204CU - 4 Pages

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204CU

Catalog excerpts

Applications Hinge pins and baskets use in the tobacco industry. Fasteners where higher strength, non-magnetic behaviour and galling resistance over 304 or 304HQ is required. Description Alloy 204CU is a chromium-magnesium austenitic stainless steel with an addition of 2-4% copper and nitrogen of 0.05-0.25%. Due to the addition of copper the alloy has better formability than 201 and 304. The copper improves corrosion and resistance to stress corrosion cracking in certain media. 204CU bridges the cost-property gap between 200 and 300 series stainless. Alloy 204CU is slightly after cold working but can be minimized. Chemistry Typical Carbon: 0.15 max Phosphorus: 0.060 max Silicon: 1.00 max Nickel: 1.50-3.50 Chromium: 15.50-17.50 Manganese: 6.5-9.0 Copper: 2.00-4.00 Molybdenum: 1.00 max Sulfur: 0.030 max Nitrogen: 0.05-0.25 Iron: Balance Physical Properties Density: 0.282 lb/in3 7.81 g/cm3 Electrical Resistivity: ohm-inch (microhms-m): 30.039 (0.763) Mean Specific Heat: BTU/lb-°F (J/g-°C): At 73 - 212 °F (23 - 100 °C): 0.119 (.511) Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & 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. Copyright January 2014 Revision 06.01.2015. Ulbrich Stainless Steels & Special Metals, Inc. All rights reserved. We Deliver Precision®

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77 -1022 °F (25 - 550 °C): 10.66 (19.2) 77 -1112 °F (25 - 600 °C): 10.77 (19.4) 77 -1202 °F (25 - 650 °C): 10.83 (19.5) 77 -1292 °F (25 - 700 °C): 10.77 (19.4) Modulus of Elasticity: KSI (MPa) 29 x 103 (200 x 103) in tension Magnetic Permeability, H = 200 Oersteds: Annealed: 1.02 max* * Alloy 204CU is slightly after cold working but can be minimized. For wire products contact Ulbrich Technical Services for details. Melting Range: 2552 - 2642 °F (1400 -1450 °C) Forms Coil - Strip, Foil, Ribbon Wire - Profile, Round, Flat, Square Mechanical Properties at Room Temperature Properties: Annealed...

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204CU STAINLESS STEEL Properties: Tempered Typical 5% Cold Worked Ultimate Tensile Strength: 97 KSI (669 MPa) Yield Strength: 63 KSI (435 MPa) Elongation: 69% Reduction in Area: 77% 10% Cold Worked Ultimate Tensile Strength: 108 KSI (745 MPa) Yield Strength: 81 KSI (559 MPa) Elongation: 49% Reduction in Area: 65% 20% Cold Worked Ultimate Tensile Strength: 123 KSI (849 MPa) Yield Strength: 104 KSI (718 MPa) Elongation: 34% Reduction in Area: 54% 30% Cold Worked Ultimate Tensile Strength: 149 KSI (1026MPa) Yield Strength: 133 KSI (910 MPa) Elongation: 26% Reduction in Area: 66% 40% Cold...

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204CU STAINLESS STEEL Additional Properties Corrosion Resistance Refer to NACE (National Associate of Corrosion Engineers) for recommendations. Finishes # 1 - Hot rolled annealed and de-scaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required. # 2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process. # 2B - Smooth finish produced by cold rolling, annealing and de-scaling. A light cold rolling pass is added after...

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