DIN 1651 9SMn23 Introduce
DIN 1651 9SMn23 is an unalloyed medium carbon steel that is used in automotive components and engineering applications. It is available in a variety of forms ranging from sheet, bar, and plate. The most common forms of DIN 1651 9SMn23 are cold-drawn and hot-rolled. Cold-drawn steel has a higher tensile strength compared to hot-rolled steel, but it is more difficult to machine. Cold-drawn steel should be machined at lower cutting speeds.
Smelting temperature:1241°C - 1524°C
Application:Free-cutting steels; technical delivery conditions
DIN 1651 9SMn23 Material Chemical Composition
The chemical composition of the DIN 1651 9SMn23 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Sulfur (S) | 0.2000 | 0.2700 |
| PhOsphorus (P) | 0.0350 | 0.1000 |
| Manganese (Mn) | 0.9000 | 1.3000 |
| Carbon (C) | - | 0.1300 |
DIN 1651 9SMn23 Material Mechanical Properties
The mechanical properties of the DIN 1651 9SMn23 steel are as follows:
| YieldRp0.2 | ≤ 267 (MPa) |
| TeileRm | ≤ 245 (MPa) |
| ImpactKV/Ku | 23(J) |
| ElongationA | 33% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 322 |
DIN 1651 9SMn23 Material Thermal Properties
The thermal performance parameters of the DIN 1651 9SMn23 steel are as follows:
| Temperature (°C) | 11 | 686 | 652 |
| Modulus of elasticity (GPa) | - | 163 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 32.2 |
| Specific thermal capacity (J/kg·°C) | - | 443 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 121 |
| Poisson’s coefficient, ν | - | - | 341 |