436 Stainless Steel Wire

Shaped, Flat, Square, Round, Fine Wire, Plated and Bare Wire

436 Alloy Description

Alloy 436 is a Niobium (Columbium) stabilized variation of alloy 434. This addition minimizes “roping” or “ridging” during stretch forming operations. Alloy 436 should be used in welding application where the risk of preferential corrosion due to intergranular attack is minimized.

Applications

Architectural screens
Automotive exhaust applications

Chemistry Typical

Carbon: 0.12 max
Manganese: 1.00 max
Silicon: 1.00 max
Chromium: 16.00-18.00
Nickel: 0.50 max
Molybdenum: 0.75-1.25
Phosphorus: 0.040 max
Sulfur: 0.030 max
Columbium + Tantalum: 5xC min-0.70 max
Iron: Balance

Physical Properties

Density: 0.28 lbs/in³, 7.74 g/cm³

Electrical Resistivity: microhm-in (microhm-cm):
68°F (20°C): 23.68 (60)

Specific Heat: BTU/lb/°F (kJ/kg•K):
32-212°F (0-100°C): 0.11 (0.46)

Thermal Conductivity: BTU/hr/ft²/ft/°F (W/m•K)
At 212°F (100°C): 15.1 (26.1)
At 932°F (500°C): 15.2 (26.3)

Mean Coefficient of Thermal Expansion: in/in/°F (μm/m•K)
32-212°F (0-100°C): 5.2 x 10^-6(9.3)
32-1000°F (0-538°C): 6.3 x 10^-6(11.4)

Modulus of Elasticity: KSI (MPa)
29.0 x 10³ (200 x 10³) in tension

Magnetic Permeability: Magnetic

Melting Range: °F (°C) 2600-2750 (1427-1510)

Mechanical Properties at Room Temperature

Properties: Annealed
Ultimate Tensile Strength: 77 KSI min (531 MPa min)
Yield Strength: (0.2% Offset) 53 KSI min (365 MPa min)
Elongation: 22% min
Hardness: Rb 89 max

Properties Tempered
Alloy 434 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 corrosion information.

Standard Wire Finishes
Extra Clean: (XC) 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.

Forms
Continuous Coils
Cut to lengths
Precision cutting

Cold Forming
Alloy 436 is readily drawn and formed. Its drawing characteristics are similar to those of low carbon steel, although it is stronger in the annealed condition and will require stronger tooling and increased power. It is also adaptable to most hot-forming operations. It does have a slightly tendency to “rope” during forming, but it is minimized by the addition of colombium.

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

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.