Manufacturing & Distributing Hot Rolled & Bright Steel Bar Worldwide

Carbon Key Steel – Flat

Finish: Bright Drawn


USAKEY – Carbon Key Steel – Colour: Red/Yellow
Bright: BS 46: Part 1: 1958, BS 4235: Part 1: 1972


 

Characteristics:

USAKEY is supplied in the form of Bright Drawn Steel Bars to dimensions and tolerances stipulated in BS 46: Part 1: 1958 ‘Keys and Keyways’ for imperial sizes and BS 4235: Part 1: 1972 ‘Parallel and Taper Keys’ for metric sizes. All imperial bars are supplied to the chemical analysis 0.45% Carbon maximum, 0.60/1.00% Manganese, whilst metric bars are supplied to 0.42/0.50% Carbon, 0.50/0.80% Manganese.

 

Form of Supply:

Bright bars: As drawn with a tensile strength 540-700 N/mm²

Tolerances:

Imperial Flats (plus tolerances) Width Thickness
Up to and incl. 3/4 x 1/2” +.002” +.003”
1 x 3/4 “and 1.1/4 x 7/8” +.003” +.004”
1.1/2 x 1” +.004” +.006”

 

Metric Flats (minus tolerances)   Width Thickness
8mm x 7mm Up to and incl. 10mm x 8mm -.036mm -.090mm
Over 10mm x 8mm Up to and incl. 16mm x 10mm -.043mm -.090mm
  18mm x 11mm -.043mm -.110mm
Over 18mm x 11mm Up to and incl. 28mm x 16mm -.052mm -.110mm
  32mm x 18mm -.062mm -.110mm
Over 32mm x 18mm Up to and incl. 50mm x 28mm -.062mm -.130mm

 

Stocked sizes – Flats – Inches

  1/4 7/16 1/2 3/4 7/8 1
3/8 x          
5/8   x        
3/4     x      
1       x    
1.1/4         x  
1.1/2           x

 

Stocked sizes – Flats – mm

  7 8 9 10 11 12 14 16 18 20 22 25 28
8 x                        
10   x                      
12   x                      
14     x                    
16       x                  
18         x                
20           x            
22             x            
25             x            
28               x          
32                 x        
36                   x      
40                     x    
45                       x  
50                         x

 

Lengths – Standard bar lengths are 3/3.5 metres


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