T H T - PlasNit hardness values

Tamworth Heat Treatment Ltd.
7 Darwell Park, Amington Industrial Estate, Tamworth, Staffordshire, England. B77-4DR
T: 01827 318 030 F: 01827 318 039 E: sales @ tamworth-heat.co.uk

Material

EN41 / 905M31

EN40B / 722M24

High Speed (all types)

EN24 / EN19
817M40 / 709M40
(Ni/Cr/Mo alloys)

P20

H13

Surface
Hardness

950 - 1100 HV

750 - 850 HV

1000 - 1150 HV

550 - 650 HV

550 - 700 HV

950 - 1100 HV

Case Depth
12 hour ../.. 45 hour ../.. 60 hour

0.005" .. / .. 0.010" .. / .. 0.020"
.125mm / .25mm / .5mm

0.005" - 0.007" / 0.010" - 0.012" / 0.025"
.125 - .175mm / .25 - .3mm / .6mm

0.005" .. / .. 0.010" .. / .. 0.020"
.125mm / .25mm / .5mm

Plasma Nitride - case depths and hardness values