Martensitic Stainless Steels : 4125

Main Characteristic

4125 is in a class of Martensitic which can hardening to optimize highest hardness among the group
this result in high abrasive resistance. Can stand for corrosive resistance after quenching and tempering
Easy to hardening. Quenching also possible by oil or air and can do temper hardening which will protect
workpiece from distorted or crack after hardening. Machinability as well as welding ability is very low.
Suitable for hardness application which require wear and corrosive resistance.

OutStanding Properties

   High resistance to wear and abrasive
   High corrosion resistance
   High hardness after hardening
   High ability in hardening and can apply by various type of hardening.
   Can do polishing until mirror level.
   Low Machinability
   Low welding ability
   Magnetize ability in every condition
   Can do Nitriding


   Plastic mold that require high torsion and need to stand for corrosion and rust
   Stamping mold for can
   Bearing and case
   Valve and pump parts
   Nozzle in various application

SUS 440C
1.4125 / X105CrMo17
อบอ่อน ความแข็งสูงสุด 270 HB
ชุบแข็งและอบคืนตัว ความแข็ง 58-60 HRC
Chemical Composition
ส่วนผสมทาง เคมี (%wt.)
สภาพจําหน่าย Selling Condition
สภาพหลังชุบ After Quenching
C Cr Mo
0.95-1.20 16.0-18.0 0.40-0.80    
4125 คุณสมบัติทั่วไป (General Characteristic)