| Chemical Composition | |||||||
| Material | C% | Mn% | Si% | S% | P% | V% | Cr% |
| Ck45 | 0.42-0.50 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | ≤0.25 | |
| ST52 | ≤0.22 | ≤1.6 | ≤0.55 | ≤0.04 | ≤0.04 | 0.02-0.15 | |
| 20MnV6 | 0.17-0.24 | 1.30-1.70 | 0.10-0.50 | ≤0.035 | ≤0.035 | 0.10-0.20 | ≤0.30 |
| 42CrMo4 | 0.38-0.45 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | 0.07-0.12 | 0.90-1.20 |
| 40Cr | 0.37-0.45 | 0.50-0.80 | 0.17-0.37 | ≤0.035 | ≤0.035 | 0.80-1.10 | |
| Mechanical Properties | |||||
| Material | T.S N/MM2 | Y.S N/MM2 | E%(MIN | CHARPY | CONDITION |
| CK45 | 610 | 355 | 15 | >41J | NORMALIZE |
| CK45 | 800 | 630 | 20 | >41J | Q+T |
| ST52 | 500 | 355 | 22 | NORMALIZE | |
| 20MnV6 | 750 | 590 | 12 | >40J | NORMALIZE |
| 42CrMo4 | 980 | 850 | 14 | >47J | Q+T |
| 40Cr | 1000 | 800 | 10 | Q+T | |
| Grade of tolerance Dia mm φ |
f | 9 | h | |||
| f7 | f8 | g6 | h7 | h8 | h9 | |
| 3mm | 0.006 0.016 |
0.006 0.020 |
0.002 0.008 |
0 0.010 |
0 0.014 |
0 0.025 |
| 3mm-6mm | 0.010 0.022 |
0.010 0.028 |
0.004 0.012 |
0 0.012 |
0 0.018 |
0 0.030 |
| 6mm-10mm | 0.013 0.028 |
0.013 0.035 |
0.005 0.014 |
0 0.015 |
0 0.022 |
0 0.036 |
| 10mm-18mm | 0.016 0.034 |
0.016 -0.043 |
0.006 0.017 |
0 0.018 |
0 0.027 |
0 -0.043 |
| 18mm-30mm | 0.020 0.041 |
0.020 0.053 |
0.007 0.020 |
0 0.021 |
0 0.033 |
0 0.052 |
| 30mm-50mm | 0.025 0.050 |
0.025 0.064 |
0.009 0.025 |
0 0.025 |
0 0.039 |
0 0.062 |
| 50mm-80mm | 0.030 0.060 |
0.030 0.079 |
0.010 0.029 |
0 0.030 |
0 0.046 |
0 0.074 |
| 80mm-120mm | 0.036 0.071 |
0.036 0.090 |
0.012 0.034 |
0 0.035 |
0 0.054 |
0 0.087 |
| 120mm-180mm | -0.043 0.083 |
-0.043 0.106 |
0.014 0.039 |
0 0.040 |
0 0.063 |
0 0.100 |
| 180mm-250mm | 0.050 0.096 |
0.050 0.122 |
0.015 -0.044 |
0 -0.046 |
0 0.072 |
0 0.115 |
| 25000-31500 | 0.056 0.108 |
0.056 -0.137 |
0.017 0.049 |
0 0.052 |
0 0.081 |
0 -0.130 |
| 315mm-400mm | 0.062 -0.119 |
0.062 0.151 |
0.018 -0.054 |
0 0.057 |
0 0.089 |
0 -0.140 |
| 400m0-500mm | 0.068 0.131 |
0.068 0.165 |
0.020 0.060 |
0 0.063 |
0 0.097 |
0 0.155 |
1.What is a round bar called?
The most common shapes are round bar (also called rod), rectangular bar (including square bar, the special case of equal sides), and hexagonal bar (usually called hex bar for short). Tube and pipe are similar, but have hollow centers and are traditionally not called "bar" in industrial usage.
2.Are rebar and round bar the same?
Round steel and other types of rebars, such as deformed bars and square bars, differ in their shape, surface texture, and mechanical properties. Shape: Round steel bars are cylindrical in shape, while deformed bars have ridges or deformations on their surface that provide better grip and bonding with concrete.
3.How strong is a round bar?
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4.What does a round bar look like?
Round Bar is a long, circular solid metal bar that can be used in a wide variety of industrial, commercial, and residential applications. Our branches offer a range of mild steel round bars in 300 grade mild steel, with our standard diameters ranging from 6 to 50mm.
5.What is the difference between a round bar and a dowel bar?
Also known as dowel bars, round bars are steel bars that are placed between concrete slabs to help transfer the load from one slab to the other. Round bars reinforce the connection between slabs and improve the performance of pavement joints.