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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.
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.
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
| Diameter(mm) | h8 | h9 | h10 | h11 | h12 |
| 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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