What is the steel number 1.4301 SS pipe?
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What is the steel number 1.4301 SS pipe?
The steel number 1.4301 is a European standard (EN) designation for the most common austenitic stainless steel, widely known as AISI 304, Grade 304, or X5CrNi18-10, containing about 18% chromium and 10% nickel, offering excellent corrosion resistance, formability, and weldability for general use in kitchens, tanks, and construction.
1.4301 stainless steel cold rolled pipe Key Characteristics:
Type: Austenitic Stainless Steel.
Composition: Roughly 18% Chromium (Cr) and 10% Nickel (Ni).
Designations: 1.4301 (EN), X5CrNi18-10 (Alphanumeric), AISI 304, SUS304 (Japanese).
Properties: Good corrosion resistance, excellent formability, weldability, and toughness, even at low temperatures.
Magnetic: Non-magnetic in the annealed (softened) state but can become slightly magnetic after cold working or welding.
Applications: Widely used for kitchen sinks, food processing equipment, architectural elements, tanks, pipelines, and general fabrication.
1.4301 stainless steel Chemical Composition (wt.%)
Conforms to EN 10088-2 standard, with 18.0–20.0% Cr, 8.0–10.5% Ni, ≤0.08% C, ≤1.00% Si and ≤2.00% Mn; the chromium-nickel alloy system forms a dense oxide film on the surface, which is the core basis for its corrosion resistance.
1.4301 stainless steel Mechanical Properties (at room temperature)
Tensile strength: ≥520 MPa
Yield strength: ≥205 MPa
Elongation: ≥40%
Brinell hardness (HB): ≤201
What are the properties of 1.4301 SS round pipe?
Corrosion Resistance
1.4301 stainless steel seamless tubes exhibit excellent uniform corrosion resistance in weak acid, weak alkali, and neutral salt environments; after 144 hours in a 5% NaCl neutral salt spray test, the corrosion rate is ≤0.005 mm/a, which is more than 20 times lower than that of ordinary carbon steel; it has good corrosion resistance to atmospheric, freshwater, and food-grade media, but is not recommended for long-term use in seawater or high-chloride environments.
High-Temperature Performance
1.4301 stainless steel hot-rolled tubes can be used continuously at temperatures up to ≤870℃, and for short periods at temperatures up to 925℃; when the temperature is below 400℃, the mechanical strength retention rate is above 80%, making it suitable for medium and low-temperature heat exchange and piping systems.
Welding Performance
1.4301 stainless steel tubes support common welding processes such as TIG and MIG; the optimal welding current range is 120-140A, and the tensile strength retention rate of the weld is ≥95%; no preheating is required during welding, and the post-weld performance is stable.
Machining Performance
1.4301 cold-worked stainless steel tubes have excellent cold working and machining properties, with a thickness tolerance of ±0.05 mm; precision machining such as cutting, tapping, and polishing can be performed according to application requirements.
Hygienic and Environmental Performance
1.4301 sanitary stainless steel tubes comply with FDA and EU (EC) No 1935/2004 food-grade contact standards, are non-toxic and odorless, do not release harmful substances, and are suitable for food, beverage, and pharmaceutical piping systems.
With 18 years of experience in pipe manufacturing, GNEE is a trustworthy supplier of stainless steel pipes. The factory not only produces standard-sized annealed steel pipes but also offers extended pipes of 18 meters and 25 meters to meet the diverse needs of its customers. The factory is fully equipped with facilities including cold rolling mills, smokeless furnaces, pickling tanks, ultrasonic eddy current cleaning machines, and physical and chemical laboratories.
GNEE has a comprehensive quality control process in place, employing professional MTSCO certified inspectors throughout the pre-production, production, and post-production stages, thus providing customers with more reliable product quality assurance. Furthermore, GNEE's products are ISO, PED, and AD2000 certified, demonstrating its strength and reputation in quality.
