Mat.No. 1.7325, DIN 25MoCr4, AISI 8625

Designation by Standards

Chemical Composition (in weight %)

Description
Steel intended for direct hardening.

Applications
Gear components of all kind, link components, arbors, axles, bolts, bushes, coupling boxes for direct hardening. 

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10³ x N/mm²]: 210 
Density [g/cm³]: 7.85

Soft Annealing
Heat to 650-700^oC, cool slowly. Intermediate annealing: 650-680^oC.

Carburizing
Temperature: 900-950^oC, water, oil or hot quenching 160-250^oC.

Core Hardening
Temperature: 890-920^oC.

Surface Hardening
Harden from a temperature of 780-820^oC followed by water or oil quenching.

Tempering
Tempering temperature: 150-210^oC.

Hardenability Diagram

Click the image to enlarge the diagram.

Forging
Hot forming temperature: 1150-850^oC. 

Machinability
No data.

Forms manufactured: Please see the Dimensional Sales Program. 

Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.