SHANGHAI UNITE STEEL
One-stop Brand Service Provider For Globle Machinery And Petrochemical Enterprise And Special Steel Distributor.
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4140/42CrMo4 Hard Chrome Plated steel bar, piston rod, Dia: 2-800mm
Application:
Machine centers,Machine tools,Precision machining machines,Heavy cutting machines,
Punching machines,Marble cutting machines,Automatic equipments,Grinding machines,High speed transfer equipments,Injection molding machines,Measuring equipments.
Chemical requirements
| Grade | C | Si | Mn | P | S | Cr | Mo | Cu |
| 4140 | 0.38~0.43 | 0.15~0.35 | 0.75~1.00 | ≤0.035 | ≤0.040 | 0.80~1.10 | 0.15~0.25 | / |
| SCM440 | 0.38~0.43 | 0.15~0.35 | 0.60~0.85 | ≤0.030 | ≤0.030 | 0.90~1.20 | 0.90~1.20 | ≤0.30 |
| 42CrMo4 | 0.38~0.45 | ≤0.40 | 0.60~0.90 | ≤0.035 | ≤0.035 | 0.90~1.20 | 0.15~0.30 | / |
| 42CrMo | 0.38~0.45 | 0.17~0.37 | 0.50~0.80 | ≤0.030 | ≤0.030 | 0.90~1.20 | 0.15~0.25 | / |
Size range:
Dia: 2-800mm
Length Random Length, Fixed Length, etc.
| Applications | Machine centers,Machine tools,Precision machining machines,Heavy cutting machines,Punching machines,Marble cutting machines,Automatic equipments,Grinding machines,High speed transfer equipments,Injection molding machines,Measuring equipments. |
| Material | alloy steel, carton steel or stainless steel |
| Equipment | From simple 2-axis turning to 7-axis, turn-mill-drill CNC Swiss-type/machines, we are equipped with a full line of CNC equipment from the following manufactures:/molding machines/ stamping machines/automatic lathe machines/ spring machines, and so on. |
| Process | Raw materials →heat treatment(normalizing+tempering) →Peeled/cold drawn/turned → Straightening →Cutting→ inspection → rough grinding 3 times → Straightening →Inspection →Precision grinding 2 times →Inspection →Polishing →Inspection → Chromeplating →Inspection →Polishing →Inspection →Packaged |
| Heat Treatment | Normalization , quenching and tempering, Case Hardening, Nitriding, Carbon Nitriding, Induction Quenching |
| Dimension | Dia: 2-800mm, Length Random Length, Fixed Length, etc |
| Tolerance | ISO 2768-1-f, and ovality is half of the tolerance of diameter |
| Chrome thickness | 10micron (min) |
| Surface hardness | 800 - 1200 HV |
| Surface roughness | Ra 0.1 or Less Than Rz0.8 |
| Straightness | 0.1/1000 (min) |
| Salt spray | 48 - 120 hours (Chromed) |
| Packing | Wooden case or according to customers' requirement |
| Delivery time | Within 5-25 days. |
Please feel free to contact us again if you have any further questions. We look forward to receiving an order from you.
Skype: erichuang20111