1.4122 is a martensitic grade with enhanced corrosion resistance, comparable to that of ferritic grade 430 and somewhat better than the basic martensitic grades such as 410, 420 and 431.
Approximate Composition - 16% Cr, 0.35% C, 1.0% Mo (EN standard only. No equivalent ASTM grade).
This grade combines the following characteristics:
- Moderate corrosion resistance, better than 410, 420 and 431
- Good strength, 550 MPa minimum 0.2% PS coupled with basic toughness 20 J Charpy impact test
- Good wear resistance
- Not easily welded due to its high carbon content
1.4122 offers the high strength of a martensitic grade combined with enhanced corrosion resistance due to its higher Cr and Mo addition.
Automotive, pump shafts, drive shafts, food processing, mechanical engineering, cutting tools, construction, control valves, freshwater boat shafts, retaining rings.