1.4003 | UNS S40977 | X2CrNi12 | Ferritic stainless steel
Data sheet according to DIN EN 10088-3 for material number 1.4003
1.4003 (UNS S40977 / X2CrNi12) is a corrosion-resistant ferritic chromium steel that has a comparatively high strength among ferritic steels. The material is easy to weld in the larger dimensional ranges and also has good forgeability and medium machinability. Processing options include cold forming, cold upsetting and machining. Stainless steel 1.4003 / X2CrNi12 has low to medium corrosion resistance (PREN value 10.5 to 12.5). Other properties of the material include its resistance to hydrogen sulphide and hydrogen. This ferritic stainless steel is also characterised by its good magnetisability (magnetic properties (Hc < 200 A/m). The material is suitable for use at low temperatures, but can also be used up to 300°C. It is often used in the construction industry.
Specifications
EN material number: 1.4003
EN abbreviation: X2CrNi12
EN standard: 10088-3
Microstructure class: ferrite
Comparable standards and designations
AFNOR X2CrNi12
B.S.X2CrNi12
UNS S40977
Properties and chemical composition of stainless steel 1.4003
C | Si | Mn | P | S | N | Cr | Cu | Mo | Ni | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
≤ 0,03 | ≤ 1,00 | ≤ 1,50 | ≤ 0,04 | ≤ 0,03 | ≤ 0,03 | 10,5 - 12,5 | - | - | 0,30 - 1,00 | - |
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
Magnetizability: present
Density (kg/dm³): 7.7
Thermal conductivity (at up to 20°C): 25
Electronic resistance at room temperature (in Ω mm²/m): 0.60
Mechanical properties
The specified values refer to the diameter range ≤ 100 (Ø in mm).
Hardness in HB: ≤ 200
Yield strength Rp0.2 in Mpa: ≤ 200
Strength Rm in Mpa: 450-600
Elongation at break A in % (longitudinal): 20
Modulus of elasticity kN / mm²: 220
These data refer to mechanical properties at room temperature in annealed condition (according to EN 10088-3)
Yield strength at elevated temperature in the annealed condition
Temp in °C | 100 °C | 150 °C | 200 °C | 250 °C | 300 °C |
|---|---|---|---|---|---|
Rp0,2 in Mpa | 240 | 230 | 220 | 215 | 210 |
Ferritic stainless steel 1.4003 is characterised by good welding properties, especially in larger dimensional ranges. Suitable welding processes include arc welding, TIG welding, laser beam welding and gas fusion welding. However, this material is not suitable for oxyfuel welding. If a filler metal is required, materials 1.4316 or 1.4370 should be used. Subsequent heat treatment is generally not necessary.
Forgeability
The material 1.4003 can be forged in the temperature range from 1000°C to 1180°C. The material should then be allowed to cool slowly. The material should then be allowed to cool slowly. Open-die and closed-die forging is possible.
Heat treatment and hot forming
Solution annealing 680-740 °C (cooling by air)
Hot forming 1150-800 °C (cooling by air)
Machinability
Due to its high sulphur content, stainless steel 1.4003 only has good to medium machinability.
Corrosion resistance
With a PREN value of 10.5 to 12.5, the material 1.4003 has good corrosion resistance in non-chloride-containing and less aggressive environments. This stainless steel therefore offers significantly better corrosion protection than conventional structural steel. However, if the material is to be used in more aggressive media, additional protection such as a protective coating or galvanising is required.
Applications for stainless steel 1.4003 / UNS S40977
Stainless steel 1.4003 is used in many industrial sectors as it has good corrosion resistance and strength. Applications for this material include agricultural engineering and the automotive industry, where it is used in robust machinery and vehicle parts. Tank and container construction and the construction industry use this material for durable and resistant structures. In the sugar and mining industries, it is valued for its resistance to aggressive environments. Stainless steel 1.4003 is also widely used in the oil industry, the transport industry and in general mechanical engineering. It is also well suited for electronic equipment.
Processing options
Ferritic chromium steel 1.4003 offers a wide range of processing options, including cold forming, cold heading and machining.
Cold forming allows the steel to be bent, drawn or pressed at room temperature, ensuring high dimensional accuracy and surface quality.
Cold heading is ideal for the production of fasteners such as screws and rivets as it increases the strength of the material.
Machining operations such as turning, milling and drilling allow precise and detailed shapes to be produced.
The information given in this data sheet has been compiled to the best of our knowledge and is based on the current version of the relevant standard. It is considered for reference only and we assume no liability for any errors.
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