DIN 17212 42Cr4 Introduce
DIN 17212 42Cr4 is one of the few steel grades that provide excellent corrosion resistance and wear protection. The alloy has excellent corrosion resistance and is particularly resistant to both acidic and alkaline environments. Its excellent wear protection is attributed to the high strength and the formation of a thin protective surface layer which prevents the material from corroding or breaking down.
Smelting temperature:1926°C - 1887°C
Application:Flame and Induction Hardening Steels; Quality Specifications
DIN 17212 42Cr4 Material Chemical Composition
The chemical composition of the DIN 17212 42Cr4 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1500 | 0.4000 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0250 |
| Manganese (Mn) | 0.5000 | 0.8000 |
| Chromium (Cr) | 0.9000 | 1.2000 |
| Carbon (C) | 0.3800 | 0.4400 |
DIN 17212 42Cr4 Material Mechanical Properties
The mechanical properties of DIN 17212 42Cr4 steel depend heavily on the specific grade and type, as well as the way it is heat treated. Generally speaking, however, the steel offers improved resistance to stress or strain and can deliver excellent elastic properties. For example, DIN 17212 42Cr4 steel can deliver up to 20 percent elongation when subjected to an appropriate treatment. It is also highly resistant to wear and tear, with many grades able to last for years even under the harshest use.
The mechanical properties of the DIN 17212 42Cr4 steel are as follows:
| YieldRp0.2 | ≤ 178 (MPa) |
| TeileRm | ≤ 839 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 243 |
DIN 17212 42Cr4 Material Thermal Properties
The thermal performance parameters of the DIN 17212 42Cr4 steel are as follows:
| Temperature (°C) | 31 | 218 | 129 |
| Modulus of elasticity (GPa) | - | 123 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 11 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 212 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 123 |
| Poisson’s coefficient, ν | - | - | 233 |
DIN 17212 42Cr4 Material Machining Technology
DIN 17212 42Cr4 steel is a medium carbon steel alloy with excellent mechanical and machining properties. It favorably combines strength and formability, while demonstrating good corrosion resistance. This steel is extremely durable, with a tensile strength of 620 to 800 MPa, which makes it ideal for applications requiring heavy-duty components. Additionally, its ability to stretch up to 1% before fracturing rivals many higher strength steels. DIN 17212 42Cr4 steel also has good machinability, with a relatively low fatigue strength and good dimensional stability.