302 Stainless Steel Wire UNS 30200

Shaped, Flat, Square, Round, Fine Wire, Plated and Bare Wire AMS 5515, AMS 5516, AMS 5903 (1/4 Hard), AMS 5906 (full hard) 302 Alloy

Description

Alloy 302 is an austenitic stainless steel which has better corrosion resistance than alloy 301. With its higher nickel content alloy 302 does not work harden as quickly as alloy 301. The alloy is not hardenable by heat treatment and in non-magnetic in the annealed condition. It becomes increasingly magnetic with cold working. If carbide precipitation is an issue 304 may be a better choice with its lower carbon content.

Applications

• Various screening applications
• Springs
• Wire forms
• Fasteners
• Washers
• Clamps
• Electrical connectors

Chemistry Typical

• Carbon: 0.08-0.15
• Manganese: 2.00 max
• Silicon: 1.00 max
• Chromium: 17.00-19.00
• Nickel: 7.00-10.00
• Molybdenum: 0.75 max
• Phosphorus: 0.040 max
• Sulfur: 0.030 max

Physical Properties

Density: 0.29 lbs/in³, 8.03 g/cm³

Electrical Resistivity microhm-in(microhmcm):
At 68°F (20°C): 28.4 (72)
At1200°F (659°C): 45.8 (116)

Specific Heat, BTU/lb/oF, (kJ/kg•K):
32-212°F (0-100°C): 0.12 (0.50)

Thermal Conductivity, BTU/hr/ft²/ft/oF (W/m•K):
At 212°F (100°C): 9.4 (16.2)
At 932°F (500°C): 12.4 (21.4)

Mean Coefficient of Thermal Expansion, in/in/oF(μm/m•K):
32-212°F (0-100°C): 9.4 x 10 (16.9)
32-600°F (0-315°C): 9.6 x 10 (17.3)
32-1000°F (0-538°C): 10.2 x 10 (18.4)
32-1200°F (0-649°C): 10.4 x 10 (18.7)

Modulus of Elasticity, KSI (MPa)
28.0 x 10³ (193 x ³) in tension
11.2 x 10³ (78 x 10³) in torsion

Magnetic Permeability, H = 200 Oersteds Annealed: 1.02 max

Melting Range, °F (°C) – 2550 – 2650 (1399 – 1454)

Mechanical Properties at Room Temperature

Properties: Annealed

Ultimate Tensile Strength: 75 KSI min (515 MPa min)
Yield Strength (0.2% offset): 30 KSI min (205 MPa min)
Elongation: 40% Min
Hardness: B92 or Equiv.

Properties Tempered

1/4 Hard

Ultimate Tensile Strength: 125-150 KSI (861-1034 MPa)
Yield Strength (.2% offset): 100-130 KSI (589-896 MPa)
Elongation: 20% nominal
Hardness: Rc 25-30

Full Hard

Ultimate Tensile Strength: 185-225 KSI (1275-1551 MPa)
Yield Strength (.2% offset): 170-210 KSI (1172-1447 MPa)
Elongation: 1-4 %
Hardness: Rc 40-45
∗Alloy 302 can be supplied in a rolled tempered condition. Contact Ulbrich Wire Technical
Service for details.

Additional Properties

Corrosion Resistance

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

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

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.