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High Strength Low Alloy
High Strength Low Alloy
High Strength Low Alloy

High Strength Low Alloy Steel

High strength low alloy steel is a kind of engineering structure steel, its main feature is to add a small amount of alloying elements on the basis of low carbon steel, such as Mn, Si and trace amounts of Nb, V, Ti, Al, etc., so that its rolled or normal yield strength of more than 275 MPa.
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Introduction
Product Introduction

High strength low alloy steel is a kind of engineering structure steel, its main feature is to add a small amount of alloying elements on the basis of low carbon steel, such as Mn, Si and trace amounts of Nb, V, Ti, Al, etc., so that its rolled or normal yield strength of more than 275 MPa. The total amount of alloying elements in this steel does not exceed 3%, and its high strength characteristics are relative to carbon engineering structural steel.
Its rolling process includes pre-rolling, rough rolling, middle rolling and finishing rolling, each step is carefully controlled to ensure that the steel reaches the required thickness, width, length and flatness. Because of its high strength, high toughness, high wear resistance and corrosion resistance, it has a wide range of applications in modern industrial production, including automobile manufacturing, construction, shipbuilding and electronic equipment.

HSLA Steel Sheets Figure
Classification
Weathering steel
Also known as COR-TEN steel, is a low alloy steel series between ordinary steel and stainless steel, with a carbon content of less than 0.2 percent by weight.
Control-rolled steel
It is a rolling method to improve the strength, toughness and other comprehensive properties of hot-rolled steel by using process measures such as strengthened pressing and controlled cooling under the condition of slightly lower than the conventional rolling temperature.
Pearlite-reduced steels
Low carbon content steels which lead to little or no pearlite, but rather a very fine grain ferrite matrix. It is strengthened by precipitation hardening.
Acicular ferrite steel
It is also a type of HSLA steel, which has excellent mechanical properties, especially toughness. It is mainly due to its chain structure, and can effectively prevent the expansion of cracks.
Dual-phase steel
Also known as multiphase steel, is composed of martensite, austenite or bainite and ferrite matrix two-phase structure of steel. It is usually obtained by low carbon steel or low alloy high strength steel after critical zone heat treatment or controlled rolling.
Microalloyed steel
It is a steel with trace alloying elements (mainly strong carbide forming elements, such as Nb, V, Ti, Al, etc.) added to the chemical composition of ordinary mild steel and ordinary high-strength low-alloyed steel matrix.
Specification
Product Specification

 

 

Spec A36/A572/CSAG40.21/A709/M270/A588/A606/A871/A656/A573/A283/A633,etc.
Grade 50W/50/44W/HPS 50W/70W/60/65/58/80/100,etc.
Certification ASTM/CSA G40.21/AASHTO,etc.
Dimensions T:0.8~10mm/ W:Up to 1600mm
Feature
Advantageous Features
High strength and hardness
It contains higher alloying elements, which can change the crystal structure of steel, so that it has a more uniform structure and higher strength. This makes the alloy steel withstand high pressure and high temperature environment, can maintain excellent mechanical properties, not easy to deformation or fracture. At the same time, its hardness is also high, can resist various forms of physical impact and wear.
Excellent wear resistance
Due to its high hardness and good toughness, High Quality Alloy Steel performs well when subjected to alternating loads and friction and wear. This wear resistance makes alloy steel an ideal material for manufacturing parts and tools that need to withstand high frequencies of friction and wear.
Excellent high temperature performance
Some alloy steel added such as molybdenum, vanadium and other alloying elements, these elements can effectively improve the high temperature strength of steel. Therefore, this alloy steel can still maintain its mechanical properties and stability at high temperatures, and is not prone to deformation or melting, which is very suitable for parts manufacturing in high temperature working environments.
Good corrosion resistance and oxidation resistance
Some alloying elements in this steel (such as chromium, nickel, etc.) can form a dense oxide layer, effectively resisting oxidation and corrosion. This allows the alloy steel to maintain its performance and life in harsh environments.
Good processing performance
Although HSLA Steel has high hardness and strength, through appropriate heat treatment and process control, it can still maintain good processing performance to meet the processing needs of various complex parts.
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