GB/T 20878 022Cr18Ni15Mo3N Introduce

GB/T 20878 022Cr18Ni15Mo3N Stainless Steel is a type of austenitic chromium-nickel stainless steel widely used for various industrial and mechanical systems. It is composed mainly of iron, chromium, nickel and molybdenum. Its unique combination of properties provides a number of advantages, including corrosion and abrasion resistance, superior strength and ductility, and excellent thermal conductivity. These properties make it suitable for many industrial and mechanical applications, such as automobile exhaust systems, medical equipment, power plants, and domestic appliances such as refrigerators and washing machines.

Smelting temperature:1846°C - 1229°C

Application:Stainless steel and heat resistant steel grades and chemical composition

GB/T 20878 022Cr18Ni15Mo3N Material Chemical Composition

The chemical composition of the GB/T 20878 022Cr18Ni15Mo3N steel are as follows:

ElementMinMax
Silicon (Si)-1.0000
Sulfur (S)-0.0100
PhOsphorus (P)-0.0250
Nickel (Ni)14.000016.0000
Nitrogen (N)0.10000.2000
Molybdenum (Mo)2.35004.2000
Manganese (Mn)-2.0000
Copper (Cu)-0.5000
Chromium (Cr)17.000019.0000
Carbon (C)-0.0300

GB/T 20878 022Cr18Ni15Mo3N Material Mechanical Properties

The mechanical properties of GB/T 20878 022Cr18Ni15Mo3N 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 022Cr18Ni15Mo3N 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 022Cr18Ni15Mo3N steel are as follows:

YieldRp0.2 ≤ 344 (MPa)
TeileRm≤ 391 (MPa)
ImpactKV/Ku44(J)
ElongationA21%
Reduction in cross section on fractureZ23%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)431

GB/T 20878 022Cr18Ni15Mo3N Material Thermal Properties

The thermal performance parameters of the GB/T 20878 022Cr18Ni15Mo3N steel are as follows:

Temperature (°C)14622518
Modulus of elasticity (GPa)-918-
Mean coefficient of thermal expaion ×10-6/(°C)--21
Thermal conductivity (W/m·°C)-41.344.2
Specific thermal capacity (J/kg·°C)-144-
Specific electrical resistivity (Ω mm²/m)0.31--
Deity (kg/dm³)--321
Poisson’s coefficient, ν--241

GB/T 20878 022Cr18Ni15Mo3N Material Machining Technology

The machining of GB/T 20878 022Cr18Ni15Mo3N steel is an important process in the manufacturing of various mechanical components and industrial products. GB/T 20878 022Cr18Ni15Mo3N 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.