AISI O-1



Description


This grade gives higher hardness values than AISI O-1 and a better wear-resistance owing to tungsten presence, whereas preserving a good toughness.

Equivalent Grades

American German Japanese China Poland
  (W.Nr) (DIN)      
AISI O-1 1.2510100MnCrW4SKS39CrWMn-

Chemical Composition (AISI O-1)

  C Si Mn P S Cr Mo V W Co Ni
AISI O-1

Properties

Thermal Conductivity at °C

20

350

700

W/(m • K)

33.8

32.2

31




Applications

  • Blanking and stamping dies for cutting sheets
  • Threading tools
  • Drills
  • Broaches
  • Gauges
  • Measuring tools
  • Plastic moulds
  • Shear blades
  • Guide rails



Heat Treatment

Soft annealing °C

Cooling

Hardness HB

750 - 780

Furnace

max. 230


Stress-relief annealing °C

Cooling

approx. 650

Furnace


Hardening °C

Quenching

Hardness after quenching HRC

780 - 820

Air, oil or saltbath, 180-220 °C

65


Tempering °C after quenching

100

200

300

400

HRC

63

62

58

53.5




Tempreing Curve: