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[MW:3886] RE: 3884] Carbon Equivalent

By Materials & Welding

The equivalent carbon content of a steel alloy refers to method of measuring the maximum hardness and the weldability of the alloy based on the chemical composition of the alloy. Higher concentrations of carbon and other alloying elements such as manganese, chromium, silicon, molybdenum, vanadium, copper, and nickel tend to increase the hardness and decrease the weldability of the material. Each of these materials tends to influence the hardness and weldability of the steel to different magnitudes, however, making a method of comparison necessary to judge the difference in hardness between two alloys made of different alloying elements. The equivalent carbon content is the most common such standard, but others exist, such as the equivalent nickel content and the equivalent chromium content (usually used together and in conjunction with the Schaeffler-Delong diagram and considered more accurate for measuring weldability).

 

Best Regards

S. Banerjee

Static equipment Dept.(Stequ)

Engineering & Design Tecnimont ICB

702, Interface-11, Link Road, Malad (West), Mumbai- 400 064

Ph. no. +91-(0)22-67777029

E-mail : S.Banerjee@ticb.com

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of desaid@toyoindia.com
Sent: Thursday, December 24, 2009 10:30 AM
To: materials-welding@googlegroups.com
Subject: [MW:3884] <Security Level 2>Carbon Equivalent

 


Dear All,

For carbon Steel specifications, it is specified as the maximum carbon content shall be 0.25% and  the maximum carbon equivalent (CE) shall be 0.43%,where CE=C%+Mn%/6+(Cr% + Mo% +V%) / 5 + (Ni% + Cu%) / 15.

Why carbon equivalent is required to specify while procurement of Carbon steel components.



Thanks & Regards,
Dhwani Desai
TOYO Engg. India Ltd.
Planning & Piping Dept.
Ext.-7681

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