COLD WORK TOOL STEEL O-1

Type O1 oil-solidifying cold work steel comprises of chromium, manganese, and tungsten and is moderately cheap.

A universally useful oil hardening tool steel reasonable for back up and punch holder plates. Components of this grade incorporate a decent mix of high surface hardness and toughness after hardening and tempering.


Oil solidifying tool steel for assembling of cutting instruments, blanking and punching devices. Machine knives, threading tools.



Chemical Composition


Element
Min
Max
Carbon, C0.901.05
Manganese, Mn1.001.20
Silicon,Si0.150.35
Molybdenum, Mo----
Chromium,Cr0.500.70
W0.500.70
V0.050.15
Co----

Physical Properties


Properties
Metric
Imperial
Density (hardened to 62 HRC)7.81 g/cm 30.282 lb/in 3
Density (@399°C/ 750°F, hardened to 62 HRC)7.70 g/cm 30.278 lb/in 3
Density (@191°C/ 375°F, hardened to 62 HRC)7.75 g/cm 30.280 lb/in 3
Melting point1421°C2590°F

Mechanical Properties


Properties
Metric
Imperial
Hardness, Brinell (soft annealed -delivery condition)190190
Hardness, Rockwell C (tempering temp 300-1200°F)34.0-64.034.0-64.0
Elastic modulus (hardened to 62 HRC)193 GPa28000 ksi
Elastic modulus (@399°C/750°F, hardened to 62 HRC )172 GPa25000 ksi
Elastic modulus (@191°C/375°F, hardened to 62 HRC)186 GPa27000 ksi
Compressive yield strength (0.2%, hardened to 50 HRC)1350 MPa196000 psi
Compressive yield strength (0.2%, hardened to 55 HRC)1800 MPa261000 psi
Compressive yield strength (0.2%, hardened to 60 HRC)2150 MPa312000 psi
Compressive yield strength (0.2%, hardened to 62 HRC)2200 MPa319000 psi

Thermal Properties


Properties
 
Conditions
 
T (°C)Treatment
Thermal expansion10.6 x 10 -6 /ºC20-260-


Features


   Heat Treatment

   Forging

   Annealing

   Martempering

   Quenching

   Hardening

   Cold Work

   Forming

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