alro.com
CARBON STEEL BARS
HOT ROLLED
Grade Description.................................................................3-2
Rounds......................................................................3-3 thru 3-4
Strip........................................................................................3-5
Flats
(A-36).................................................................3-6 thru 3-8
(M1044)...........................................................................3-9
Squares..................................................................................3-9
Reinforcing Bars...................................................................3-10
Reinforcing Mesh.................................................................3-10
TOLERANCES......................................................3-11 thru 3-12
Low carbon, hot rolled “mild steel” is suitable for general usage in
production and maintenance work, due to its excellent welding and
forming characteristics.
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3-1
alro.com
GRADE DESCRIPTION
HOT ROLLED CARBON BARS
Hot rolled carbon bars, often referred to as "SBQ" or "special bar quality", are known
for their superior mechanical properties over commodity grades of merchant bar.
These products are produced to specific chemistry and mechanical properties ranges
and often are used in engineered applications such as gears, shafts, axles covering
markets such as automotive, heavy truck and agricultural equipment.
CQ or Commercial Quality Steel is ordinarily produced from a low carbon steel.
Specific chemistry and mechanical properties are not inherit to CQ products.
A36 is produced to a 36 ksi min yield point. A mild carbon steel with many uses that
works well for fabricating, welding, bending and cold forming.
1018 is a general purpose low carbon steel with good case hardening qualities.
It is especially suited to cold forming and bending operations and has excellent
weldability.
1044 is a medium carbon steel used when greater strength is needed. Has good heat
treating properties when induction or flame hardened.
1045 is a medium carbon steel used extensively in induction hardening applications.
This is not normally considered a screw machine steel and is only fair for brazing and
welding. 1045 hot rolled can be used for applications requiring more strength and
wear resistance than the low carbon mild steels can provide.
1117 is a low carbon, high manganese steel. Machinability is improved over 1018
and case hardening is deep and uniform, supported by a tough ductile core. A free
machining grade with improved mechanical properties suitable for carburized parts.
1141 is a medium carbon, special quality, manganese steel with improved
machinability and better heat treatment response. Surface hardness is deeper and
more uniform than plain carbon steels.
1144 is a resulphurized carbon steel containing manganese and sulphur to provide
a free-machining steel. It is recommended especially for high-production automatic
machine products and machined parts requiring higher strength and wear resistance
than is possible with lower carbon steels.
3-2
alro.com
HOT ROLLED ROUNDS
STOCK LENGTH 20'
A36, 1018, 1045, 1117, & 1144 grades available.
Diameter
(inches)
Weight
CQ
A-36 1018 1045 1117
1141 1144
(per ft.) 3/16
.094
X
1/4
.167
X
X 5/16
.260
X
X
3/8
.375
X
X
7/16
.510
X
X
1/2
.670
X
X
9/16.850X
5/81.040X X
3/41.500X X
7/82.050X X
1 2.670X X
1-1/8
3.380X X
1-1/4
4.170X X
1-3/8
5.050X X
1-1/2
6.010X X
1-5/8
7.050X X
1-3/4
8.180X X
1-7/8
9.390X X
2 10.680X XX
2-1/8
12.234X X
2-1/4
13.704X XX
2-3/8
15.258X X
2-1/2
16.896X XX
2-5/8
18.724X X
2-3/4
20.533X XX
2-7/8
22.426X X
3 24.645 X XXXX
3-1/8 26.717
X
X
3-1/4
28.872 X XXXX
3-3/8 31.111
X
X
3-1/2 33.434
X
X
X
X
X
3-5/8 36.070
X
X
3-3/4
38.568 X XXXX
4 43.814 X XXXX
4-1/8 46.562
X
X
4-1/4
49.394 X XXXX
4-3/8 52.310
X
X
4-1/2
55.309 X XXXX
4-5/8
58.685X
4-3/4
61.859 X XXXX
Continued on next page 
3-3
alro.com
HOT ROLLED ROUNDS
STOCK LENGTH 20'
A36, 1018, 1045, 1117, & 1144 grades available.
Diameter
Weight CQ
A-36 1018 1045 1117
1141 1144
(inches)
(per ft.)
5
68.459
X
X
X
X
X
5-1/4
75.393
X
XXX
X
5-1/2
82.661
X XXXX
5-3/4
91.359
X XXXX
6
99.343
X
X
X
X
X
6-1/4
107.662
X
X
X
X
6-1/2
116.315
X XXXX
6-3/4
126.162
X
X
X
X
7
135.515
X
X
X
X
X
7-1/4
145.202
X
X
X
7-1/2
155.224
X XXXX
7-3/4
165.580
X
X
X
8
176.271
X
X
X
X
X
8-1/4
187.296
X
X
X
X
8-1/2
199.737
X XXXX
8-3/4
211.463
X
X
9
223.522
X
X
X
X
X
9-1/2
245.741
X
X
X
X
X
10 276.359
X
X
X
X
X
10-1/2
305.065
X
X
X
X
X
11 331.346
X
X
X
X
11-1/2
371.645
X
X
12 399.686
X
X
X
X
12-1/2
427.936
X
X
13
469.106
3-4
alro.com
HOT ROLLED STRIP
B. W. Gauge
& Size
Pounds
(per ft.)
Stock
Lengths
B. W. Gauge
& Size
Pounds
(per ft.)
Stock
L
engths
1/8 x 3/16 x
3/8
.159
20' 3/8
.239
20'
1/2
.210
20' 1/2
.320
20'
5/8
.270
20' 5/8
.400
20'
3/4
.320
20' 3/4
.480
20'
7/8
.370
20' 7/8
.557
20'
1
.430
20' 1
.640
20'
1-1/8
.480
20' 1-1/8
.720
20'
1-1/4
.530
20' 1-1/4
.800
20'
1-3/8
.590
20' 1-3/8
.880
20'
1-1/2
.640
20' 1-1/2
.960
20'
1-3/4
.740
20'
1-3/4
1.120
20'
2
.850
20' 2
1.280
20'
2-1/4
.960
20' 2-1/4
1.430
20'
2-1/2
1.060
20' 2-1/2
1.590
20'
2-3/4 1.170 20' 2-3/4
1.750
20'
3
1.280
20' 3
1.910
20'
3-1/4
1.380
20' 3-1/4
2.070
20'
3-1/2
1.490
20' 3-1/2
2.230
20'
4
1.700 20' 4
2.550
20'
4-1/2
1.910
20' 4-1/2
2.870
20'
5
2.130
20' 5
3.190
20'
5-1/2 2.338 20' 5-1/2
3.510
20'
6
2.550
20' 6
3.820
20'
7
2.975
20' 7
4.460
20'
8
3.400
20' 8
5.100
20'
9
3.825
20' 9
5.730
20'
10
4.250
20' 10
6.380
20'
12
5.130
20'
12
7.650
20'
Material available in 12' lengths and available in Pickled & Oiled
Alro Steel
Metals • Industrial Supplies • Plastics
Ask your Alro Sales Representative
about our Processing Services
• Saw Cutting
• Flame Cutting
• Production/Precision Sawing
• Waterjet
• Precision Aluminum Plate Sawing
• Plate Laser
• Press Brake/Forming
• Tube Laser
• Thermal Processing
• Shearing
• Plasma
• Grinding
Contact us today and learn more about
The Alro Difference!
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(888) 888-ALRO
2576
3-5
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HOT ROLLED FLATS (A-36)
STOCK LENGTH 20'
Thicknesses 3/16" and under, see Hot Rolled Strip (p. 3-5).
Size
(inches)
Pounds
(per ft.)
1/4 x
1/2
.430
5/8
.530
3/4
.640
7/8
.750
1 .850
1-1/8
.956
1-1/4
1.060
1-3/8
1.170
1-1/2
1.280
1-5/8
1.380
1-3/4
1.490
2 1.700
2-1/4
1.910
2-1/2
2.130
2-3/4
2.330
3 2.550
3-1/4
2.760
3-1/2
2.980
3-3/4
3.190
4 3.400
4-1/4
3.610
4-1/2
3.830
5 4.250
5-1/2
4.680
6 5.100
6-1/2
5.530
7 5.950
7-1/2
6.375
8 6.800
9 7.650
10 8.500
11 9.350
11-1/2 9.870
12 10.200
5/16 x
3/4
.797
1 1.060
1-1/4
1.330
1-3/8
1.461
1-1/2
1.590
1-3/4
1.860
2 2.130
2-1/4
2.390
2-1/2
2.660
2-3/4
2.920
3
3.190
3-1/2
3.720
4
4.250
4-1/2
4.780
5 5.310
5-1/2
5.840
6
6.380
Size
(inches)
5/16 x
7
7.440
8
8.500
3/8 x
1/2
.640
5/8
.800
3/4
.960
7/8 1.120
1
1.270
1-1/4
1.590
1-3/8 1.750
1-1/2
1.910
1-5/8
2.072
1-3/4 2.230
2
2.550
2-1/4 2.870
2-1/2
3.180
2-3/4 3.500
3
3.830
3-1/4 4.140
3-1/2 4.460
3-3/4
4.780
4 5.100
4-1/2 5.740
5 6.380
5-1/2 7.010
6 7.650
6-1/2 8.290
7
8.930
7-1/2 9.560
8
10.200
9
11.480
10
12.800
11
14.025
12 15.300
14
17.850
7/16
2
2.970
1/2 x
5/8
1.060
3/4
1.280
7/8
1.490
1 1.700
1-1/8
1.910
1-1/4
2.130
1-3/8
2.340
1-1/2
2.550
1-5/8
2.760
1-3/4
2.975
2
3.400
2-1/4
3.830
2-1/2
4.250
2-3/4
4.680
Continued on next page 
3-6
Pounds
(per ft.)
alro.com
HOT ROLLED FLATS (A-36)
STOCK LENGTH 20'
Thicknesses 3/16" and under, see Hot Rolled Strip (p. 3-5).
Size
(inches)
Pounds
(per ft.)
Size
(inches)
Pounds
(per ft.)
1/2 x 3/4 x
1-3/4
4.460
3
5.100
2
5.100
3-1/4
5.530
2-1/4
5.740
3-1/2
5.950
2-1/2
6.380
4
6.800
2-3/4
7.010
4-1/2
7.650
3
7.650
5
8.500
3-1/4
8.290
5-1/2
9.350
3-1/2
8.930
6
10.200
4
10.200
6-1/2
11.060
4-1/2
11.480
7
11.900
5
12.750
7-1/2
12.750
5-1/2
14.030
8
13.600
6
15.300
9
15.300
6-1/2
16.575
10
17.000
7
17.900
11
18.700
8
20.400
12
20.400
9
22.950
14
23.800
10
25.500
5/8 x 11
28.050
3/4
1.590
12
30.600
7/8
1.870
14
35.700
1
2.130
7/8 x
1-1/4
2.660
1-1/4
3.720
1-1/2
3.190
1-1/2
4.460
1-3/4
3.720
1-3/4
5.210
2
4.250
2
5.950
2-1/4
4.780
2-1/2
7.400
2-1/2
5.310
2-3/4
8.180
2-3/4
5.840
3
8.930
3
6.380
3-1/2
10.410
3-1/4
6.910
4
11.900
3-1/2
7.440
4
8.500
4-1/2
13.390
4-1/2
9.560
5
14.88
5
10.630
6
17.850
5-1/2
11.690
7
20.830
6
12.750
8
23.800
7
14.870
1 x
8
17.000
1-1/4
4.250
9
19.130
1-1/2
5.100
10
21.250
1-3/4
5.950
11
23.375
2
6.800
12
25.500
2-1/4
7.650
14
29.750
2-1/2
8.500
3/4 x 2-3/4
9.350
1
2.550
3
10.200
1-1/8
2.870
3-1/4
11.050
1-1/4
3.190
3-1/2
11.900
1-1/2
3.830
4
13.600
Continued on next page 
3-7
alro.com
HOT ROLLED FLATS (A-36)
STOCK LENGTH 20'
Thicknesses 3/16" and under, see Hot Rolled Strip (p. 3-5).
Size
(inches)
Size
(inches)
Pounds
(per ft.)
1 x
4-1/2
15.300
5
17.000
5-1/2
18.700
6
20.400
7
23.800
8
27.200
9
30.600
10
34.000
12
40.800
14
47.600
1-1/8 x
2
7.650
3
11.480
4
15.300
1-1/4 x
1-1/2
6.380
1-3/4
7.440
2
8.500
2-1/4
9.560
2-1/2
10.630
2-3/4
11.690
3
12.750
3-1/2
14.880
4
17.000
4-1/2
19.130
5
21.250
5-1/2
23.380
6
25.500
7
29.750
8
34.000
10
42.500
1-1/2 x
1-3/4
8.925
2
10.200
2-1/4
11.480
2-1/2
12.750
2-3/4
14.030
3
15.300
3-1/4
16.580
3-1/2
17.850
4
20.400
4-1/2
22.950
5
25.500
5-1/2
28.050
6
30.600
7
35.700
8
40.800
10
51.000
1-3/4 x
2
11.900
2-1/2
14.880
3
17.850
3-1/2
20.830
4
23.800
4-1/2
26.790
5
29.750
6
35.700
2 x
2-1/4
15.300
2-1/2
17.000
3
20.400
3-1/2
23.800
4
27.200
4-1/2
30.600
5
34.000
5-1/2
37.400
6
40.800
7
47.600
8
54.400
10
68.060
12
81.600
2-1/4 x
3
22.950
4
30.600
5
38.250
2-1/2 x
3
25.500
3-1/2
29.750
4
34.000
4-1/2
38.250
5
42.500
5-1/2
46.750
6
51.000
3x
3-1/2
35.700
4
40.800
4-1/2
45.900
5
51.000
6
61.200
3-1/2x
4
47.600
6
71.400
4x
4-1/2
61.200
5
68.000
6
81.600
Continued on next page 
3-8
Pounds
(per ft.)
alro.com
HOT ROLLED FLATS (M1044)
STOCK LENGTH 20'
Size
(inches)
Pounds
(per ft.)
1/4 x
1
.850
1-1/4
1.060
1-1/2
1.275
2
1.700
3/8 x
1
1.280
1-1/4
1.590
1-1/2
1.910
2
2.550
2-1/2
3.180
3
3.830
4 5.100
5
6.380
6
7.650
1/2 x
1
1.700
1-1/2
2.550
2
3.400
2-1/2
4.250
3
5.100
4
6.800
5
8.500
6
10.200
5/8 x
2-1/2
5.310
8
17.000
3/4 x
1-1/2
3.830
2
5.100
2-1/2
6.380
3
7.650
Size
(inches)
Pounds
(per ft.)
3/4 x
3-1/2
8.930
4
10.200
4-1/2
11.475
5
12.750
6
15.300
1 x
2
6.800
2-1/2
8.500
3
10.200
4
13.600
5
17.000
6
20.400
1-1/4 x
2
8.500
3-1/2
14.880
4
17.000
5
20.250
5-1/4
23.000
6-1/4
26.550
8
34.000
1-1/2 x
3
15.300
4
20.400
5
25.500
2 x
3
20.400
4
27.200
5
34.000
6
40.800
7
47.600
HOT ROLLED SQUARES
STOCK LENGTH 20'
Size
(inches)
3/8
1/2
5/8
3/4
7/8
1
1-1/4
1-1/2
1-3/4
2
Pounds
(per ft.)
Size
(inches)
Pounds
(per ft.)
.480 2-1/4
17.210
.850 2-1/2
21.300
1.330
2-3/4 25.700
1.910 3
30.600
2.600 3-1/2
41.700
3.400
4
54.400
5.310
4-1/2
68.900
7.650
5
85.000
10.400
6
122.400
13.600
3-9
alro.com
CONCRETE REINFORCING BARS
STOCK LENGTHS 20', 40'
MATERIAL AVAILABLE IN GRADES 40 AND 60
Size
(inches)
3/8Rd.
1/2Rd.
5/8Rd.
3/4Rd.
7/8Rd.
1
Rd.
1-1/8Rd.
Bar
Number
3
4
5
6
7
8
9
Pounds
(per ft.)
.376
.668
1.043
1.502
2.044
2.670
3.379
•Round bars equal in cross sectional area to the standard square sizes indicated
Alro will deliver your Concrete Reinforcement order to your facility or job site
CONCRETE REINFORCING MESH
6 x 6 x 6 Gage x 6 Gage..................... 5’ x 150'
6 x 6 x 10 Gage x 10 Gage................. 5’ x 150’
Visit the Alro Web Site
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3-10
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alro.com
HOT ROLL STEEL BARS SIZE TOLERANCES
AND OUT-OF-ROUND OR
OUT-OF SQUARE TOLERANCES
Hot Rolled Steel Bars Round, Square, and Round-Cornered Square
Size Tolerances (inches)
Out-of-Round or
Out-of-Square
Specified Sizes (inches)
Over Under Section (inches)
1/2 thru 5/8
0.007
0.007
0.010
Over 5/8 thru 7/8
0.008
0.008
0.012
Over 7/8 thru 1
0.009
0.009
0.013
Over 1 thru 1-1/8
0.010
0.010
0.015
Over 1-1/8 thru 1-1/4
0.011
0.011
0.016
Over 1-1/4 thru 1-3/8
0.012
0.012
0.018
Over 1-3/8 thru 1-1/2
0.014
0.014
0.021
Over 1-1/2 thru 2
1/64
1/64
0.023
Over 2 thru 2-1/2
1/32
0
0.023
Over 2-1/2 thru 3-1/2
3/64
0
0.035
Over 3-1/2 thru 4-1/2
1/16
0
0.046
Over 4-1/2 thru 5-1/2
5/64
0
0.058
Over 5-1/2 thru 6-1/2
1/8
0
0.070
Over 6-1/2 thru 8-1/4
5/32
0
0.085
Over 8-1/4 thru 9-1/2
3/16
0
0.100
Over 9-1/2 1/4
0
0.120
Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same transverse cross section. Out-of-square section is the difference in perpendicular distance between opposite faces, measured at the same transverse cross section.
Besides carrying materials in standard stock lengths, Alro provides a
variety of processing services that allow customers to order materials
pre-cut to size.
3-11
3-12
.007
.008
.009
*
Over 1 thru 2
Over 2 thru 4
Over 4 thru 6
Over 6 thru 8
.015
.009
.008
.007
.007 0.230 up
to 1/4
.018 .015
.015
.012
.008 1/4 thru
1/2
.025
.020
.020
.015
.010
Over 1/2
thru 1
1/32
1/32
1/32
1/32
. . . .
Over 1
thru 2
3/64
3/64
3/64
. . . .
. . . .
Over 2
thru 3
•Where ". . . ." appears there is no requirement.
*Flats over 6" thru 8" in width are not available as hot-rolled carbon steel bars in thickness under 0.230".
**For flats over 6" thru 8" in width and thru 3" in thickness.
.007 0.203 up
to 0.230
Up thru 1
Specified
Widths (inches)
Variations from thickness, for thicknesses given over and under (inches)
TOLERANCES APPLY TO THICKNESS IN INCHES
SQUARE EDGE AND ROUND EDGE FLATS
1/16
3/64
3/64
. . . .
. . . .
Over 3
1/8
3/32
1/16
1/32
1/64
Over
3/32**
1/16
1/32
1/32
1/64
Under
Variations from Width (inches)
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Tolerances apply to thickness in inches
SQUARE EDGE AND ROUND EDGE FLATS