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Table Of Content

ASTM A36 BAR

CHARACTERISTICS

A-36 steel bar is one of the most widely used carbon steel bars for construction and manufacturing. A36 bar is a hot rolled steel bar that is weldable, formable, and machinable.

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A36 BAR APPLICATIONS

Intermediate tensile strength carbon steel for use in riveted, bolted, or welded construction of bridges and buildings, manufactured parts and equipment.

SIZES OF A36 BAR

A36 Flat Bar: Thicknesses: 0.125" thru 3" Widths: up to 12"
A36 Round Bar: Diameter: 0.125" thru 12" Stock Lengths: 10' thru 24'
A36 Square Bar: Diameter: 0.250" thru 3" Stock Lengths: 11' thru 24'

A36 TYPICAL CHEMICAL PROPERTIES

Carbon Max, %	.27
Manganese Max, %	1.20
Phosphorus Max, %	0.04
Sulfur	0.05
Silicon	0.15 – 0.40
Copper	0.20

A36 TYPICAL MECHANICAL PROPERTIES

Yield Point ksi, min	36
Tensile Strength ksi	58-80
% Elong. 2” Bend	23

A36 STEEL

ASTM A36 is the most commonly used mild and hot-rolled steel. It has excellent welding properties and is suitable for grinding, punching, tapping, drilling and machining processes. Yield strength of ASTM A36 is less than that of cold roll C1018, thus enabling ASTM A36 to bend more readily than C1018. Normally, larger diameters in ASTM A36 are not produced since C1018 hot roll rounds are used.

We manufacture rounds, flats, hexagons, squares, bright bars, etc of A36 steel.

Sizes we offer in A36 steel bars are

Rounds – 20mm to 80mm
Bright Bars – 18mm to 63.5mm
Flats – 50 mm x 8mm to 150mm x 25mm
Squares – 22mm to 75mm
RCS – 55mm, 63mm, 75mm
Hexagons – 23.5mm to 38mm

Applications
ASTM A36 steel has the following applications:

It is used in bolted, riveted or welded construction of bridges, buildings and oil rigs.
It is used in forming tanks, bins, bearing plates, fixtures, rings, templates, jigs, sprockets, cams, gears, base plates, forgings, ornamental works, stakes, brackets, automotive and agricultural equipment, frames, machinery parts.

Machining
The machinability rate of ASTM A36 is estimated to be 72%, and the average surface cutting feed of ASTM A36 is 120 ft/min. Machining of ASTM A36 steel is not as easy as that of AISI 1018 steel.

Welding
ASTM A36 steel is easy to weld using any type of welding methods, and the welds and joints so formed are of excellent quality.

Heat Treatment
Any standard carburizing and hardening methods of AISI 1018 steel is suitable for ASTM A36.

ASTM A36 is subjected to the following processes:

Normalizing at 899oC – 954oC
Annealing at 843oC – 871oC
Stress relieving at 677oC – 927oC
Carburizing at 899oC – 927oC
Hardening at 788oC – 816oC

Typical Chemical Compositon for Bars is as follows depending on size

C% – 0.26% max
Mn% – 0.6 to 0.9
P% – 0.04 max
S% – 0.05 max

Typical Mechanical Properties

Mechanical Properties
Tensile Strength, Ultimate
Tensile Strength, Yield
Elongation at Break (in 200 mm)
Elongation at Break (in 50 mm)
Modulus of Elasticity
Bulk Modulus (typical for steel)
Poissons Ratio
Shear Modulus

Metric
400 – 550 MPa
250 MPa
20.0 %
23.0 %
200 GPa
140 GPa
0.260
79.3 GPa

A-36 Rounds
Stock length 20'
Size	Lbs./Ft
1/4"	0.167
5/16"	0.261
3/8"	0.375
7/16"	0.511
1/2"	0.668
9/16"	0.845
5/8"	1.044
3/4"	1.504
7/8"	2.046
1"	2.673
1-1/4"	4.176
1-3/8"	5.053
1-1/2"	6.014
1-5/8"	7.058
1-3/4"	8.186
2"	10.69
2-1/4"	13.53
2-1/2"	16.71
2-3/4"	20.21
3"	24.06
3-1/4"	28.23

A-36 Rounds
Stock length 20'
Size	Lbs./Ft
3-1/2"	32.74
3-3/4"	37.59
4"	42.77
4-1/4"	48.28
4-1/2"	54.13
4-3/4"	60.31
5"	66.82
5-3/4"	88.37
6"	96.22
6-1/4"	104.4
6-1/2"	112.9
7"	131
7-1/4"	140.5
7-1/2"	150.4
8"	171.1
8-1/2"	193.1
9"	216.5
10"	267.3
11"	323.4
12"	384.9
13"	451.7

ASTM A36 Hot Rolled Flat Bar| A36 Flat Bar| Cut to Size

Hot Rolled Bars - Flats

ASTM A-36 is a general purpose structural quality low carbon steel without advanced alloying. It has good forming, weldability and mechanical properties and easy to fabricate using structural methods like mild cold and hot forming or welding. A-36 specifications for standard bars, shapes and plates 8” or less in thickness maintain yield strength of 36,000 psi and an ultimate tensile strength of 58,000 to 80,000 psi. Elongation in 2” is a minimum of 23%. This material is easily welded using all welding processes. Commonly produced in sheet, plate, bar, and structural shapes, its intended use is riveted, bolted or welded construction like that of bridges and buildings and for general structural purposes where aforementioned A-36 specifications are required.

CHEMICAL ANALYSIS
C	Mn	P	Si	S	Fe

0.29 Max	0.85-1.2	0.04 Max	0.15-0.4	0.05 Max	Balance

Flats A-36		Flats A-36
Stock Length 20'		Stock Length 20'
Size	Lbs./Ft	Size	Lbs./Ft
1/4" x 1/2"	0.425	5/8" x 3/4"	1.595
1/4" x 5/8"	0.531	5/8" x 1"	2.127
1/4" x 3/4"	0.638	5/8" x 1-1/4"	2.659
1/4" x 1"	0.85	5/8" x 1-1/2"	3.191
1/4" x 1-1/4"	1.064	5/8" x 1-3/4"	3.722
1/4" x 1-1/2"	1.267	5/8" x 2"	4.254
1/4" x 1-3/4"	1.489	5/8" x 2-1/2"	5.318
1/4" x 2"	1.702	5/8" x 3"	6.381
1/4" x 2-1/4"	1.914	5/8" x 3-1/2"	7.445
1/4" x 2-1/2"	2.127	5/8" x 4"	8.508
1/4" x 2-3/4"	2.34	5/8" x 4-1/2"	9.572
1/4" x 3"	2.552	5/8" x 5"	10.64
1/4" x 3-1/2"	2.978	5/8" x 6"	12.76
1/4" x 4"	3.403	5/8" x 8"	17.02
1/4" x 4-1/2"	3.829	5/8" x 12"	25.52
1/4" x 5"	4.254
1/4" x 5-1/2"	4.679	3/4" x 1"	2.552
1/4" x 6"	5.105	3/4" x 1-1/4"	3.191
1/4" x 7"	5.956	3/4" x 1-1/2"	3.829
1/4" x 8"	6.806	3/4" x 1-3/4"	4.467
1/4" x 9"	7.657	3/4" x 2''	5.105
1/4" x 10"	8.51	3/4" x 2-1/2''	6.381
1/4" x 12"	10.21	3/4" x 2-3/4''	7.019
		3/4" x 3''	7.657
5/16" x 3/4"	0.797	3/4" x 3-1/2''	8.933
5/16" x 1"	1.064	3/4" x 4''	10.21
5/16" x 1-1/4"	1.329	3/4" x 4-1/2''	11.49
5/16" x 1-1/2"	1.595	3/4" x 5''	12.76
5/16" x 2"	2.127	3/4" x 5-1/2''	14.04
5/16" x 2-1/2"	2.659	3/4" x 6''	15.31
5/16" x 3"	3.191	3/4" x 7''	17.87
5/16" x 3-1/2"	3.722	3/4" x 8''	20.42
5/16" x 4"	4.254	3/4" x 9''	22.97
5/16" x 4-1/2"	4.786	3/4" x 10''	25.52
5/16" x 5"	5.318	3/4" x 12''	30.63
5/16" x 6"	6.381
5/16" x 7"	7.445	1" x 1-1/4"	4.254
		1" x 1-1/2"	5.105
3/8" x 1/2"	0.631	1" x 1-3/4"	5.956
3/8" x 3/4"	0.957	1" x 2"	6.806
3/8" x 1"	1.276	1" x 2-1/4"	7.657
3/8" x 1-1/4"	1.595	1" x 2-1/2"	8.508
3/8" x 1-1/2"	1.914	1" x 2-3/4"	9.359
3/8" x 1-3/4"	2.233	1" x 3"	10.21
3/8" x 2"	2.552	1" x 3-1/2"	11.91
3/8" x 2-1/4"	2.871	1" x 4"	13.61
3/8" x 2-1/2"	3.191	1" x 4-1/2"	15.31
3/8" x 2-3/4"	3.51	1" x 5"	17.02
3/8" x 3"	3.829	1" x 5-1/2"	18.72
3/8" x 3-1/2"	4.467	1" x 6''	20.42
3/8" x 4"	5.105	1" x 7''	23.82
3/8" x 4-1/2"	5.743	1" x 8''	27.23
3/8" x 5"	6.381	1" x 9''	30.63
3/8" x 5-1/2"	7.019	1" x 10''	34.03
3/8" x 6"	7.657	1" x 12''	40.84
3/8" x 7"	8.933
3/8" x 8"	10.21	1-1/4" x 1-1/2"	6.381
3/8" x 9"	11.49	1-1/4" x 2''	8.508
3/8" x 10"	12.76	1-1/4" x 2-1/2''	10.64
3/8" x 12"	15.31	1-1/4" x 3''	12.76
		1-1/4" x 3-1/2''	14.89
1/2" x 3/4"	1.276	1-1/4" x 4''	17.02
1/2" x 1"	1.702	1-1/4" x 5''	21.27
1/2" x 1-1/4"	2.127	1-1/4" x 6''	25.52
1/2" x 1-1/2"	2.552	1-1/4" x 8''	34.03
1/2" x 1-3/4"	2.978
1/2" x 2"	3.403	1-1/2" x 2"	10.21
1/2" x 2-1/4"	3.829	1-1/2" x 2-1/2"	12.76
1/2" x 2-1/2"	4.254	1-1/2" x 3"	15.31
1/2" x 2-3/4"	4.679	1-1/2" x 3-1/2"	17.87
1/2" x 3"	5.105	1-1/2" x 4"	20.42
1/2" x 3-1/2"	5.956	1-1/2" x 5"	25.52
1/2" x 4"	6.806	1-1/2" x 6"	30.63
1/2" x 4-1/2"	7.657	1-1/2" x 8"	40.84
1/2" x 5"	8.508
1/2" x 5-1/2"	9.359	2" x 2-1/2"	17.02
1/2" x 6"	10.21	2" x 3''	20.42
1/2" x 7"	11.91	2" x 4"	27.23
1/2" x 8"	13.61	2" x 5"	34.03
1/2" x 9"	15.31	2" x 6"	40.84
1/2" x 10"	17.02	2" x 8"	54.45
1/2" x 12"	20.42
		2-1/2" x 3"	25.52
		2-1/2" x 4"	34.03
		2-1/2" x 5"	42.54
		2-1/2" x 6"	51.05

		3" x 4"	40.84
		3" x 6"	61.26

ASTM A-36: Produced to mechanical properties offering a minimum yield of 36 KSI and a minimum tensile strength of 58 KSI. A36 Bars are designed to be used in structural applications.
ASTM A-572: A High Strength Low Alloy steel offering a minimum yield of 50 KSI for bar up to 4” thick. Consider this grade whenever a cost saving from a weight reduction can be gained.
ASTM A-588: Also known as “Weathering Steel”, offers similar physical characteristics as High Strength Low Alloy Bar, but also are Copper Bearing and offer approximately two to four times the corrosion resistance of Carbon Steel Bars.

Steel Bar Grade Comparison Chart
All Values are stated as minimum values.

Bars-Comparison Chart

Hot Rolled Carbon Steel Bar
Rounds, Squares and Round-Cornered Squares
Size and Out-of-Round or Out-of-Square Tolerances

Bars-Hot Rolled Steel Chart

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Value Added Services Offered for our Steel Bar.

Saw Cutting: Have your Steel Bar saw cut to length and it will be ready to use as soon as you get it.
Section Bending: Need a Radius put into your Bar? Reliant can do it.
- Round Bar: Minimum Diameter is 1” and the Maximum Size is 4”.
- Square Bar: Minimum Size is 1” and the Maximum Size is 4”.
- Flat Bar:
  EZ Way: Minimum Size is 3/8” x 3”. Maximum Size: 3” x 20”
  Hard Way: Minimum Size is 3/8” x 4”. Maximum Size: 2-1/2” x 10”