Weldability

Such techniques as TIG, MIG, and shield metal arc welding can be used for NASHX as with standard austenitic stainless steels. Before welding, the weld surface should be cleaned off oxidizing scales as well as oil and dirt.

Heat Treatment

The recommended solution heat treatment temperature is between 1149 and 1177°C, the range stipulated in SAE AMS 5536M. Rapid cooling is required after heat treatment to prevent precipitates.

Applications

  • Gas turbine parts
  • Furnace parts
  • Semiconductor manufacturing equipment

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