DIN 17100 St44.3 Introduce
Smelting temperature:1477°C - 1285°C
Application:Ordinary structural steel
DIN 17100 St44.3 Material Chemical Composition
The chemical composition of the DIN 17100 St44.3 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Aluminum (Al) | 0.0200 | - |
| PhOsphorus (P) | - | 0.0400 |
| Sulfur (S) | - | 0.0400 |
| Carbon (C) | - | 0.2000 |
DIN 17100 St44.3 Material Mechanical Properties
DIN 17100 is a series of standards compiled by the German Institute for Standardisation. This series specifies the mechanical properties of steels used for the fabrication of welding and structural components in construction and engineering industries. Steel grades covered by this standard include St37, St44, St52 and other similar grades, which are commonly used in a multitude of applications.
The mechanical properties of the DIN 17100 St44.3 steel are as follows:
| YieldRp0.2 | ≤ 977 (MPa) |
| TeileRm | ≤ 132 (MPa) |
| ImpactKV/Ku | 31(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 221 |
DIN 17100 St44.3 Material Thermal Properties
The thermal performance parameters of the DIN 17100 St44.3 steel are as follows:
| Temperature (°C) | 22 | 346 | 326 |
| Modulus of elasticity (GPa) | - | 618 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 113 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 122 |
| Poisson’s coefficient, ν | - | - | 242 |
DIN 17100 St44.3 Material Machining Technology
When machining DIN 17100 St44.3 steel, it is important to use the proper tools and techniques in order to avoid damage to the material. The first tip is to use high-quality cutting tools that are specifically designed for the material in question. This will ensure a clean, precise cut without the risk of breaking or chipping the material. Additionally, it is important to use coolant when machining the material, as this will help to reduce heat and friction, as well as prevent the build-up of dust and debris. Finally, it is important to use a slow feed rate when machining, as this will help to reduce the risk of chatter.