Custom 450® Stainless Steel Wire

Custom 450® stainless is a age-hardenable martensitic stainless steel that has very good corrosion resistance and moderate strength.

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Shaped, Flat, Square, Round, Fine Wire, Plated and Bare Wire AMS5763, AMS 5773, AMS 5863, ASTM A 564, ASTM A693, ASTM A 959

Custom 450® Alloy Description

Custom 450® stainless is a age-hardenable martensitic stainless steel that has very good corrosion resistance and moderate strength. Although the alloy has a yield strength higher than 100 KSI (689 MPa) in the annealed condition, it is easily fabricated. A single-step aging treatment develops higher strength with good ductility and toughness. Because it has corrosion resistance similar to alloy 304 stainless and with much higher yield strength, Custom 450® has been used in applications where alloy 304 was not strong enough. It has also replaced alloy 410 stainless directly on a strength basis where alloy 410 had insufficient corrosion resistance. Mechanical properties will depend on the aging temperature selected.*

* Information supplied by Carpenter Technology Corp


Screens for the pulp and paper industry
Medical devices
Aircraft parts
Power generation applications
Chemical processing
Nuclear applications

Chemistry Typical

Carbon: 0.05 max
Manganese: 1.00 max
Phosphorus: 0.030 max
Sulfur: 0.030 max
Silicon: 1.00 max
Chromium: 14.00-16.00
Nickel: 5.00-7.00
Molybdenum: 0.50-1.00
Copper: 1.25-1.75
Columbium: 8 x Carbon min
Iron: Balance

Physical Properties

Density: 0.280 lb/in³, 7.75 g/cm³

Electrical Resistivity: ohm-cm
At 68°F (20°C): 0.0000992

Specific Heat: BTU/lb-°F (J/g-°C):
73-216°F (23-102°C): 0.114 (0.477)

Thermal Conductivity: BTU-in/hr-ft²-°F (W/m-K): Condition H900
At 70°F (21°C): 104(15.0)
At (200°C): 18.2 W/m-K
At (500°C): 24.4 W/m-K

Mean Coefficient of Thermal Expansion: in/in-°F
75-200°F: 5.88 x 10
75-300°F: 5.62 x 10
75-400°F: 5.68 x 10
75-500°F: 5.80 x 10
75-600°F: 5.91 x 10
75-700°F: 5.98 x 10
75-800°F: 6.09 x 10
75-900°F: 6.13 x 10
75-1100°F: 6.17 x 10

Modulus of Elasticity: KSI (MPa)
28-29 x 10³ (193-200 x 10³) in tension

Mechanical Properties at Room Temperature

Properties: Annealed Typical

Ultimate Tensile Strength: 142 KSI (979 MPa)
Yield Strength: 118 KSI (814 MPa)
Elongation: 13%
Hardness: Rc 28

Properties: Tempered

Custom 450® can be cold rolled to achieve the temper properties required by specific
customers and/or manufacturing requirements. Contact Ulbrich Wire for details.
Age Hardened: Typical

Ultimate Tensile Strength: 196 KSI (1351 MPa)
Yield Strength: 188 KSI (1296 MPa)
Elongation: 14%
Hardness: Rc 42.5

Ultimate Tensile Strength: 187 KSI (1289 MPa)
Yield Strength: 184 KSI (1269 MPa)
Elongation: 16%
Hardness: Rc 41.5

Ultimate Tensile Strength: 173 KSI (1193 MPa)
Yield Strength: 169 KSI (1165 MPa)
Elongation: 17%
Hardness: Rc 39

Ultimate Tensile Strength: 160 KSI (1103 MPa)
Yield Strength: 152 KSI (1048 MPa)
Elongation: 20%
Hardness: Rc 37

Ultimate Tensile Strength: 142 KSI (979MPa)
Yield Strength: 92 KSI (634 MPa)
Elongation: 23%
Hardness: Rc 28

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
Heat Treatment
Custom 450® can be hardened by cold working and with a heat treatment.


For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”.

Custom 450® is a registered trademark of the Carpenter Technology Corp.
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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