17HNM / 18CrNiMo7-6 / 1.6587

Apvalus strypai
nuo Ø30mm iki Ø250mm

 

Description:

High strength carburizing steel.

 

Application:

heavily loaded gear wheels, high speed gear transmissions, shafts and other parts subject to high pressures

 

Chemical composition [%]

C Mn Si P S Cr Ni Mo W V Co Cu
0,15-0,21 0,5-0,9 max 0,4 max 0,035 max 0,035 1,5-1,8 1,4-1,7 0,25-0,35 - - - -

 

Equivalents

PN W. nr EN AISI Russia (GOST) Other
17HNM 1.6587 18CrNiMo7-6 - - -

 

Processes

welding YES
forging YES
rolling YES
nitriding YES
hardening YES temp. 840 – 870 [°C]
tempering YES temp. 630 – 650 [°C]

 

Hardness

after softening 205 HB