Case Hardening Steel (8620 – 7131)

Case hardening steels are special alloy steels preferred in applications where both surface hardness and core toughness are required. Case hardening steels we offer with Mersin Steel - Çelik Boru quality provide wear-resistant surface and high impact strength.

• Main Qualities
  • 8620 (20NiCrMo2-2) case hardening steel
  • 7131 quality case hardening steel
  • 20MnCr5 case hardening steel
  • High nickel and chromium content
  • Deep case hardening capability
• Forged Round Steel Properties
  • 190 mm - 1000 mm diameter range
  • Forged structure
  • Dense and fibrous internal structure
  • Resistance to cracking and deformation
  • Homogeneous strength distribution
• Heat Treatment Properties
  • Surface hardening suitability
  • Core toughness preservation
  • Hardness after case hardening
  • Long service life
  • Mersin Steel - Çelik Boru quality standard

Application Areas

• Gear production
• Shaft and axle manufacturing
• Heavy duty parts
• Automotive sector
• Defense industry
• Energy sector
• Heavy machinery production
• Large sized parts

Forged Round Steel Qualities

• S355J2 (St52)
  • High strength structural steel
• C45E
  • Medium carbon steel
  • Good machinability
• 42CrMo4 (SAE 4140)
  • Applications requiring high strength
  • Impact resistance
• 20MnCr5
  • Applications requiring surface hardness
  • Case hardening compatibility
• 20NiCrMo2-2 (SAE 8620)
  • Deep case hardening capability
  • Core toughness