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Deformed Steel Bars

ASTM 615

Table 1:Deformed Bars Designation Numbers, Nominal Weights[Masses], Nominal Dimensions, and Deformation Requirements

Bar Designation No. A Nominal weight, lb/ft Nominal Dimensions 8 Deformation Requirements, in. [mm]
Nominal kg/m) Diameter in [mm] Cross Sectional Area in. [mm2]2 Perimeter, in [mm] Maximum Average Spacing Minimum Average Height Maximum Gap (Chordof 12.5% of Nominal Perimeter)
3[10] 0.376[0.560] 0.375[9.5] 0.11[71] 1.178[29.9] 0.262[6.7] 0.015[0.38] 0.143[3.6]
4[13] 0.668[0.994] 0.500[12.7] 0.20[129] 1.571[39.9] 0.35018.91 0.020[0.51] 0.191[4.9]
51161 1.043[1.522] 0.625[15.9] 0.31[199] l.963[49.9] 0.437[11.l]l 0.028[0.11] 0.239[6.l]
6 [19] 1.502[2.235] 0.750[19.1] 0.44[284] 2.356[59.8) 0.525[13.3] 0.038[0.97] 0.286[7.3]
7[22] 2.044[3.042] 0.875[22.2] 0.60[387] 2.749[69.8] 0.612[15.5] 0.044[1.12] 0.334[8.5]
8[25] 2.670[3.973] 1.000[25.4] 0.79[510] 3.142[79.8] 0.700[17.8] 0.050 [1.27] 0.383[9.7]
9[29] 3.400[5.060] 1.128[28.7] 1.00[645] 3.544[90] 0.790[20.11] 0.056[1.42] 0.431[10.9]
10[32] 4.303[6.404] 1.270[32.3] 1.27[819] 3.99[101.3] 0.889[22.6] 0.06411.63] 0.487[2.4]
11[36] 5.313[7.970] 1.410[35.8] 1.56[1006] 4.43[112.5] 0.987[25.1] 0.071[1.8] 0.540[l3.7]
14[43] 7.65[11.380] 1.693[43.0] 2.25[1452] 5.32[135.1] 1.185[30.1] 0.085[2.16] 0.648[6.51]
18[57] 13.6[20.240] 2.257[57.3] 4.00[2581] 7.09[180.1] 1.580[40.1] 0.102[2.59] 0.864[21.9]

Bar numbers are based on the number of eights of an inch included in the nominal diameter of the bars [bar numbers approximate the number of millimeters of the nominal diameter of the bar] The nominal dimensions of a deformed bars are equivalent to those of a plain round bar having the same weight[mass] per foot[meter]as the deformed bar. Table 2:Tensile Requirements

>Grade401300]A Grade60[420] Grade75 [520]B
Tensile Strength, min, psi[Mpa] >70000[500] 90000[620) l00000[690]
Yield Strength, min, psi [Mpa] >40000[300] 60000[420] 75000[520]
Elongation in 8 in 1203.2[mm], min.%:
Bar Designation Number
3[10] >11 9 …
4,5[13, 16] >12 9 …
6[191] >12 9 7
7,8[22,25] >… 8 7
9,10,11[29,32,36] >… 7 6
14,18[43,57] >… 7 6

A Grade40[300] bars are furnished only in sizes 3 through 6[10 through 19] 8 Grade 75[520] bars are furnished only in sizes 6through 18[19 through 57]

Bar Designation Number Pin Diameter for Bend Tests3
Grade 40[300] Grade 60[420] Grade 75[520]
3,4,5[10,13,16] 3½ dB 3½ dB …
6[19] 5d 5d 5d
7,8[22,25] … 5d 5d
9,10,11[ 29,32,36] … 7d 7d
14,18[43,57](90) … 9d 9d
ASTM 706

Table 3: Deformed Bars Designation Numbers, Nominal Weights[Masses], Nominal Dimensions and Deformation Requirements

Bar Designation No.A Nominal Weight,lb/ft Nominal Mass,kg/m) Nominal Dimensions 8 Deformation Requirements,in [Mm]
Diameter in.[mm] Cross Sectional Area in.2[mm] Perimeter, in[mm] Maximum Average Spacing Minimum Average Height Maximum Gap(Chord of 12.5% of Nominal Perimeter)
3[10) 0.376[0.560] 0.375[9.5] 0.11[71] 1.178[29.9] 0.262[6.7] 0.015[0.38] 0.143(3.6]
4[13] 0.668[0.994] 0.500[12.7] 0.20[129] 1.571[39.9] 0.350[8.9] 0.020[0.51] 0.191[4.9]
5[16] 1.043[1.522] 0.625[15.9] 0.31[199] 1.963[49.9] 0.437[11.1] 0.028[0.71] 0.239[6.1]
6[19] 1.502[2.235] 0.750[19.1] 0.44[284] 2.356[59.8] 0.437[11.1] 0.038[0.97] 0.286[7.3]
7[22] 2.044[3.042] 0.875[22.2] 0.60[387] 2.749[69.8] 0.612[15.5] 0.044[1.12] 0.334[8.5]
8[25] 2.670[3.973] 1.000[25.4] 0.79[510] 3.142[79.8] 0.700[17.8] 0.050[1.27] 0.383[9.7]
9[29] 3.400[5.060] 1.128[28.7] 1.00[645] 3.544[90] 0.790[20.1] 0.056[1.42] 0.431[10.9]
10[32] 4.303[6.404] 1.270[32.3] 1.27[819] 3.99(101.3] 0.889[22.6] 0.064[1.63] 0.487[12.4]
11[36] 5.313[7.970] 1.410[35.8] 1.56[1006] 4.43[112.5] 0.987[25.1] 0.071[1.81] 0.540[13.7]
14[43] 7.65[11.380] 1.693[43.0] 2.25[1452] 5.32[135.1] 1.185[30.1] 0.085[2.16] 0.648[16.5 ]
18[57] 13.6[20.240] 2.257[57.3] 4.00[2581] 7.09[180.1] 1.580[40.1] 0.102[2.59] 0.864[21.9]

ABar numbers are based on the number of eights of an inch included in the nominal diameter of the bars[bar numbers approximate the number of millimeters of the nominal diameter of the bar] BThe nominal dimensions of a deformed bars are equivalent to those of a plain round bar having the same weight [mass]per foot [meter] as the deformed bar. Table 4:Tensile Requirements

Grade60[420]
Tensile Strength, min psi[Mpa] 80000[550]
Yield Strength, min psi[Mpa] 60000[420]
Elongation in 8in[203.2mm],min.%:
Bar Designation Number
3,4,5,6 [10,13,16, 19] 14
7,8,9,10,11 [22,25,29,32,36] 12
14,18[43,57] 10

Table 5: Bend Test Requirements

Bar Designation Number Pin Diameter for Bend Tests
Grade60
(420)
3,4,5[10,13,16] 3d
6,7,8[19,22,25] 4d
9,10,11[29,32,36] 6d
14,18[43,57] 8d
BS 4449

Table 6:Cross Sectional area and mass

Nominal Size Cross Sectional Area mm2 Mass per Meter > Run kg/m Mass per Foot Run gram/ft
61 28.3 0.222 67.67
8 50.3 0.395 120.40
10 78.5 0.616 187.76
12 113.1 0.888 270.66
16 201.1 1.579 481.28
20 314.2 2.466 751.64
25 490.9 3.854 1174.70
32 804.2 3.854 1924.20
40 1256.6 9.864 3006.55
501 1963.5 15.413 4697.88

This is a non-preferred size

Nominal Size mm Tolerance on Mass per Meter Run %
6 ±9
8 and 10 ±6.5
12 and over ±4.5
Cast Analysis
Element Grade250 %(max.) Grade460 %(max.)
Carbon 0.25 0.25
Sulphur 0.060 0.050
Phosphorous 0.060 0.050
Nitrogen 0.012 0.012

NOTE 1: The maximum value for nitrogen does not apply if the chemical composition shows a minimum aluminum content of 0.020% Or if sufficient other nitrogen binding elements are present. NOTE 2: Nitrogen content is not normally given on a release certificate. Table 8: Physical Properties of Steel Grades.

Grade Yield Strength Rk1N/mm2 Stress Ration Rm/Rg2(min.) Elongation at Fracture A5(min.) % Total elongation at maximum force Agt3(min.)%
250 250 1.15 22 –
460A’ 460 1.05 12 2.5
460B’ 460 1.08 15 5
FF Steel Production Range
Sooter mm
3”’ 10mm
4”’ 12mm
5”’ 16mm
6”’ 20mm
7”’ 22mm
8”’ 25mm
9”’ 28mm
10”’ 32mm
11”’ 36mm
12”’ 40mm

1”’=3.175mm | 1inch=25.4mm | 1inch=8”’