Cold Drawn Round Bar – Cold Finished Steel Bar

Cold Drawn Round Bar – Cold Finished Steel Bar

Categories:Steel Bars

Model No.:1020/1045/4140

Diameter: Dia 2.0-100mm.

Tolerance (mm): h8 h9 h10 h11 h12.

Straightness: 0-0.80mm/meter.

Surface: Smooth or Bright.


DETAIL INFORMATION

Cold Drawn Round Bar – Cold Finished Steel Bar 


Application

Cold Drawn round bar is used in machinery making, automobile making, railway, mine machinery, petroleum machinery, agricultural machinery, such as all kinds of shafts, screws, chrome plated rod, connecting rods, hardware tools, gears, standard parts, spanners fasteners, structural parts for automobile and agricultural machinery, outer and iner sleeves, rollers and balls for bearing making, etc.


Quality Standard

-BS EN 10277 Part 1 Bright steel products — Technical delivery conditions.

-BS 970 Part 3 Bright bars-mechanical and allied engineering purposes for general engineering purposes.


Steel Grades

ASTM: 1010/1020/1026/1030/1035/1045/4130/4140/4145/52100/6150/8620….

EN: C10E/C35E/C45E/E355/41Cr4/30CrMo4/34CrMo4/42CrMo4/1.7225/16MnCr5/20MnCr5….

DIN: CK30/CK35/CK45/St52/41Cr4/34CrMo4/42CrMo4/1.7225/50Cr4….

JIS: S10C/S20C/S30C/S35C/S45C/SCr420/SCM430/SCM440/SACM645….

GB/T: 10#/20#/30#/35#/45#/Q345B/25Mn/40Cr/27SiMn/30CrMo/35CrMo/42CrMo….


Chemical Composition(%)

Steel Grade             C                  Si                  Mn               P                   S                      Cr                  Mo

1020                  0.18-0.23            /              0.30-0.60    0.040 max    0.050 max             /                    /


1035                  0.43-0.50            /              0.60-0.90    0.040 max    0.040 max             /                    /


1045                  0.43-0.50            /              0.60-0.90    0.040 max    0.040 max             /                    /


ST52                  0.22 max     0.55 max      1.60 max    0.035 max    0.040 max             /                    /


4130                 0.28-0.33      0.15-0.35      0.40-0.60    0.040 max    0.040 max      0.80-1.10      0.15-0.25


4140                 0.38-0.43     0.15-0.35      0.75-1.00    0.040 max    0.040 max       0.80-1.10      0.15-0.25


Tolerance

Diameter(mm)h8h9h10h11h12
0 < D ≤ 3-0.014,+0-0.025,+0-0.040,+0-0.060,+0-0.100,+0
3 < D ≤ 6-0.018,+0-0.030,+0-0.048,+0-0.075,+0-0.120,+0
6 < D ≤ 10-0.022,+0-0.036,+0-0.058,+0-0.090,+0-0.150,+0
10 < D ≤ 18-0.027,+0-0.043,+0-0.070,+0-0.110,+0-0.180,+0
18 < D ≤ 30-0.033,+0-0.052,+0-0.084,+0-0.130,+0-0.210,+0
30 < D ≤ 50-0.039,+0-0.062,+0-0.100,+0-0.160,+0-0.250,+0
50 < D ≤ 80-0.046,+0-0.074,+0-0.120,+0-0.190,+0-0.300,+0
80 < D ≤ 120-0.054,+0-0.087,+0-0.140,+0-0.220,+0-0.350,+0

Delivery condition

+BK: Cold Finished(Hard), +BKS: Cold Finished and Stress Relieved.


Capacity

2,000 ton per month.


Test

Chemical analysis, Mechnical analysis, Ultrasonic testing, Metallographic, Straightness, Surface quality and dimension report.


Package

Plastic plugs in both ends, Hexagonal bundles of max 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.


Mill’s Test Certificate

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.


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