18crnimo7-6 is a heat-treated alloy steel with excellent mechanical properties and wear resistance, which is commonly used in the manufacture of high-strength parts. The following is a comprehensive introduction to the parameters of 18crnimo7-6:
Chemical Composition:
The chemical composition of 18CrNiMo7-6 mainly includes carbon (C), silicon (Si), manganese (Mn), sulfur (S), phosphorus (P), chromium (Cr), nickel (Ni), molybdenum (Mo) and other elements. The specific chemical composition is as follows:
Carbon content: 015-0.21%
Silicon content: 040%
Manganese content: 050-0.70%
Sulphur content: 0035%
Phosphorus content: 0035%
Chromium content: 150-1.80%
Nickel content: 140-1.70%
Molybdenum content: 025-0.35%
Mechanical Properties:
Strength: 18CrNimo7-6 has high yield strength and tensile strength after heat treatment, usually reaching 1200-1400 MPa.
Toughness: The alloy steel has good toughness and can still maintain high toughness under high strain rate conditions.
Hardness: Alloy steels can be obtained with high hardness after proper heat treatment, usually between HRC 30-36.
Physical Properties:
Density: 785 g/cm³
Thermal conductivity: 142 w/(m·k)
Coefficient of linear expansion: 117 × 10^-6/°c
Usage:
18crnimo7-6 is mainly used in the manufacture of parts that require high strength and wear resistance, such as gears, bearings, transmission shafts and other important parts. Due to its excellent mechanical properties and heat treatment properties, it is widely used in machinery manufacturing, automotive engineering, aerospace and other fields.
Categorization:
18CrNIMO7-6 belongs to heat-treated alloy steel, which belongs to medium carbon low-alloy steel according to its chemical composition and mechanical property characteristics. It has excellent strength and toughness, and is suitable for engineering parts that require high strength and wear resistance.
Corresponding standards:
18CrNIMO7-6 conforms to the international standard EN10084, and the corresponding American standard is AISI 4820.
Summary:
To sum up, 18crnimo7-6 is an excellent heat-treated alloy steel with high strength, excellent toughness and wear resistance, which is suitable for manufacturing high-strength parts. Its chemical composition, mechanical properties, physical properties, uses, classification, and corresponding standards make it one of the high-profile materials in the field of engineering.