Thermal surface hardening

Thermal surface hardening

  • Hardening only on the surface (0.5 mm depth)
  • No impact on base metal properties
  • No cracking

Features

Popular laser cladding solutions

Nickel-based
Properties Techno powder 625 Techno powder С-276 Hastelloy Technolase 20S Technolase 30S Technolase 40S Technolase 50S Technolase 60S Techno powder 625 Inconel 625
Chemical composition Type of tungsten carbide – W2C No No 60% 60% 60% 60% 60% No
Balance Ni, Cr Ni, Cr Ni Ni Ni Ni Ni Ni, Cr
Tungsten carbide hardness 3000 Hv 3000 Hv 3000 Hv 3000 Hv 3000 Hv
Hardness matrix (HRc) 20-22 20-22 25-30 30-35 35-45 50 55-62 25-29
Turning / milling capability Yes No No No No No No No
Standard roughness parameter (Ra) Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4/0,8
Wear resistance + ++ +++ +++ ++++ +
Corrosion resistance ++++ + ++ ++ ++ ++ ++ +++
Sensitivity to cracking by voltage No No No No cracks are achieved Yes Yes Yes No
Cobalt-based/Laser Other solutions
Properties TP 431 Stellite 1 TP 245 Stellite 6 TP 255 Stellite 12 Technolase 50S Ultimet WC AISI 420 or 431 Techno Powder 7 Technolase 70S
Chemical composition WC-W2C No No No 50% 60% No No 50%
Баланс Co, Cr Co, Cr Co, Cr Co, Cr Co, Cr, Ni
Tungsten carbide hardness 3000 Hv 3000 Hv
Hardness matrix (HRc) 51-60 40-46 45-51 63-65 ≥40 50-55 65-66 >70
Turning / milling capability Yes, but difficult Yes Yes No No Yes Yes, but difficult No
Standard roughness parameter (Ra) Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4/0,8 Ra 0,4 Ra 0,4 Ra 0,4
Wear resistance +++ ++ ++ ++++ ++++ ++ +++ ++++
Resistance to corrosion +++ +++ +++ ++ ++++ ++
Sensitivity to cracking by voltage Yes No No Yes Yes No No cracks are achieved Yes