4140 Machining Chrome Rod
SAE4140/AISI4140 Machining Chrome Rod
Material:Material:AISI4140/SAE4140/SCM440/42CrMo/42CrMo4
Machining Capabilities: Full Process Precision Manufacturing
- Machining Precision:
- Dimensional Tolerance: Outer diameter ±0.005mm, straightness ≤0.01mm/m, roundness ≤0.003mm (higher precision customization available).
- Surface Treatment: Roughness Ra≤0.2μm. Support hard chrome plating (thickness 20 – 150μm), induction hardening (hardness HRC45 – 55), and other processes.
- Equipment Strength:
- Imported CNC lathes (0.001mm level precision), grinding machines (Schleifring, Germany), and honing machines (Koyo, Japan) ensure full process machining.
- 100% inspection by coordinate measuring machines (CMM) and ultrasonic flaw detectors (UT) guarantees defect-free products.
4140 Machined Piston Rod: High Strength, Precision, and Reliability
Item | Standard Value | Customizable Range |
Material | 4140 Alloy Structural Steel | 4130/4340/Stainless Steel |
Diameter Range | Φ10 – Φ200mm | Φ5 – Φ300mm (advance notice required) |
Length Range | 50 – 3000mm | Up to 5000mm |
Surface Treatment | Hard Chrome Plating/Black Oxide/Phosphating | Nickel – Phosphorus plating/Teflon coating |
Tolerance Grade | IT6 – IT7 | IT5 (precision grade) |
Applicable Industries | Construction Machinery/Hydraulic Equipment/Mining Machinery | Aerospace/Petrochemicals (special applications) |
4140 Machining Chrome Rod Chemical Properties, Mechanical Properties and Applications
| Performance Category | Specific Performance | Value |
|---|---|---|
| Chemical Composition | Carbon (C) | 0.38% – 0.43% |
| Silicon (Si) | 0.15% – 0.30% | |
| Manganese (Mn) | 0.75% – 1.0% | |
| Phosphorus (P) | ≤ 0.035% | |
| Sulfur (S) | ≤ 0.040% | |
| Chromium (Cr) | 0.80% – 1.10% | |
| Molybdenum (Mo) | 0.15% – 0.25% | |
| Iron (Fe) | Balance | |
| Physical Properties | Density | 7.85 g/cm³ |
| Melting Point | 1416℃ | |
| Mechanical Properties | Tensile Strength | 655 MPa |
| Yield Strength | 415 MPa | |
| Elastic Modulus | 190 – 210 GPa | |
| Poisson’s Ratio | 0.27 – 0.30 | |
| Elongation at Break (50mm Gauge Length) | 25.70% | |
| Brinell Hardness | 197 | |
| Knoop Hardness (Converted from Brinell Hardness) | 219 | |
| Rockwell Hardness B (Converted from Brinell Hardness) | 92 | |
| Rockwell Hardness C (Converted from Brinell Hardness) | 13 | |
| Vickers Hardness (Converted from Brinell Hardness) | 207 |
- Construction Machinery: Hydraulic piston rods for excavators and cranes, withstand high – load impacts.
- Industrial Equipment: Guide rods for injection molding machines and die – casting machines, support long – term high – frequency reciprocating motion.
- Special Scenarios: Anti – corrosion piston rods for marine engineering (nickel – phosphorus plating), tempered piston rods for high – temperature environments.
If there is demand for customized 4140 machining chrome rod, please feel free to contact: cassie@hydc-rod.com