GB/T 20878 16Cr25N Introduce
GB/T 20878 16Cr25N steel has excellent corrosion resistance in many different environments. It exhibits excellent resistance to corrosion in atmospheric conditions, dilute mineral acids, and most alkaline solutions. The alloy also has an excellent ability to resist galvanic corrosion when used in combination with other materials.
Smelting temperature:1383°C - 1113°C
Application:Stainless steel and heat resistant steel grades and chemical composition
GB/T 20878 16Cr25N Material Mechanical Properties
The ductility of GB/T 20878 16Cr25N steel is another key factor to consider. Its ductility is typically dependent on the grade, with higher grades having lower ductility and vice versa. The ultimate elongation of GB/T 20878 16Cr25N steel can range from 20% to 40%.
The mechanical properties of the GB/T 20878 16Cr25N steel are as follows:
| YieldRp0.2 | ≤ 937 (MPa) |
| TeileRm | ≤ 676 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 44% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 233 |
GB/T 20878 16Cr25N Material Thermal Properties
The thermal performance parameters of the GB/T 20878 16Cr25N steel are as follows:
| Temperature (°C) | 24 | 413 | 265 |
| Modulus of elasticity (GPa) | - | 422 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 43.2 |
| Specific thermal capacity (J/kg·°C) | - | 434 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 323 |
| Poisson’s coefficient, ν | - | - | 123 |
GB/T 20878 16Cr25N Material Machining Technology
The machining of GB/T 20878 16Cr25N steel requires specific cutting tools. A wide range of cutting tools such as drills, taps, reamers, and end mills can be used with this material. Drills are usually used to create the initial hole and are then followed by the tap. Reamers are often used to deburr and the finish off the hole. End mills are used to create more complicated shapes and profiles in the material.