SCR420** form: plates, rods, tubes, steel strips, wires, forgings, forging pipes, forging plates, forging rods, round bars, plates, thin plates, seamless pipes, welded pipes, round bars, wires, steel plates, disc rounds, strips.
Grade: SCR420
Corresponds to JIS G 4053-2003
Low-alloy steel for mechanical construction.
alloy steel plate for machinery
Classified as alloy steel.
Tags: Alloy structural steel, hot-rolled, cold-rolled strip (nippon).
Description Nippon Steel is available for this grade of hot-rolled and cold-rolled strip. It is used to make chains and rocker arms.
This standard applies to alloy steel for machinery manufacturing, through hot rolling, hot forging, cutting, cold drawing and other processing, as well as hot rolling, quenching, tempering, carburizing and hardening and other treatments.
The international standards corresponding to this standard are listed below:
ISO 683-1 Heat-treated, alloyed and free-cutting steels – Part 1: Direct quenching of unalloyed and low-alloy forged steels;
ISO 683-11 Heat-treated, alloyed, and free-cutting steels – Part 11: Case-hardened forged steels.
The mechanical properties of each grade of materials refer to the mechanical properties of the corresponding grades in the standards JIS G 4102, G 4103, G 4104, G 4105 and G 4106-1979.
SCR420 chemical element composition content (%)
I. Introduction. SCR420, with its superior strength, toughness and corrosion resistance, plays a vital role in many key areas.
2. Background.
SCR420 is a widely used steel grade with elements such as chromium, manganese and carbon. Its unique chemical composition and manufacturing process make it have excellent comprehensive properties, such as high strength, good wear resistance and corrosion resistance.
3. Detailed introduction.
1.Performance characteristics: SCR420 can still maintain excellent strength and toughness at high temperatures, making it perform well in high temperature environments. In addition, its good wear and corrosion resistance makes it a wide range of applications in many key fields.
2.Applications: SCR420 is widely used in petrochemical, marine engineering, aerospace, automobile manufacturing and other fields. Its outstanding performance makes it play a vital role in these areas.
3.Manufacturing process: The manufacturing process of SCR420 includes steps such as steelmaking, rolling, heat treatment, etc. By precisely controlling these steps, it is possible to produce alloy steels with specific properties.
Fourth, the introduction of parameter data.
1.Chemical composition (weight percentage): Chromium (approx. 1.)8-2.5%), manganese (about 15-2.0%), carbon (about 0.).6-0.9%), silicon (about 0.3-0.6%), phosphorus (0.).03%), sulfur (0.03%), etc.
2.Mechanical properties: tensile strength (b, mpa) 685;Yield strength ( s, mpa ) 376;Elongation (δ, 9;Work of shock absorption (AKV, J) 47.
3.Corrosion resistance: SCR420 has good corrosion resistance and is able to remain stable in various corrosive environments.
4.Heat treatment: quenching temperature is 880 15 , keep warm for 3 hours, cool to oil or water for tempering treatment. The tempering temperature is 780 15 , keep warm for 6 hours, and cool to room temperature.
5.Density: 785g cm, with which correlated calculations and measurements can be made.
5. Describe the application scenario vividly.
In the field of marine engineering, SCR420 is an essential material. For example, part of the bridge is made using this alloy steel, which can withstand salt and microbial corrosion in seawater while maintaining sufficient strength and toughness. It demonstrates excellent performance and stability in harsh environments.
VI. Conclusions. With its superior performance and wide range of uses, SCR420 plays a vital role in many key areas. By gaining a deeper understanding of its background, details, parametric data, and application scenarios, we can better understand this important metal material and leverage its advantages in practical applications.