Available Shapes
EN32 Case Hardening Steel
EN32 (080M15) is bright drawn engineering steel with low tensile strength and is intended for use in general engineering applications, particularly for low stressed components. Classed as an unalloyed low carbon engineering steel grade, when case hardened the material offers a hard, outer surface with a tough internal core. Tempering of EN32 is recommended to offer maximum case toughness and stress relief with a tempering range from 150 – 200°C. A core strength of up to 490 N/mm² can be achieved for components when carburized. EN32 should be considered for any lightly stressed applications where good wear resistance is a consideration. Other engineering steels should be considered where extra strength is required. EN32 (080M15) can be viewed as a ‘crossover’ material as essentially it is the same product as EN3B but is marketed and supplied specifically for case hardening work.
Applications
Analysis
Case Hardening
Hardening
Tempering
Typical Mechanical Properties*
Heat Treatment
Applications
EN32 (080M15) is general engineering steel that is suitable for manufacturing lightly stressed parts and components. Application examples include: Collet chucks Spindles and gears Bushes, cams, and rollers Applications requiring good wear resistance Used in lightly stressed components
Analysis
Carbon | 0.10-0.18% | Phosphorous | 0.05% max |
Manganese | 0.60-1.00% | Sulphur | 0.05% max |
Silicon | 0.05-0.35% |
Case Hardening
EN32 is suited for carburising and case hardening, surfaces must be free from dirt and grease, and of low sulphur content.
Hardening
Harden at a temperature of 760-780°C. Quench in water.
Tempering
Tempering is recommended for stress relief and maximum case toughness. Tempering range from 150-200°C.
Typical Mechanical Properties*
Tensile Strength N/mm² | Elongation % | Impact Izod J | Impact KCV J |
---|---|---|---|
430 | 18 | 39 | 35 |
(*blank case hardened – 29mm test piece)
Heat Treatment
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of case hardening steel grades.