SS 1.4845 Seamless Tubing is a common stainless steel material, also known as X8CrNi25 - 21, corresponding to 310S stainless steel in the ASTM standard. Its material number is 1.4845, which is a heat-resistant stainless steel and complies with the German standard DIN EN10095 - 1999.
Stainless Steel 1.4845 Seamless Tubes have super heat resistance and are often used in the manufacture of boilers, combustion chambers, exhaust gas emission devices, and gas turbine components.
The chemical composition of SS 1.4845 Seamless Polished Tube: carbon (C) content ≤0.10, silicon (Si) ≤1.50, manganese (Mn) ≤2.00, chromium (Cr) between 24.00 - 26.00, nickel (Ni) 19.00 - 22.00, sulfur (S) ≤0.015, phosphorus (P) ≤0.045, nitrogen ≤0.11.
AISI 1.4845 Seamless Round Tube has mechanical properties, including tensile strength σb (MPa) ≥ 520, conditional yield strength σ0.2 (MPa) ≥ 205, elongation δ5 ≥ 40, and hardness ≤ 200HV.
The thermal expansion coefficient of 1.4845 Austenitic Stainless Steel Seamless Tubes is 14.4×10⁻⁶/K at 0℃～100℃ and 17.5×10⁻⁶/K at 0℃～500℃.
DIN 1.4845 Stainless Steel Tubes has high chromium and nickel content, and its corrosion resistance is similar to but better than AISI 304. This feature makes it suitable for a variety of industrial scenarios, especially for equipment in the chemical, petroleum, power and other industries that require high temperature, high pressure and corrosion resistance.
When 1.4845 is used at high temperatures, the homogeneity of the internal structure is critical. A homogeneous structure is important for maintaining its corrosion resistance and also affects its thermal fatigue performance. Under the influence of thermal stress, a homogeneous structure allows the material to deform more evenly, avoids local stress concentrations, and improves thermal fatigue life.
As a professional SS 1.4845 Seamless Tubes Exporter, GNEE provides value-added services:
1. Polishing of stainless steel tubes
2. Beveling of stainless steel tubes
3. Honing and turning of stainless steel tubes
4. Heat treatment and annealing
5. Positive Material Identification (PMI)
6. UT Testing
In some cases, UT testing of stainless steel tubes may be required. We can assist you in meeting this requirement.
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