DIN 17100 St44.2 Introduce
Smelting temperature:1333°C - 1117°C
Application:Ordinary structural steel
DIN 17100 St44.2 Material Chemical Composition
The chemical composition of the DIN 17100 St44.2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nitrogen (N) | - | 0.0090 |
| PhOsphorus (P) | - | 0.0500 |
| Sulfur (S) | - | 0.0500 |
| Carbon (C) | - | 0.2100 |
DIN 17100 St44.2 Material Mechanical Properties
The mechanical properties of DIN 17100 St44.2 steel are achieved through a combination of heat treatment and cold working. Heat treatment involves the use of either annealing or quenching and tempering, depending on the grade and material specified. Annealing involves the heating of the steel to a temperature of between 750-900 °C and then cooling it at a rate of no more than 20°C per hour, while quenching involves the cooling of steel at a much faster rate by using an oil, air or water bath. The tempering of steel also plays an important role in the mechanical properties of the material and involves the reheating of the steel to a temperature of between 550-650°C.
The mechanical properties of the DIN 17100 St44.2 steel are as follows:
| YieldRp0.2 | ≤ 355 (MPa) |
| TeileRm | ≤ 673 (MPa) |
| ImpactKV/Ku | 44(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 343 |
DIN 17100 St44.2 Material Thermal Properties
The thermal performance parameters of the DIN 17100 St44.2 steel are as follows:
| Temperature (°C) | 41 | 324 | 841 |
| Modulus of elasticity (GPa) | - | 279 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 221 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.32 | - | - |
| Deity (kg/dm³) | - | - | 311 |
| Poisson’s coefficient, ν | - | - | 314 |
DIN 17100 St44.2 Material Machining Technology
DIN 17100 St44.2 steel is an incredibly important material for many machining applications. It has an incredibly low carbon content and is extensively used in the manufacturing of modern machines and equipment, as well as in the construction and automotive industry. The machining of DIN 17100 St44.2 steel requires the use of specialized tools and techniques that are not always available, making the process both time-consuming and expensive.