Stock Allowances

Rounds

65-45-12, 80-55-06, G2, G2S, G2P, G2A, and G1A

Round bars are made with sufficient stock on the outside diameter to guarantee clean-up at the nominal dimensions. Stock allowance is a function of the bar diameter. Example: 3.00” + 0.118” = 3.118” tolerance is +/- 0.030” Max size = 3.148 Min size = 3.088. A 3.000” bar is guaranteed to finish at 3.000”. Stock allowances and allowable deviations for round bars are shown below.

Nominal Diameter Bar Size Gray 65-45-12 Ductile 80-55-06 Ductile 100-70-03 Ductile Ni-Resist Variation (+/-) All Grades
0.750 - 1.250" 0.085" 0.088" 0.088" 0.088" 0.088" 0.017"
1.251 - 2.000" 0.090" 0.095" 0.090" 0.090" 0.095" 0.024"
2.001 - 3.000" 0.110" 0.118" 0.113" 0.108" 0.118" 0.030"
3.001 - 3.250" 0.110" 0.136" 0.131" 0.126" 0.136" 0.038"
3.251 - 4.000" 0.125" 0.136" 0.131" 0.126" 0.136" 0.038"
4.001 - 4.500" 0.140" 0.154" 0.149" 0.144" 0.154" 0.048"
4.501 - 5.000" 0.140" 0.154" 0.144" 0.134" 0.154" 0.048"
5.001 - 6.000" 0.155" 0.172" 0.162" 0.152" 0.172" 0.055"
6.001 - 7.000" 0.170" 0.190" 0.180" 0.170" --- 0.062"
7.001 - 8.000" 0.190" 0.213" 0.203" 0.183" --- 0.085"
8.001 - 9.000" 0.216" 0.242" 0.232" 0.212" --- 0.108"
9.001 - 10.000" 0.254" 0.283" 0.273" 0.253" --- 0.129"
10.001 - 11.000" 0.400" 0.432" 0.422" --- --- 0.150"
11.001 - 16.000" 0.582" 0.623" 0.608" --- --- 0.206"
16.001 - 18.000" 0.762" 0.815" 0.795" --- --- 0.262"
18.001 - 20.000" 0.762" 0.819" 0.799" --- --- 0.262"

65-45-12X, 80-55-06X, and GX

Round bars are made with sufficient stock on the outside diameter to guarantee clean-up at the nominal dimensions. Stock allowance is a function of the bar diameter.

Diameter Mean Stock Allowance Tolerance Min. Stock Allowance Max. Stock Allowance
21.64 - 26.56" 0.980" +/- 0.500" 0.480" 1.48"

 

Rectangles

65-45-12, 80-55-06, G2, G2S, G2P, G2A, and G1A

Rectangles are made to the actual dimensions. Clean-up stock must be considered when ordering. Example: 8.00” x 21.00” will finish to 7.50” x 20.50”. Clean up stock per side is 0.250”. Minimum clean-up stock allowances are shown below.

Height Ratio (Width:Height)
0.000 - 1.999 2.000 - 2.999 3.000 - 4.999 5.000 - 7.999 8.000 & Up
0.750 - 1.500" 0.090" 0.100" 0.125" 0.188" 0.188"
1.501 - 2.500" 0.090" 0.100" 0.125" 0.188" 0.188"
2.501 - 4.000" 0.100" 0.188" 0.250" 0.250" --
4.001 - 6.000" 0.112" 0.188" 0.250" -- --
6.001 - 8.500" 0.125" 0.250" 0.250" -- --
8.501 - 11.500" 0.188" 0.250" -- -- --
11.501 - 13.999" 0.250" -- -- -- --
14.000 - 20.000" 0.500" -- -- -- --
Height 0.000 - 1.999 2.000 - 2.999 3.000 - 4.999 5.000 - 7.999 8.000 & Up
0.750 - 1.500" 0.090" 0.100" 0.125" 0.188" 0.188"
1.501 - 2.500" 0.090" 0.100" 0.125" 0.188" 0.188"
2.501 - 4.000" 0.100" 0.188" 0.250" 0.250" --
4.001 - 6.000" 0.112" 0.188" 0.250" -- --
6.001 - 8.500" 0.125" 0.250" 0.250" -- --
8.501 - 11.500" 0.188" 0.250" -- -- --
11.501 - 13.999" 0.250" -- -- -- --
14.000 - 20.000" 0.500" -- -- -- --
Height
Ratio (Width:Height)
0.000 - 1.999
2.000 - 2.999
3.000 - 4.999
5.000 - 7.999
8.000 & Up
0.750 - 1.500" 1.501 - 2.500" 2.501 - 4.000" 4.001 - 6.000" 6.001 - 8.500" 8.501 - 11.500" 11.501 - 13.999" 14.000 - 20.000"
0.090" 0.090" 0.100" 0.112" 0.125" 0.188" 0.250" 0.500"
0.100" 0.100" 0.188" 0.188" 0.250" 0.250" -- --
0.125" 0.125" 0.250" 0.250" 0.250" -- -- --
0.188" 0.188" 0.250" -- -- -- -- --
0.188" 0.188" -- -- -- -- -- --

65-45-12X, 80-55-06X

X Grades rectangles stock allowance is based on the width of the bar. Clean-up stock must be considered when ordering. Example: 20.0” x 25.60” max finish size is 19.0” x 24.6”.

Width Stock Removal Per Side
12.001 - 16.000" 0.370"
16.001 - 20.000" 0.450"
20.001 - 29.500" 0.500"

GX

X Grades rectangles are based on the width of the bar. Clean-up stock must be considered when ordering. Example: 16.0” x 28.0” max finishsize is 15.10” x 27.10”.

Width Stock Removal Per Side
0.750 - 2.000" 0.100"
2.001 - 4.000" 0.140"
4.001 - 8.000" 0.180"
8.001 - 12.000" 0.260"
12.001 - 16.000" 0.300"
16.001 - 20.000" 0.370"
20.001 - 29.500" 0.450"

Dura-Bar®
1800 West Lake Shore Drive
Woodstock, IL 60098

815-338-7800

800-BAR-MILL (227-6455)

Fax: 815-338-1549 Sales

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