SAE4140 Q+T Induction Hardened Chrome Rod usually manufactured from cold rolled or hot rolled carbon steel 4140 round bars, The surface of the electroplated coating of the chrome-plated rod after treatment has no blackening, peeling, no wrinkling, no pinholes, and the surface of the coating is smooth.Induction Hardened produced by using advanced processing techniques usually on steel rods, for surface removal, polishing, induction hardening, followed by hard chrome plating.
4140 hard chrome plated bar is used extensively by the hydraulic and pneumatic industries, and is employed by other industry sectors for a wide range of applications requiring higher strength.
Description Of 4140 Q+T Induction Hardened Chrome Rod
Material: SAE4140 AISI4140 SCM440,42Crmo4 4140
Type: Induction Hardened Chrome Rod/Chrome Plated Bar/Chrome Plated Rod/Nickel-Chrome Plated Rod/Hollow Chrome Bar/Hollow Chrome Rod
Heat Treatment Type: 1) Induction Hardened 2)Q+T(Quenched+Tempered) Induction Hardened
Diameter: Φ 6-1000mm imperail sizes available
Length: max.20 meters
Salt Spray Test：Passed As Per Request
Chrome layer: min 20/25/30/50 Micron or customized
Straightness: <= 0.5/1000
Roughness: Ra <= 0.4u
Diameter tolerance: ISO f7/f8/f9/h8/h9 or as request
Below is the chemical composition & mechanical properties of the 4140 Q+T induction hardened chrome rod.
| Chemical Composition (Base Material) | ||||||||
| Min. % | Max % | |||||||
| Carbon | 0.36 | 0.44 | ||||||
| Silicon | 0.10 | 0.40 | ||||||
| Manganese | 0.65 | 1.10 | ||||||
| Chromium | 0.75 | 1.20 | ||||||
| Molybdenum | 0.15 | 0.35 | ||||||
| Phosphorous | 0 | 0.04 | ||||||
| Sulphur | 0 | 0.04 | ||||||
| Typical (Base Metal) Mechanical Properties | ||||||||
| Manufacturing Process | Turned | |||||||
| Tensile Strength Mpa | 900 | |||||||
| Yield Strength Mpa | 800 | |||||||
| Elongation In 50mm % | 20 | |||||||
| Hardness Brinell HB | 270 | |||||||
