quenched and tempered low-alloy chromium-molybdenum steel 42CrMo4
Equivalent grades: F-125, 42CrMo4+QT, 42CD4, SAE 4140, DIN 1.7225
Standard: EN 10083-1/3 – EN 10277
Tolerance: ISO f7 (Ø ≥20)
Roughness: Ra max. 0,2μm. Rt 3,0μm max.
Straightness: max. 0.3/1000mm
Roundness: within ½ of ISO tolerance.
Chrome layer thickness:
- Ø < 20 = min. 14µm
- Ø ≥ 20 = min. 20µm
Surface hardness: min. 900 HV0.1 (66 HRC)
Corrosion resistance: min. 120 – 200 hours in Neutral Salt Spray testing according to ISO 9227 standard or its equivalents, combined with evaluation according to ISO 10289. Rating ≥ 9. 500 and 1000 hours of corrosion resistance available on request.
Fields of application:
42CrMo4 chrome-plated bar is manufactured from low-alloy chromium-molybdenum steel. It is recommended where there is a requirement for elevated strength in combination with a defined and high level of toughness.
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