Nearest Equivalent - AISI 1045, JIS S45C, DIN CK45

Applications - Used for most transmission and motor parts of medium strength. Case hardened parts such as camshafts, gears, rocking levers etc. Simple hand tools and various types of fasteners and fixtures, machinery parts and components with medium stress

Nearest Equivalent - AISI 4130Q&T, JIS SCM430H, DIN 25CrMo4

Applications - Machinery structure and motion transmission parts like valves, stems, shafts, axles, connecting rods, crankshafts, pinions, gears etc

Nearest Equivalent - AISI 4140Q&T, JIS SCM440H, DIN 42CrMo4

Applications - Structural parts of high strength, like valves, stems, shafts, axles, connecting rods, crankshafts, pinions, gears and machinery parts.

Nearest Equivalent - AISI 4340Q&T, JIS SNCM447H, DIN 34CrNiMo6

Applications - Structural parts of high strength. Examples: valves, stems, shafts, axles, connecting rods, crankshafts, pinions, machinery parts and components.

Nearest Equivalent - AISI 8630Q&T, JIS SNCM240H, DIN 30NiCrMo22

Applications - High pressure oil & gas components, parts for values, high pressure components, stems, valve seats, pistons, shafts, etc.

Nearest Equivalent - AISI 3115, DIN 15CrNi6

Applications - Components that require properties of high strength as well as high wear resistence. Examples: Cog wheels, chain wheels, gears components, camshafts, crankshafts, etc.