GB/T 5216 20CrNi3H Introduce
GB/T 5216 20CrNi3H steel is a type of alloy steel that is mainly used in construction and manufacturing. It is a low-alloy ferritic steel, composed mainly of iron, chromium and carbon. It is used to produce various structural components, such as fasteners, drill bits and springs. This material is known for its superior strength, toughness and corrosion resistance; however, it can be susceptible to corrosion if not properly maintained.
Smelting temperature:1711°C - 1134°C
Application:Guaranteed hardenable structural steel
GB/T 5216 20CrNi3H Material Chemical Composition
The chemical composition of the GB/T 5216 20CrNi3H steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1700 | 0.3700 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
| Nickel (Ni) | 2.7000 | 3.2500 |
| Manganese (Mn) | 0.3000 | 0.6500 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | 0.6000 | 0.9500 |
| Carbon (C) | 0.1700 | 0.2300 |
GB/T 5216 20CrNi3H Material Mechanical Properties
The mechanical properties of GB/T 5216 20CrNi3H steel are incredibly important for engineers, manufacturers, and other industries that depend on its strength and durability. GB/T 5216 20CrNi3H steel is a type of high-strength low-alloy steel that has been developed for use in a range of applications, from construction to automotive and aerospace engineering. The mechanical properties of this steel have been established through a variety of tests, including hardness tests, tension tests, fatigue tests, and more. These tests have been designed to ensure optimum strength and performance in a variety of situations.
The mechanical properties of the GB/T 5216 20CrNi3H steel are as follows:
| YieldRp0.2 | ≤ 387 (MPa) |
| TeileRm | ≤ 991 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 44% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 124 |
GB/T 5216 20CrNi3H Material Thermal Properties
The thermal performance parameters of the GB/T 5216 20CrNi3H steel are as follows:
| Temperature (°C) | 23 | 423 | 419 |
| Modulus of elasticity (GPa) | - | 513 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 322 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 322 |
| Poisson’s coefficient, ν | - | - | 344 |
GB/T 5216 20CrNi3H Material Machining Technology
GB/T 5216 20CrNi3H steel is a variety of steel developed by the China Iron and Steel Association in order to meet the increasing demand for modern steel production in China. GB/T 5216 20CrNi3H is created by a process of alloying, which involves combining different metal elements to create a steel with desired properties. GB/T 5216 20CrNi3H steel is commonly used in the production of automobile parts, nuts and bolts, bridges, marine and industrial components, and in the production of bearings for machinery. Due to its high strength and hardenability, GB/T 5216 20CrNi3H steel is especially suitable for the machining of relatively high-strength components