Zhangjiagang Guangda Special Material Co., Ltd.
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C40 1.0511 forged round bar carbon steel round bar C40 steel bar C40 steel Manufacturer
C40 steel is one mainly of high carbon steel, This steel is of particular importance because of unique combination of strength and toughness after heat treat treatment.
Forged Round Bar 1.0511 C40 Product features
| Material | C40 1.0511 |
| Type | Forged bar ,round ,square, flat, block, shaft etc. |
| Diameter | φ150-1500mm |
| Length | Max 10000mm (10m) |
| Surface | Black, peeled, polishing, bright, sand blast, hair line, etc. |
| Application | C40 steel is used to make machine parts such as screws, bolts, shafts, crankshafts, etc. |
| Tensile strength test | DIN EN ISO 6892-1 |
| Impact test | DIN EN ISO 148-1 |
| UT | DIN EN10228 Quality-Class 3 C/c or D/d |
| Grain size | ASTM E112 / EN ISO 643 |
| Applicable standard | EN10250,EN10083,SEW550 etc |
| Certificate | EN 10204 / 3.1 3.2 |
Forged Round Bar 1.0511 C40 Chemical Compostion
| Standard | Steel designation name | Number | C | Si Max | Mn | P Max | S Max | Cr Max | Mo Max | Ni Max | Cr+Mo+Ni Max | Al Min |
| EN10250 | C40 | 1.0511 | 0.37-0.44 | 0.40 | 0.50-0.80 | 0.045 | 0.045 | 0.40 | 0.10 | 0.40 | 0.63 | - |
Forged Round Bar 1.0511 C40 Permissible deviations
| Permissible deviations between the producct analysis and the limiting values given in Table 1 for the cast analysis EN10250 | ||
| Element | Permissible maximum content in the cast analysis % | Permissible deviation % |
| Carbon | ＜0.55 | ±0.02 |
| ＞0.55 ≤0.65 | ±0.03 | |
| Silicon | ≤0.40 | ±0.03 |
| ＞0.40 | ±0.04 | |
| Manganese | ≤1.00 | ±0.04 |
| ＞1.00 ≤1.65 | ±0.06 | |
| Phosphorus | ≤0.045 | +0.005 |
| Sulfur | ≤0.045 | +0.005 |
| Chromium | ≤0.40 | +0.05 |
| Molybdenum | ≤0.10 | +0.03 |
| Nickel | ≤0.40 | +0.05 |
| Aluminium | ≥0.020 | -0.005 |
Forged Round Bar 1.0511 C40 Mechanical properties
| Steel designation | tR≤100mm | 100＜tR≤250mm | 250＜tR≤500mm | 500＜tR≤1000mm3) | ||||||||||||||||||||||
| Standard | Name | Number | Remin N/mm² | Rmmin N/mm² | A min % | KV min J | Remin N/mm² | Rmmin N/mm² | A min% | KV min J | Remin N/mm² | Rmmin N/mm² | A min % | KV min J | Remin N/mm² | Rmmin N/mm² | A min% | KV min J | ||||||||
| l 1) | tr 1) | l 1) | tr 1) | l 1) | tr 1) | l 1) | tr 1) | l 1) | tr 1) | l 1) | tr 1) | l 1) | tr 1) | l 1) | tr 1) | |||||||||||
| EN10250 | C40 | 1.0511 | 290 | 550 | 17 | - | - | - | 260 | 530 | 17 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
Forged Round Bar 1.0511 C40 Heat treatment
| Heat treatment EN10250 | |||||
| Steel designation | Quenching temperature ℃ | Cooling medium | Tempering temperature ℃ | Normalizing temperature ℃ | |
| Name | Number | ||||
| C40 | 1.0511 | 830 to 870 | Water or oil | 550 to 660 | 850-890 |
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