GB/T 20878 32Cr13Mo Introduce
GB/T 20878 32Cr13Mo stainless steel is a one-piece austenitic chromium-nickel alloy, usually used in applications that require high strength, corrosion and abrasion resistance. It contains chromium, nickel and molybdenum, as well as phosphorus and sulfur, which improve its mechanical properties and resistance to oxidation and corrosion. The addition of molybdenum stabilizes the austenitic structure and increases the alloy's resistance to pitting, crevice corrosion and general corrosion.
Smelting temperature:1374°C - 1889°C
Application:Stainless steel and heat resistant steel grades and chemical composition
GB/T 20878 32Cr13Mo Material Chemical Composition
The chemical composition of the GB/T 20878 32Cr13Mo steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.8000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0400 |
| Nickel (Ni) | - | 0.6000 |
| Molybdenum (Mo) | 0.5000 | 1.0000 |
| Manganese (Mn) | - | 1.0000 |
| Chromium (Cr) | 12.0000 | 14.0000 |
| Carbon (C) | 0.2800 | 0.3500 |
GB/T 20878 32Cr13Mo Material Mechanical Properties
GB/T 20878 32Cr13Mo steel is a popular material for construction and engineering projects due to its superior mechanical properties. It has excellent strength-to-weight ratio, good levels of stiffness, ductility, and machinability, as well as excellent corrosion and wear resistance. It is also highly cost-efficient and highly recyclable.
The mechanical properties of the GB/T 20878 32Cr13Mo steel are as follows:
| YieldRp0.2 | ≤ 372 (MPa) |
| TeileRm | ≤ 971 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 241 |
GB/T 20878 32Cr13Mo Material Thermal Properties
The thermal performance parameters of the GB/T 20878 32Cr13Mo steel are as follows:
| Temperature (°C) | 43 | 728 | 845 |
| Modulus of elasticity (GPa) | - | 911 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 134 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 112 |
| Poisson’s coefficient, ν | - | - | 424 |
GB/T 20878 32Cr13Mo Material Machining Technology
The machining of GB/T 20878 32Cr13Mo steel is an important process in the manufacturing of various mechanical components and industrial products. GB/T 20878 32Cr13Mo steel is a high-quality alloy steel with a high carbon content, which makes it an excellent choice for machining and fabrication. Its high carbon content also makes it an excellent choice for parts that require strength and durability.