SAE 4140 Hard Chrome Plated Bars
SAE 4140 Hard Chrome Plated Bars and SAE 4140 Hard Chrome Plated Rods Manufacturer
SAE 4140 Hard Chrome Plated Rods and SAE 4140 Hard Chrome Plated Bars are produced with high strength material AISI 4140 steel round rods,which is a kind of alloy structural steel.The applications are all kinds of cylinders, piston rods, textile printing machinery and other mechanical guide rods, jacking rods, etc.
SAE 4140 Chrome Plated Rod Description
Size: Ø 6-300mm
Length: 1m-9m
Material: SAE 4140 /AISI 4140/42CrMo4
Tolerance: ISO F7
Chrome thickness: 20~30micron
Hardness of the chrome layer: 800HV(min)
Roughness: Ra≤ 0.2micron
Straightness: 0.2/1000mm
Delivery condition:
Hard chrome plated
Induction hardened
Quenched & Tempered
Induction hardened with Q&T
Chemical Composition+Mechanical Properties
| 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 | |
SAE4140 Hard Chrome Plated Rod Application
SAE 4140 alloy steel has high fatigue strength and low notch sensitivity, high low temperature impact toughness, no obvious temper brittleness, and is mainly used in the quenched and tempered state. SAE4140 Hard Chrome Plated Rod is used to manufacture high-strength parts and parts with large cross-sections and other stress-bearing components under impact load. Such as high strength Hydraulic cylinder rods, penaumatic cylinder rods, the transmission eccentric shaft of the horizontal forging machine, the crankshaft of the forging press, etc.
