www.kentuckyelectricsteel.com Welcome to Kentucky Electric Steel Online

Products
Metallurgical

Processes

Sizes
Grades
Major Markets
Inventory
Schedule

Home
Company

Tolerances

Hot Rolled Tolerances: Round Edge & Square Edge Flats
Thickness Tolerances for Thickness Given - Over & Under - Inches
Specified Width - (inches)
.203 to 1/4 Excl.
1/4 to 1/2 Incl.
Over 1/2 to 1 Incl.
Over 1 to 2 Incl.
Over 2 to 3 Incl.
Over 3
To 1 Inc.
.007
.008
.010
–
–
–
Over 1 to 2 Incl.
.007
.012
.015
1/32
–
–
Over 2 to 4 Incl.
.008
.012
.020
1/32
3/64
3/64
Over 4 to 6 Incl.
.009
.015
.020
1/32
3/64
3/64
Over 6 to 8 Incl.
 
.016
.025
1/32
3/64
1/14
Width Tolerance (inches)
Over
Under

• Flats over 6" to 8" in width and under .230" in thickness are not produced as Bar Flats.

•• For Bar Flats over 6" to 8" in width and over 3" in thickness, the tolerances will be negotiated.
To 1 Inc.
1/64
1/64
Over 1 to 2 Incl.
1/32
1/32
Over 2 to 4 Incl.
1/16
1/32
Over 4 to 6 Incl.
3/32
1/16
Over 6 to 8 Incl.
1/8•
3/32••

 

Permissible Variations in Sectional Dimensions
Square-Edge and Round Edge Flat Bars (SI Units)
Specified
Width - (mm)
  
Permissible Variations from Specified Width - (mm)
Over 5 to 6 Incl.
Over 6 to 12 Incl.
Over 12 to 25 Incl.
Over 25 to 50 Incl.
Over 50 to 75 Incl.
Over 75
Over
Under
To 25 Inc.
0.18
0.20
0.25
–
–
–
0.5
0.5
Over 25 to 50 Incl.
0.18
0.30
0.40
0.8
1.2
1.2
1.0
1.0
Over 50 to 100 Incl.
0.20
0.40
0.50
0.8
1.2
1.2
1.5
1.0
Over 100 to 150 Incl.
0.25
0.40
0.50
0.8
1.2
1.2
2.5
1.5
Over 150 to 200 Incl.
A
0.40
0.50
0.8
1.2
1.6
3.0
2.5

Note: When a square is held against a face and an edge of a square-edge flat bar, the edge shall not deviate by more than 3° or 5% of the thickness.

A: Flats over 150 to 200 mm, inclusive in width are not available as hot rolled bars in thickness 6 -mm and under.

 

Tolerance Table for Hot Rolled Steel Bars
Tolerances for Size and Out-of-Round or Out-of-Square
Hot Rolled Steel Bars
Round, Square and Round-Cornered Square
Specified Sizes
Size Tolerance, Inch, (mm)
Out-of-Round
Out-of-Square
Section, Inches, (mm)
Inches
(mm)
Over
Under
To 5/16 Incl.
(7.94)
0.005 (0.13)
0.005 (0.13)
0.008 (0.20)
Over 5/16 to 7/16 Incl.
(7.94 to 11.11)
0.006 (0.15)
0.006 (0.15)
0.009 (0.23)
Over 7/16 to 5/8 Incl.
(11.11 to 15.88)
0.007 (0.18)
0.007 (0.18)
0.010 (0.25)
Over 5/8 to 7/8 Incl.
(15.88 to 22.23)
0.008 (0.20)
0.008 (0.20)
0.012 (0.30
Over 7/8 to 1 Incl.
(22.23 to 25.40)
0.009 (0.23)
0.009 (0.23)
0.013 (0.33)
Over 1 to 1-1/8 Incl.
(25.40 to 28.58)
0.010 (0.25)
0.010 (0.25)
0.015 (0.38)
Over 1-1/8 to 1-1/4 Incl.
(28.58 to 31.75)
0.011 (0.28)
0.011 (0.28)
0.016 (0.41)
Over 1-1/4 to 1-3/8 Incl.
(31.75 to 34.93)
0.012 (0.30)
0.012 (0.30)
0.018 (0.46)
Over 1-3/8 to 1-1/2 Incl.
(34.93 to 38.10)
0.014 (0.36)
0.014 (0.36)
0.021 (0.53)
Over 1-1/2 to 2 Incl.
(38.10 to 50.80)
1/64 (0.40)
1/64 (0.40)
0.023 (0.58)
Over 2 to 2-1/2 Incl.
(50.80 to 63.50)
1/32 (0.79)
0
0.023 (0.58)
Over 2-1/2 to 3-1/2 Incl.
(63.50 to 88.90)
3/64 1.19)
0
0.035 (0.89)
Over 3-1/2 to 4-1/2 Incl.
(88.90 to 114.30)
1/16 (1.59)
0
0.046 (1.17)
Over 4-1/2 to 5-1/2 Incl.
(114.3 to 139.70)
5/64 (1.98)
0
0.058 (1.47)
Over 5-1/2 to 6-1/2 Incl.
(139.7 to 165.10)
1/8 (3.18)
0
0.070 (1.78)
Over 6-1/2 to 8-1/4 Incl.
(165.1 to 209.55)
5/32 (3.97)
0
0.085 (2.16)
Over 8-1/4 to 9-1/2 Incl.
(209.55 to 241.30)
3/16 (4.763)
0
0.100 (2.54)
Over 9-1/2 to 10 Incl.
(241.3 to 254.00)
1/4 (6.35)
0
0.120 (3.05)

Note 1: Out-of-Round is the difference between the maximum and minimum diameters of the bar measured t the same transverse cross section. Out-of-Square section is the difference in the perpendicular distance between opposite faces measured at the same transverse cross section.

Note 2: Tolerances shown are based upon ASTM A29.

 

home  |  products  |  company  |  history  |  schedule  |  directions  |  contact us



webmaster@kentuckyelectricsteel.com

SBCS
This site is Engineered by SBCS Incorporated.