Haynes® HR-120® (Alloy HR-120) Wire UNS N08120

Alloy HR-120 alloy is a solid-solution-strengthened heat-resistant alloy that provides excellent strength at elevated temperature, combined with resistance to carburizing and sulfidizing environments.

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Shaped, Flat, Square, Round, Fine Wire, Plated and Un-plated ASTM B407, ASTM B408, ASTM B409

Alloy HR-120 Description

Alloy HR-120 alloy is a solid-solution-strengthened heat-resistant alloy that provides excellent strength at elevated temperature, combined with resistance to carburizing and sulfidizing environments. Its oxidation resistance is comparable to other widely used Fe-Ni-Cr materials, such as alloys 330 and 800H, but its strength at temperatures up to 2000 deg. F (1095 deg. C) is significantly higher.


Heat treating baskets
Wire mesh furnace belts and basket liners
Heat treating fixtures

Chemistry Typical

Nickel: 37.0 nom
Chromium: 25.0 nom
Cobalt: 3.0 max
Molybdenum: 2.5 max
Tungsten: 2.5 max
Columbium: 0.7 nom
Aluminum: 0.01 nom
Manganese: 0.7nom
Silicon: 0.06 nom
Carbon: 0.05 nom
Boron: 0.004 nom
Nitrogen: 0.50 nom
Iron: Balance

Physical Properties

Density: 0.291 lb/in³, 8.07 g/cm³

Electrical Resistivity: µohm-in, (µohm -cm)
At 70°F (20°C): 41.4 (105.2)
At 200°F (100°C): 42.4 (107.8)
At 400°F (200°C): 44.4 (112.5)
At 600°F (300°C): 45.4 (114.9)
At 800°F (400°C): 46.3 (116.7)
At 1000°F (500°C): 47.3 (119.3)
At 1200°F (600°C): 48.2 (121.4)
At 1400°F (700°C): 48.8 (123.1)
At 1600°F (800°C): 49.4 (124.5)
At 1800°F (900°C): 50.0 (125.7)
At 2000°F (1000°C): 50.3 (126.6)
At 2200°F (1100°C): 50.7 (127.8)

Specific Heat: BTU/lb-°F (J/Kg-°K):
At 70°F (20°C): .112 (467)
At 200°F (100°C): .116 (483)
At 400°F (200°C): .121 (500)
At 600°F (300°C): .125 (522)
At 800°F (400°C): .130 (531)
At 1000°F (500°C): .135 (558)
At 1200°F (600°C): .144 (607)
At 1400°F (700°C): .152 (647)
At 1600°F (800°C): .159 (655)
At 1800°F (900°C): .164 (660)
At 2000°F (1000°C): .167 (663)
At 2200°F (1100 °C): .169 (667)

Thermal Conductivity: BTU-in/hr-ft²-°F (W/m-K)
At 70°F (20°C): 78 (11.4)
At 200°F (100°C): 84 (12.7)
At 400°F (200°C): 96 (14.1)
At 600°F (300°C): 108 (15.4)
At 800°F (400°C): 121 (17.1)
At 1000°F (500°C): 134 (18.7)
At 1200°F (600°C): 150 (21.0)
At 1400°F (700°C): 168 (23.3)
At 1600°F (800°C): 180 (24.59
At 1800°F (900°C): 191 (26.2)
At 2000°F (1000°C): 205 (28.0)
At 2200°F (1100 °C): 216 (29.6)

Mean Coefficient of Thermal Expansion: µin/in-°F (m/m-°C)
78-200°F (25-100°C): 7.95 (14.3 x 10-6)
78-400°F (25-200°C): 8.29 (14.9 x 10-6)
78-600°F (25-300°C): 8.56 (15.3 x 10-6)
78-800°F (25-400°C): 8.80 (15.8 x 10-6)
78-1000°F (25-500°C): 8.98 (16.1 x 10-6)
78-1200°F (25-900°C): 9.24 (16.4 x 10-6)
78-1400°F (25-700°C): 9.52 (16.9 x 10-6)
78-1600°F (25-800°C): 9.72 (17.3 x 10-6)
78-1800°F (25-900°C): 9.87 (17.6 x 10-6)

Modulus of Elasticity: KSI (MPa)
28.6 x 10³ (197 x 10³) in tension

Melting Range: 2375-2600°F (est.), (1300-1425°C):

Mechanical Properties at Room Temperature

Properties: Annealed Typical

Ultimate Tensile Strength: 106.5 KSI (735 MPa)
Yield Strength: 45.6 KSI (375 MPa)
Elongation: 50%

Properties: Tempered

Alloy HR-120 can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich Wire for details.

Additional Properties

Corrosion Resistance

Refer to NACE (National Association of Corrosion Engineers) for recommendations.

Standard Wire Finishes

Extra Clean: Extra clean is also referred to as “bright annealed” or “bright annealed and cold rolled”

Grease (round wire only): Drawn in a heavy grease produces an “Ultra bright” finish for decorative applications

Soap (round wire only): Soap is used as a lubricant in the drawing process and is not removed. It acts as a lubricant during customer part forming operation.

A soap finish is available in tempered products.
Plated: Many plating options are available.
*Special finishes are available: Contact Ulbrich Wire Sales with special finish and plating requests.


Continuous Coils
Cut to lengths
Precision cutting


For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”.
HAYNES® HR-120™is a registered trade mark of Haynes International

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels and Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the ‘applications’ noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.

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