DIN 17100 St70.2 Introduce
Smelting temperature:1351°C - 1785°C
Application:Ordinary structural steel
DIN 17100 St70.2 Material Chemical Composition
The chemical composition of the DIN 17100 St70.2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nitrogen (N) | - | 0.0090 |
| PhOsphorus (P) | - | 0.0500 |
| Sulfur (S) | - | 0.0500 |
| Carbon (C) | - | 0.5000 |
DIN 17100 St70.2 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 St70.2 steel are as follows:
| YieldRp0.2 | ≤ 537 (MPa) |
| TeileRm | ≤ 137 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 32% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 441 |
DIN 17100 St70.2 Material Thermal Properties
The thermal performance parameters of the DIN 17100 St70.2 steel are as follows:
| Temperature (°C) | 13 | 351 | 137 |
| Modulus of elasticity (GPa) | - | 391 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 314 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 112 |
| Poisson’s coefficient, ν | - | - | 343 |
DIN 17100 St70.2 Material Machining Technology
DIN 17100 St70.2 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 St70.2 steel requires the use of specialized tools and techniques that are not always available, making the process both time-consuming and expensive.