Carbon / Mild Steel: Bars

Hot Rolled Bars / Structurals


Carbon Steel Bars

    

Types

10 Series - Plain Carbon mn 1.00 Max.
11 Series - Resulphurized Carbon Steel.
12 Series - Resulphurized and rephosphorized Carbon Steel.
15 Series - Plain Carbon mn Range over 1.00 - 1.65% Max.

 

Carbon Steel
vs.
Alloy Steel

  
Manganese
Silicon
Copper
Carbon Steel:
Less than 1.65%
Less than 0.60%
Less than 0.60%
Alloy Steel:
Greater than 1.65%
Greater than 0.60%
Greater than 0.60%
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Cold Finished

    

Description

Cold finished bars have a smooth scale free surface with precise dimension and straightness. These controls make it an ideal product for structural components in precision machinery and screw machine stock. Cold finished bars have higher tensile and yield strengths than hot rolled bar and also demonstrate a high degree of machinability.
   
Surface Finish The surface of a cold finished bar is smooth, bright and free of scale. In many applications no further finishing is required and the absence of scale enhances tool life and promotes a cleaner operation.
   
Dimensional Accuracy

Exactness in size and cross section.
  Round Bar tolerance - plus and minus in inches: 
  under .313 .001  
  .313 to under .5 .0015  
  .5 to under 1 .002  
  1 to under 1.5 .0025  
  1.5 to 4 included .003  
  over 4 to 4.5 included .005  
  over 4.5 .008  
     
Straightness The precise straightness of cold finished bar enables it to be put in applications where freedom from vibration, whipping and binding are desirable, with little or no rework. The straightness tolerance for any non-heat tested cold finished bar is 3/16" over a ten foot length.
   
Mechanical Properties Show improvement by cold drawing. In comparison with hot rolled steel, cold drawn bars demonstrate higher tensile and yield strengths and higher hardness.
   
Machinability Cold drawn bars enhance machining speeds, tool life and quality finish when compared to a hot rolled product.
   
Property Pages AISI C1018
  AISI C1045
   
Sizes & Weights Round Bar
  Square Bar
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Hot Rolled / Structurals
Description Merchant Bar Quality: a low carbon hot rolled steel sometimes referred to as "soft" steel or "mild" steel. Easily welded, machined and formed, it is used for general production, repair work, machine parts, welding jobs and bracing. It is not particularly recommended for forging, heat-treating or complicated machine operations.

In producing Merchant Bar quality, only a minimum discard is made from each ingot, but bars of this quality should be free from visible piping. Seams and other surface irregularities may be present but are not objectionable for the purposes for which this quality is recommended. Chemistry is subject to ladle analysis only.
   
Sizes & Weights

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Angles
Beams
Channels

ASTM - A588 B
(Bridge Building Steel)
       
   
 
Flats
Rounds
Squares
 
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Rebar
Sizes & Weights

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Rebar
  
 

 
 
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