Carbon Steels

US $200.00



Carbon Steels are those with relatively more carbon than electrical steels. They are grouped into low carbon steels (usually 0.05% to 0.3% C) and industrial steels (with more than 0.3%C).  This folder also contains magnetic properties of both mild steels and industrial steels.  It includes a variety of  10xx series steels, 4340, HSLA, tool steels etc in cold/hot rolled, annealed/ un-annealed conditions. It also lists six grades of pure iron (ie. carbon removed as much as possible, so has higher permeability and does not suffer from aging). 

These steels are very lossy above ~ 5 Hz. So they are used mostly in applications that carry large flux at low flux densities and frequencies. These include rotors, pole pieces, solenoids, actuators, lifting magnets etc.   They are more ductile and machinable than electrical steels. Because of higher carbon content, they are prone to aging.  Their magnetic properties can vary with manufacturer, heat, form and annealing. They are available as sheets, rods, tubes etc in fully annealed or hardened condition.

Version 6 stores both B(H) and Core Loss properties of each grade in a single excel file.   MagWeb’s Carbon Steel Folder has 143 grades of carbon steels.  They contain 140 B(H) magnetization data sets and 3 core loss data sets.  For names of all these grades, please click on SMAG – Materials.  

Data in Version 6 also exploited a novel data smoother. It is not unusual for measured data to be rough. Rough data can slow solution convergence.  To prevent such slowdown, MagWeb locates all rough spots in all raw data and spot-cleans them.  Version 6 also extrapolated all smoothed data to saturation. You can download Saturation Flux Density Js of thousands of Grades from SMAG – Materials link.

By downloading this folder you will have 143 files on magnetic properties of low carbon steels produced worldwide at your finger tips!

Please review the SMAG – Handbook for more technical information on these materials. The version 6 contains several less-known facts on magnetic properties of these steels; they will help you to better utilize these materials for magnetic purpose. 

This website is designed for instant download of Folders (containing magnetic property files) via credit card. If you wish to purchase via quote/purchase order, please email to


Additional information


Image, Excel