EN 10084 1.7139 Introduce
EN 10084 1.7139 steel is a high-carbon alloy steel with useful properties such as a high strength-to-weight ratio, superior heat treatability and excellent corrosion resistance. This steel contains specific alloying elements such as chromium, manganese, molybdenum, nickel, silicon and vanadium. It finds applications in industries such as the automotive, agricultural and construction sectors.
Smelting temperature:1687°C - 1899°C
Application:Case hardening steels - Technical delivery conditions
EN 10084 1.7139 Material Chemical Composition
The chemical composition of the EN 10084 1.7139 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.3000 |
| Sulfur (S) | 0.0200 | 0.0400 |
| PhOsphorus (P) | - | 0.0250 |
| Manganese (Mn) | 1.0000 | 1.3000 |
| Copper (Cu) | - | 0.2500 |
| Chromium (Cr) | 0.8000 | 1.1000 |
| Carbon (C) | 0.1400 | 0.1900 |
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | 0.0200 | 0.0400 |
| PhOsphorus (P) | - | 0.0250 |
| Manganese (Mn) | 1.0000 | 1.3000 |
| Chromium (Cr) | 0.8000 | 1.1000 |
| Carbon (C) | 0.1400 | 0.1900 |
EN 10084 1.7139 Material Mechanical Properties
The mechanical properties of the EN 10084 1.7139 steel are as follows:
| YieldRp0.2 | ≤ 673 (MPa) |
| TeileRm | ≤ 438 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 122 |
EN 10084 1.7139 Material Thermal Properties
The thermal performance parameters of the EN 10084 1.7139 steel are as follows:
| Temperature (°C) | 11 | 388 | 899 |
| Modulus of elasticity (GPa) | - | 973 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 31.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 431 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 333 |
| Poisson’s coefficient, ν | - | - | 124 |