GB/T 20878 06Cr18Ni11Ti Introduce
GB/T 20878 06Cr18Ni11Ti steel is a high strength steel used in a variety of applications. It has a high carbon content and low alloy elements, which provides excellent mechanical properties. Additionally, the steel has excellent corrosion resistance, making it suitable for a variety of uses. Additionally, welding this material is relatively easy due to its low carbon content and high toughness.
Smelting temperature:1553°C - 1914°C
Application:Stainless steel and heat resistant steel grades and chemical composition
GB/T 20878 06Cr18Ni11Ti Material Chemical Composition
The chemical composition of the GB/T 20878 06Cr18Ni11Ti steel are as follows:
| Element | Min | Max |
|---|---|---|
| Titanium (Ti) | 0.4000 | 0.7000 |
| Chromium (Cr) | 17.0000 | 19.0000 |
| Nickel (Ni) | 9.0000 | 12.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | - | 2.0000 |
| Silicon (Si) | - | 1.0000 |
| Carbon (C) | - | 0.0800 |
| PhOsphorus (P) | - | 0.0450 |
| Silicon (Si) | - | 0.7500 |
| Titanium (Ti) | 0.4000 | - |
| Nitrogen (N) | - | 0.1000 |
| PhOsphorus (P) | - | 0.0350 |
| Titanium (Ti) | - | 0.7000 |
| Titanium (Ti) | - | 0.7000 |
| Sulfur (S) | - | 0.0200 |
| Titanium (Ti) | - | 0.7000 |
| Titanium (Ti) | - | 0.7000 |
GB/T 20878 06Cr18Ni11Ti Material Mechanical Properties
The mechanical properties of GB/T 20878 06Cr18Ni11Ti steel depend largely on its chemical composition. Generally, the higher the carbon content and low alloy levels means higher toughness and strength.GB/T 20878 06Cr18Ni11Ti grades ranging from 0.3 to 2.5 percent carbon are considered to have excellent mechanical properties. Higher levels of carbon increase strength, but also reduce ductility and toughness.
The mechanical properties of the GB/T 20878 06Cr18Ni11Ti steel are as follows:
| YieldRp0.2 | ≤ 194 (MPa) |
| TeileRm | ≤ 385 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 442 |
GB/T 20878 06Cr18Ni11Ti Material Thermal Properties
The thermal performance parameters of the GB/T 20878 06Cr18Ni11Ti steel are as follows:
| Temperature (°C) | 21 | 723 | 172 |
| Modulus of elasticity (GPa) | - | 844 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 432 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 423 |
| Poisson’s coefficient, ν | - | - | 131 |
GB/T 20878 06Cr18Ni11Ti Material Machining Technology
The machining of GB/T 20878 06Cr18Ni11Ti steel requires specific cutting tools. A wide range of cutting tools such as drills, taps, reamers, and end mills can be used with this material. Drills are usually used to create the initial hole and are then followed by the tap. Reamers are often used to deburr and the finish off the hole. End mills are used to create more complicated shapes and profiles in the material.