DIN 1.4550 Stainless Steel Round Pipe
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1.4550 stainless steel pipe is a niobium-stabilized austenitic stainless steel. Niobium is added to improve intergranular corrosion resistance. The corrosion resistance in corrosive media such as acids, alkalis, and salts is the same as that of 321. It has good welding performance and can be used as resistant materials and resistant materials. Hot steel used. Parts under corrosion conditions of 400~900 degrees, high temperature welding structural parts.
The oxidation resistance, creep resistance and fatigue resistance of 1.4550 heat-resistant in high-temperature environments depend on its alloy composition and microstructure. The specific chemical composition of 1.4550 is: C: ≤ 0.05, Si: ≤ 1.00, Mn: ≤ 1.00, P: ≤ 0.040, S: ≤ 0.030, Cr: 16.00-19.00, Ni: 9.00-11.00, Mo: 0.80-1.50. In processes such as laser cutting and welding, the high melting point and good thermal stability of 1.4550 help improve processing efficiency and reduce production costs.
1. The polishing treatment of 4550 stainless steel polished tubes can improve its surface finish, reduce the adhesion of pollutants, and improve hygienic performance. Mechanical properties of 1.4550: tensile strength 650 MPa, yield strength 300 MPa, elongation 35%. 1.4550 has high radiation protection performance in nuclear industry fields such as nuclear reactors and radioactive waste treatment.
DIN 1.4550 Pipes Seamless Pipes Equivalent Grades
| Grade | 347 | |
| UNS No | S34700 | |
| Old British | BS | – |
| En | X6CrNiNb18-10 | |
| Euronorm | No | 1.4550 |
| Name | – | |
| Swedish SS | – | |
| Japanese JIS |
SUS |
|
Steel DIN 1.4550 Seamless Pipes
SS DIN 1.4550 Pipes Physical Properties
| Grade | DIN 1.4550 | |
|---|---|---|
| Density (kg/m3) | 8000 | |
| Elastic Modulus (GPa) | 193 | |
| Mean Coefficient of Thermal Expansion (m/m/0C) | 0-1000C | 17.2 |
| 0-3150C | 17.8 | |
| 0-5380C | 18.4 | |
| Thermal Conductivity (W/m.K) | at 1000C | 16.2 |
| at 5000C | 21.5 | |
| Specific Heat 0-1000C (J/kg.K) | 500 | |
| Electrical Resistivity (n.m) | 720 | |
1.4550 Stainless Steel Round Pipe Physical Properties:
| Melting point/℃ | Specific heat capacity/kg/(kg.k)℃0~100℃ | Thermal conductivity/w/(m.k)100~500℃ | Linear expansion coefficient/(10-6/k)100~500℃ | Resistivity/(Ω.mm2/m)20℃ | Longitudinal elastic modulus/GPa20℃ |
| 1398~1427 | 0.5 | 16.3~22.2 | 16.6~18.6 | 0.73 | 193 |
| Density g/cm | HardnessHBW | Hardness HRB | magnetic | ||
| Solid solution 187 | 90 |
GNEE products have high quality, flexible delivery time and high cost performance. The main materials and grades supplied include: 201, 202, 301, 304, 307, 309, 309s, 310, 310s, 316, 410, 430, 904, 2205, with samples in stock all year round.
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