Salt Bath Nitrocarburising (Tenifer QPQ®)

With salt bath nitrocarburising (salt-bath nitriding), components are treated in molten salt and then oxidised in a quenching bath To optimize surface characteristics, the components can then be polished (blasted).

Advantages

  • Increases durability
  • Versatile, cost-efficient
  • Significant increase in corrosion resistance with QPQ® treatment

Materials

  • Casting materials
  • Tool steels

Available plant sizes

  • Length 1400 mm, Diameter 800 mm
Salt Bath Nitrocarburising

Typical values for Salt Bath Nitrocarburising

Which materials can be plasma nitrided? What hardness and nitriding depth can be achieved? Here you will find an overview of typical hardness values of different material groups:

DIN EN 10027-2 Material number DIN EN 10027-2 (Short) designation Surface Hardness in Vickers [HV0,5] max. Nitriding hardness depth (NHD) [mm]
Carbon steel
1.0060 E335 280-500 0,6
1.0577 S355 280-480 0,6
1.1191 C 45 E 300-500 0,7
1.1221 C 60 E 300-500 0,7
1.5122 37MnSi5 300-500 0,6
Tempered steel
1.0762 44SMn28 (ETG 100) 400-500 0,3
1.7033 34Cr4 500-600 0,5
1.7220 34CrMo4 500-600 0,5
1.7225 / 1.7227 42CrMo4 / 42CrMoS4 550-700 0,5
1.8159 50CrV4 550-700 0,5
1.8161 58CrV4 550-700 0,5
1.6582 34CrNiMo6 600-800 0,5
1.2710 45NiCr6 600-750 0,4
1.2312 40CrMnMoS86 650-800 0,3
Case-hardening steel
1.7131 / 1.7139 16MnCr5 / 16MnCrS5 600-750 0,5
1.7147 20MnCr5 600-650 0,4
1.5752 14NiCr14 500-650 0,4
Nitriding steel
1.8504 34CrAl6 900-1200 0,4
1.8507 34CrAlMo5 900-1300 0,5
1.8519 31CrMoV9 780-900 0,5
1.8550 34CrAlNi7 900-1100 0,5
Ball bearing steel
1.3505 100Cr6 450-700 0,25
1.2510 100MnCrW4 500-700 0,25
Grey cast iron — nodular cast iron
0.6025 EN-GJL-250 (GG 25) 300-450 0,3
0.7080 EN-GJS-600 (GGG 60) 450-600 0,4
Stainless steel
1.4006 X10Cr13 900-1100 0,1
1.4021 X20Cr13 900-1200 0,1
1.4034 X40Cr13 900-1200 0,1
1.4122 X35CrBo17 1000-1250 0,15
1.4571 X10CrNiMoTi1712-2 900-1150 0,1
Cold work steel
1.2379 X155CrMoV121 900-1200 0,15
1.2080 X210Cr12 850-1150 0,15
1.2364 X100CrMoV51 1000-1200 0,2
1.2601 X165CrMoV12 900-1150 0,15
1.2436 X210CrV12 700-900 0,15
Hot work steel
1.2343 X38CrMoV51 900-1150 0,4
1.2344 X40CrMoV51 900-1150 0,4
1.2567 X30WCrV53 850-1050 0,3
1.2365 X32CrMoV33 750-900 0,3
High Speed Steel (HSS)
All qualities 950-1400 0,02-0,15

The maximum hardness is determined by the material. All statements without guarantee.

Downloads

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Material characteristics nitriding (PDF)