ASTM A276 and ASTM A479 Carbon Steel Round Bar Weight, Dimensions Chart in mm, kg, PDF online

Carbon steel round bars are solid cylindrical pieces of carbon steel that have a common usage in various industries and applications due to their strength, durability, and versatility. Carbon steel is a type of steel that primarily consists of iron and carbon, with trace amounts of other elements such as manganese, phosphorus, sulfur, and silicon. The carbon content in carbon steel typically ranges from 0.05% to 2.0%. The exact composition and properties can change depending on the specific grade of carbon steel, which can include low carbon steel, medium carbon steel and high carbon steel. They come in various grades, more common grades include 1018, 1045, 1050, 1060, 1070, 1080, 1095, and many more. Carbon steel round bar weight and dimensions chart are in PDF format given below.

Carbon steel round bars are available in a wide range of sizes, with diameters typically ranging from 1/4 inch to several inches. The machinability and weldability of these round bars depend on their grades and applications. Carbon Steel round bars are resistant to corrosion and are tough, strong and hard. The weight and dimensions chart are given in mm, kg units.

Tough, easy to clean, perfectly welded and finished, carbon steel round bars have some typical uses which include the following:

  • Construction
  • Infrastructure
  • Aerospace
  • Manufacturing Machinery
  • Automotive
  • Fastners
  • Tools and Cutlery
  • Power Generation

For detailed measurements, refer the dimensions chart below

Carbon Steel Bar Specifications

Carbon Steel Bar Length 2 to 6 meters or 8 to 20 feet
CS Rod Chamfering Available in 30, 45 & 60 degree thru fully automatic both-end chamfering machine
Ultrasonic Test of ASTM A276 Threaded Rod As per ASTM A-388, EN 10308 (class 1 to 4), API 6A/ISO it is 100% tested thru Digital Ultrasonic Flaw Detector,
10423:2003-PSL 3, MIL STD 2154, SEP 1920:1984
CS Round Bar Size Tolerances h11
Tolerance of Cold Rolled CS Round Bar Length Stock in special cut to length bar in tolerance – 0/+10mm (-0 +0.5 inch)
Surface Finish of Cold Rolled CS Bar Cold drawn or Belt polished condition
Bar Heat Treatment Annealed and Solution Annealed

ASTM A276 CS Round Bar Grades

300 Series CS Grades CS 303, 304, 304L, 309, 310, 316, 316L, 316H, 317, 317L, 321, 347
400 Series CS Grades 410, 410PSQ, 410QDT, 410HT, 416, 416HT, 416PSQ, 420

ASTM A276 Standard Carbon Steel Rod Sizes

Type SIZES in milimeter SIZES in inches Tolerance
Peeled and Polished 40.00 - 150.00 1.50 - 6.00 h11, h11-DIN 1013
Cold Drawn and Polish 3.00 to 75.00 1/8 to3.00 h8 to h11
Cold Drawn and Ground 10.00 to 75.00 5/6 to 2.50 h8 to h11
Peeled nd Ground 20.00 - 50.00 3/4 - 2.00 h9 to h11

ASTM A276 CS Round Bars Standard lengths of 2000 mm up to 6000 mm

5.0 45.0
6.0 50.0
7.0 55.0
8.0 60.0
9.0 65.0
10.0 70.0
12.0 75.0
16.0 80.0
20.0 90.0
25.0 100.0
30.0 130.0
35.0 160.0
40.0 200.0

ASTM A479 CS Round Bar Chemical Composition

ASTM Grade Carbon Manganese Silicon Sulfur Phospherous Chromium Nickel Molybdenum Other
304 0.08 max 2.00 max 0.75 max 0.030 max 0.045 max 18.0-20.0 8.0 11.0 - -
316 0.08 max 2.00 max 0.75 max 0.030 max 0.045 max 16.0-18.0 10.0 14.0 2.0 3.0 -
317L 0.035 max 2.00 max 0.75 max 0.030 max 0.045 max 18.0-20.0 11.0 14.0 3.0 4.0 -
310 S 0.08 max 2.00 max 1.5 max 0.030 max 0.045 max 24.0-26.0 19.0 22.0 3.0 4.0 -
347 H 0.04 0.10 2.00 max 0.75 max 0.030 max 0.045 max 17.0- 19.0 9.0 13.0 - 10C(Cb+Ta)<1.10%
321 0.08 2.00 max 0.75 max 0.030 max 0.045 max 17.0-20.0 9.0 12.0 - 5C 0.70%

ASTM A276 Mechanical Properties of Forged Carbon Steel Round Bar

Grade Elongation Density Tensile Strength Yield Strength (0.2%Offset) Melting Point
CS 202 40 % 8.0 g/cm3 515 MPa 275 MPa 1454 °C (2650 °F)
CS 303 50 % 55% Psi – 85,000 Psi – 45,000 Rb 180
CS 304 40% 8.0 g/cm3 Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 1400 °C (2550 °F)
CS 304L 40% 8.0 g/cm3 Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 1400 °C (2550 °F)
CS 316 35 % 8.0 g/cm3 Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 1454 °C (2650 °F)
CS 316L 40 % 8.0 g/cm3 485 Min 170 Min. 1400 °C (2550 °F)

ASTM A276 Round Carbon Steel Bars Weight

Diameter(mm) Weight Chart(kg) Dia(in) Weight Chart(kg)
3mm 0.06 1/8" 0.06
4mm 0.10 3/16" 0.14
5mm 0.16 1/4" 0.25
6mm 0.22 5/16" 0.39
7mm 0.30 3/8" 0.56
8mm 0.40 7/16" 0.77
10mm 0.62 1/2" 1.00
12mm 0.89 9/16" 1.22
14mm 1.22 5/8" 1.56
15mm 1.40 11/16" 1.89
16mm 1.59 3/4" 2.25
18mm 2.01 7/8" 3.07
20mm 2.48 1" 4.03
22mm 3.00    
24mm 3.57    
25mm 3.88