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Bars that generate the best solutions!

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In our catalog, we have a complete line of carbon steel bars, composed of:

- Cold Drawn Steel Bars
- Hot Rolled Steel Bars
- Forged Steel Bars

Knowing the importance of this product in your daily life, the Açotubo Group makes available the most complete line of bars in SAE, ASTM, NBR, and DIN norms.

Our mission is to understand them in order to offer the best solutions.

Barras de Aço Carbono

Theoretical Weight in kg/m of Steel Bars

 

 

Diameter Kg/m Diameter Kg/m
Inches. (“) mm • ■ ⬢ Inches. (“) mm •
1/4 6,35 0,25 0,32 0,27 4 101,60 64,00
5/16 7,94 0,39 0,50 0,43 4 1/8 104,77 68,06
3/8 9,53 0,56 0,72 0,62 4 1/4 107,95 72,25
7/16 11,11 0,77 0,98 0,84 4 3/8 111,12 76,56
1/2 12,70 1,00 1,27 1,10 4 1/2 114,30 81,00
9/16 14,29 1,27 1,61 1,39 4 5/8 117,47 85,56
5/8 15,88 1,56 1,99 1,71 4 3/4 120,65 90,25
11/16 17,46 1,89 2,41 2,07 4 7/8 123,82 95,05
3/4 19,05 2,25 2,87 2,47 5 127,00 100,00
13/16 20,64 2,64 3,37 2,90 5 1/4 133,35 110,25
7/8 22,23 3,06 3,90 3,36 5 1/2 139,70 121,00
15/16 23,81 3,51 4,48 3,86 5 3/4 146,05 132,25
1 25,40 4,00 5,10 4,39 6 152,40 144,00
1 1/16 26,99 4,52 5,75 4,95 6 1/4 158,75 156,25
1 1/8 28,58 5,06 6,45 5,55 6 1/2 165,10 169,00
1 3/16 30,16 5,64 7,19 6,19 6 3/4 171,45 182,25
1 1/4 31,75 6,25 7,96 6,85 7 177,80 196,00
1 5/16 33,34 6,89 8,78 7,56 7 1/4 184,15 210,25
1 3/8 34,93 7,56 9,64 8,30 7 1/2 190,50 225,00
1 7/16 36,51 8,26 10,53 9,06 7 3/4 196,85 240,25
1 1/2 38,10 9,00 11,47 9,87 8 203,20 256,00
1 9/16 39,69 9,77 12,44 10,71 8 1/4 209,55 272,25
1 5/8 41,28 10,57 13,46 11,59 8 1/2 215,90 289,00
1 11/16 42,86 11,39 14,51 12,49 8 3/4 222,25 306,25
1 3/4 44,45 12,25 15,61 13,44 9 228,60 324,00
1 13/16 46,04 13,14 16,75 14,41 9 1/4 234,95 342,25
1 7/8 47,63 14,07 17,92 15,43 9 1/2 241,30 361,00
1 15/16 49,21 15,01 19,13 16,47 9 3/4 247,65 380,25
2 50,80 16,00 20,39 17,55 10 254,00 400,00
2 1/16 52,39 17,02 – – 10 1/4 260,35 420,25
2 1/8 53,98 18,07 – – 10 1/2 266,70 441,00
2 3/16 55,56 19,14 – – 10 3/4 273,05 462,25
2 1/4 57,15 20,25 – – 11 279,40 484,00
2 5/16 58,73 21,39 – – 11 1/4 285,75 506,25
2 3/8 60,33 22,57 – – 11 1/2 292,70 531,17
2 7/16 61,91 23,76 – – 11 3/4 298,45 552,25
2 1/2 63,50 25,00 – – 12 304,80 576,00
2 9/16 65,09 26,27 – – 12 1/2 317,50 625,00
2 5/8 66,68 27,57 – – 13 330,20 676,00
2 11/16 68,26 28,89 – – 13 1/2 342,90 729,00
2 3/4 69,85 30,25 – – 14 355,60 784,00
2 13/16 71,44 31,64 – – 14 1/2 368,30 841,00
2 7/8 73,03 33,07 – – 15 381,00 900,00
2 15/16 74,61 34,51 – – 15 1/2 393,70 961,00
3 76,20 36,00 – – 16 406,40 1024,00
3 1/8 79,38 39,07 – – 17 431,80 1156,00
3 1/4 82,55 42,25 – – 18 457,20 1296,00
3 3/8 85,73 45,57 – – 19 482,60 1444,00
3 1/2 88,90 49,00 – – 20 508,00 1600,00
3 5/8 92,08 52,57 – – Specific weight = 7,85 kg/dm3
3 3/4 95,25 56,25 – –
3 7/8 98,43 60,07 – –

Characteristics of Steels.

 

The European community has standardized the EN 10087/98 standard to replace the German DIN 1651/88 standard, but it is all based on DIN

 

Designation Grade / Alloy Norma Chemical Composition Characteristics Key applications
C Mn P S Si (máx.) Cr (máx.) Others
ASTM A – 36 A36 0,26 máx. 0,60 – 0,90 0,040 máx. 0,050 máx. 0,40 – Cu = 0,20 mín. Steels with good characteristics of mechanical strength, formability, machinability, and weldability. Structural profiles. Bars for locksmiths.
ASTM GR50 A572 0,23 máx. 1,35 máx. 0,040 máx. 0,050 máx. 0,40 – –
ASTM A – 588 A588 0,20 máx. 0,75 – 1,35 0,040 máx. 0,050 máx. 0,15 – 0,50 0,40 – 0,70 Cu = 0,20 – 0,40 Structural profiles with higher corrosion resistance.
1020 SAE J403 0,18/0,23 0,30/0,60 0,040 máx. 0,050 máx. – – – Good cold formability and weldability. Limited machinability. Automotive industry, forging.
1045 SAE J403 0,43/0,50 0,60/0,90 0,040 máx. 0,050 máx. – – – Good hot formability and good machinability. Parts for the automotive industry, such as axles.
4130 SAE J404 0,28/0,33 0,40/0,60 0,030 máx. 0,040 máx. 0,15/0,35 0,80/1,10 Mo=0,15/0,25 Good tempering, usually used for medium-sized pieces when water tempered and for small pieces when oil tempered. Connecting rods, steering arms, shafts, bolts, rivets, and oil exploration industries.
4140 SAE J404 0,38/0,43 0,75/1,00 0,030 máx. 0,040 máx. 0,15/0,35 0,80/1,10 Mo=0,15/0,25 Steel for processing, with a good relation between mechanical resistance and more weldability. Miscellaneous mechanical components, forged or machined.
4340 SAE J404 0,38/0,43 0,60/0,80 0,030 máx. 0,040 máx. 0,15/0,35 0,70/0,90 Ni=1,65/2,00 Mo=0,20/0,30 High hardenable steel. Pieces of great thickness and high stress.
5160 SAE J404 0,56/0,64 0,75/1,00 0,030 máx. 0,040 máx. 0,15/0,35 0,70/0,90 – Good hardenability, high tensile strength and fatigue resistance. Good properties above 300° C. Spring beams and agricultural implements.
8620 SAE J404 0,18/0,23 0,70/0,90 0,030 máx. 0,040 máx. 0,15/0,35 0,40/0,60 Ni=0,40/0,70 Mo=0,15/0,25 Low alloy carburizing steel. Gears, sprockets, chains and other cemented components.
8630 SAE J404 0,26/0,33 0,70/0,90 0,030 máx. 0,040 máx. 0,15/0,35 0,40/0,60 Ni=0,40/0,70 Mo=0,15/0,25 Low hardenability with good mechanical properties in small sections when normalized. Medium to large sized parts for which a high degree of strength and toughness is required, such as arms and shaft ends, parts for drilling equipment, oil exploration, etc.
8640 SAE J404 0,38/0,43 0,75/1,00 0,030 máx. 0,040 máx. 0,15/0,35 0,40/0,60 Ni= 0,40/0,70 Mo= 0,15/0,25 Medium hardenable steel. Used for shafts, gears, parts, joints.
20MnCr5 DIN 10084 0,17/0,22 1,10/1,40 0,035 máx. 0,035 máx. 0,40 máx. 1,00/1,30 – Low alloy carburizing steel. Gears, sprockets, chains and other cemented components.
1030 SAE J403 0,32/0,38 0,60/0,90 0,030 máx. 0,05 – – Medium carbon content with varied application, indicated for forging. Shafts, pins, levers, springs of low request.
1212 SAE J403 0,13 máx. 0,70/1,00 0,070/0,120 0,16/0,23 0,05 0,10 High machinability. Resulfurized and rephosphored steels. Applied in easy machinability.
1213 SAE J403 0,13 máx. 0,70/1,00 0,070/0,120 0,24/0,33 0,05 –
12L14 SAE J403 0,15 máx. 0,85/1,15 0,040/0,090 0,26/0,35 0,02 – Pb=0,20/0,35 Better machinability. Leaded steel.
1213 DIN 11SMn30/9SMn28 0,14 máx. 0,90/1,30 0,11 máx. 0,27/0,33 0,05 – – –
12L14 DIN 11SMnPb30/9SMnPb28 0,14 máx. 0,90/1,30 0,110 máx. 0,27/0,33 0,05 – Pb=0,20/0,35 – –
1215 DIN 11SMn37/9SMn36 0,14 máx. 1,10/1,50 0,11 máx. 0,34/0,40 0,05 – – –
12L14 DIN 11SMnPb37/9SMnPb36 0,14 máx. 1,00/1,50 0,110 máx. 0,34/0,40 0,05 – Pb=0,20/0,35 – –

Round rolled bars according to NBR 13283

 

Nominal Dimension (mm) Diameter Tolerance (mm) Ovalization Tolerance (mm) Warping/Meter (mm/m) Full warping
6,00 – 15,99 ± 0,40 Maximum 0,60 4,0 0,004 X Total bar length in mm
16,00 – 25,99 ± 0,50 Maximum 0,75
26,00 – 35,99 ± 0,60 Maximum  0,90
36,00 – 40,99 ± 0,70 Maximum 1,05
41,00 – 50,99 ± 0,80 Maximum 1,20
51,00 – 63,99 ± 0,90 Maximum 1,35
64,00 – 80,99 ± 1,00 Maximum 1,50
81,00 – 100,99 ± 1,30 Maximum 1,95 2,5 0,0025 X Total bar length in mm
101,00 – 120,99 ± 1,50 Maximum 2,25
121,00 – 160,99 ± 2,00 Maximum 3,00
161,00 – 200,99 ± 2,50 Maximum 3,75
201,00 – 210,00 ± 3,15 Maximum 4,72
210,01 – 220,00 ± 3,30 Maximum 4,95
220,01 – 230,00 ± 3,45 Maximum 5,17
230,01 – 240,00 ± 3,60 Maximum 5,40
240,01 – 250,00 ± 3,75 Maximum 5,62

Round, square, and hexagonal steel bars with surface finish (drawn and peeled) in accordance with NBR 8580-15.

 

Customer Finished Measure (mm) Ground/drawn/scraped Ovalization Warping
H7 H8 H9 H10 H11
3 < DN ≤ 6 0,012 0,018 0,030 0,048 0,075 50% of the nominal tolerance The bars cannot have visible warping
6 < DN ≤ 10 0,015 0,022 0,036 0,058 0,090
10 < DN ≤ 18 0,018 0,027 0,043 0,070 0,110
18 < DN ≤ 30 0,021 0,033 0,052 0,084 0,130
30 < DN ≤ 50 0,025 0,039 0,062 0,100 0,160
50 < DN ≤ 80 0,030 0,046 0,074 0,120 0,190
80 < DN ≤ 120 0,035 0,054 0,087 0,140 0,220
120 < DN ≤ 180 0,040 0,063 0,100 0,160 0,250
180 < DN ≤ 250 0,046 0,072 0,115 0,185 0,290
250 < DN ≤ 315 0,052 0,081 0,130 0,210 0,320

Forged bars according to DIN 7527.

 

Customer Finished Measure (mm) Sobremetal Tolerance Sobremetal Tolerance
Alloyed Steel (mm) Carbon Steel (mm)
Above 63 to 80 7 ± 1,4 11 ± 3,1
Above 80 to 100 8 ± 1,7 12 ± 3,4
Above 100 to 125 10 ± 2,0 14 ± 3,8
Above 125 to 160 12 ± 2,3 16 ± 4,2
Above 160 to 200 14 ± 2,8 18 ± 4,9
Above 200 to 250 17 ± 3,4 21 ± 5,6
Above 250 to 315 21 ± 4,2 25 ± 6,5
Above 315 to 400 26 ± 5,1 30 ± 7,7
Above 400 to 500 32 ± 6,3 36 ± 9,2
Above 500 to 630 39 ± 7,8 44 ± 11,0
Above 630 to 800 49 ± 9,8 54 ± 13,5