AISI 204Cu | BS 3111 | 1.4597 | X8CrMnCuNB17-8-3 | Austenitic steel
Data sheet according to DIN EN 10088-3 for material number 1.4597
AISI 204CU is an austenitic stainless steel that is also known under the designations 1.4597, BS 3111, UNS S20430 and X8CrMnCuNB17-8-3. The material is a substitute for AISI 304 (1.4301) / AISI 304L (1.4307) and differs from these steels in that it has a higher copper content of 2.0 - 3.5 % and an increased manganese content of 6.5 - 9.0 % with a reduced nickel content (<3.0%). Stainless steel 204Cu has a tensile strength of 560 to 780 N/mm², a hardness of ≤ 245 HB and a density of 7.8 kg/dm³. The material can be used for welding and is non-magnetic. The material is well suited for cold forming and is characterised by good resistance to corrosion and stress cracks. Stainless steel 204Cu (1.4597, BS 3111, X8CrMnCuNB17-8-3) is used in a variety of industrial sectors, including the automotive industry, the electronics industry, the food industry and industrial chemistry.
Product range of stainless steel wire 204Cu
We are an experienced wholesaler and specialist supplier of high-quality stainless steel wire with customers throughout Europe. As a reliable B2B partner, we meet the diverse requirements of industry and trade and can often guarantee fast delivery times thanks to our large stock. We have stainless steel wire 204Cu in stock in standard dimensions between 2.50 mm and 10.00 mm. An overview of the diameters and information about our other stainless wires can be found via the links below.
Specifications of the material
EN material number 1.4597
EN short name X8CrMnCuNB17-8-3
EN standard 10088-3
Microstructure class: Austenitic steel
Comparable standards and designations
AISI 204Cu
BS 3111
Inox 204Cu
RVS 204CU
UNS S20430
Properties and chemical composition of stainless steel AISI 204Cu / 1.4597
C | Si | Mn | P | S | N | Cr | Cu | Mo | Ni | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
≤ 0,10 | ≤ 2,00 | 6,50 - 9,00 | ≤ 0,04 | ≤ 0,03 | 0,10 - 0,30 | 15,0 - 18,0 | 2,0 - 3,5 | ≤ 1,00 | ≤ 3,00 | - |
Mass fraction in % according to DIN EN 10088-3
Abbreviations: C = carbon, Cr = chromium, Cu = copper, Mn = manganese, Mo = molybdenum, N = nitrogen, Ni = nickel, P = phosphorus, S = sulphur, Si = silicon, Ti = titanium
Physical properties
Magnetisability: none
Density (kg/dm³): 7.8
Mechanical properties
The given values refer to the diameter range ≤ 160 (Ø in mm)*
Hardness in HB: ≤ 245
Yield strength Rp0.2 in Mpa: ≥ 270 Yield strength Rp1.0 in Mpa: ≥ 30
Yield strength Rp1.0 in Mpa: ≥ 305
Strength / Tensile strength Rm in Mpa: 560-780
Elongation at break A in % (longitudinal): 40
* These figures refer to mechanical properties at room temperature in the solution-annealed state (according to EN 10088-3)
Yield strengths at elevated temperature in the solution-annealed condition
Temp in °C | 100 °C | 150 °C | 200 °C | 250 °C | 300 °C | 350 °C | 400 °C | 450 °C | 500 °C | 550 °C |
|---|---|---|---|---|---|---|---|---|---|---|
Rp0,2 in Mpa | 260 | 235 | 218 | 204 | 190 | 180 | 175 | 168 | 165 | 165 |
Rp1,0 in Mpa | 225 | 205 | 190 | 177 | 165 | 152 | 145 | 140 | 137 | 135 |
Stainless steel AISI 204Cu (1.4597, 3111, X8CrMnCuNB17-8-3) has good weldability and can be used with many common welding methods such as TIG welding and MIG welding. It can also be used for arc welding. After welding, the material should be cooled in the air.
Heat treatment and hot forming
Solution heat treatment (cooling in air): 1000-1100 °C
Hot forming (cooling in air or water): 1200-900 °C
Corrosion resistance
The austenitic stainless steel AISI 204Cu (1.4597, X8CrMnCuNB17-8-3) has good corrosion resistance, which is essentially comparable to that of stainless steel 1.4301 (AISI 304). The material is resistant to intergranular corrosion, weathering and stress corrosion cracking.
Applications of stainless steel AISI 204Cu / BS 3111
Due to its good corrosion resistance to chloride-containing media and acids, the austenitic stainless steel AISI 204Cu (1.4597, X8CrMnCuNB17-8-3) is regularly used in various industrial sectors. This stainless steel is typically used in the chemical industry, where the material is used to manufacture containers, pipes and fittings, for example. In the pharmaceutical and food industries, this material is used for plant components. In environmental technology, stainless steel 1.4597 is used, among other things, in wastewater treatment plants and biogas plants. In energy and power plant technology, this steel is used in thermal power plants, geothermal plants and in flue gas desulphurisation plants. Products made of AISI 204Cu stainless steel (1.4597, BS 3111) include heat exchanger components, valves and fittings, condenser tubes, anode cages, screws and jewellery.
The data provided in this data sheet or material information sheet has been compiled to the best of our knowledge and is based on the current version of the relevant standard. We do not accept any liability for any errors.
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