90-22512, Hui'an Road, Liangxi District, Wuxi City

Q235B Q235NH Q235R Q355B Q355NH Carbon Steel Coil

They are mainly used in railways, bridges, and various construction projects to manufacture various metal components that bear static loads, and unimportant mechanical parts and general welded parts that do not require heat treatment.

Tel:+86 18018372311

Email:[email protected]

Whatsapp:8618018372311

Product Description

Carbon steel plates have many uses and a large amount. 

They are mainly used in railways, bridges, and various construction projects to manufacture various metal components that bear static loads, and unimportant mechanical parts and general welded parts that do not require heat treatment.



Specification

Thickness:0.2-500mm,etc
Width :1000-4000mm,etc
Length:2000mm, 2438mm, 3000mm, 3500,6000mm,12000mm,or rolled,etc etc
Standard:ASTM,AISI,JIS,GB, DIN,EN
Surface:Black painted,PE coated,Galvanized,color coated,
Technique:Cold Rolled, Hot Rolled
Certification:SGS,BV
price terms:FOB,CRF,CIF,EXW all acceptable
Loading port:any port in China
Packing:standard export packing (inside:water proof paper,outside:steel covered with strips and pallets)


Processing Technology Of Q235NH Carbon Steel Coil

With the development of science and technology and industry, the materials put forward higher requirements, such as higher strength, resistance to high temperature, high pressure, low temperature, corrosion resistance, wear and other special physical and chemical properties of the requirements, carbon steel has been unable to fully meet the requirements.


Deficiency of carbon steel:

(1) Low hardenability. In general, the maximum quenching diameter of carbon steel water quenching is only 10mm-20mm.

(2) Relatively low strength and buckling. For example, the σ S of ordinary carbon steel Q235 steel is 235MPa, while the σ S of low alloy structural steel 16Mn is more than 360MPa. The σ S /σ B of 40 steel is only 0.43, which is much lower than that of alloy steel.

(3) Poor tempering stability. Because of the poor tempering stability, carbon steel in the quenching and tempering treatment, in order to ensure higher strength to use a lower tempering temperature, so that the toughness of steel is low; In order to ensure better toughness, the strength of high tempering temperature is low, so the comprehensive mechanical properties of carbon steel is not high.

(4) Can not meet the requirements of special performance. Carbon steel in oxidation resistance, corrosion resistance, heat resistance, low temperature resistance, wear resistance and special electromagnetic and other aspects are often poor, can not meet the needs of special performance.


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