O1 steel equivalent

1.2510 steel

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Description

1.2510, 100MnCrW4, O1, SKS3, DF2, DF3

What is 01 tool steel?

2510 material with chromium-manganese content possessed good machinability, mechanical wear resistance and edge holding quality. Vanadium-Wolfram content reduces high working temperature wear and retention of temper temperature.

 

DIN AISI JIS  1.2510 Chemical Composition
C Si Mn P S Co Cr Mo Ni V W Cu
1.2510 O1 SKS3 0.90 to 1.05 0.15 to 0.35 1.00 to 1.20 < 0.035 < 0.035 – 0.15 to 0.35 – – 0.05 to 0.15 0.50 to 0.70 –

 

Relevant Steel Specification of AISI O1 Tool Steel equivalent

Country USA German Japan
Standard ASTM A681 DIN EN ISO 4957 JIS G4404
Grades O1 1.2510/100MnCrW4 SKS3

 

1.2510 Steel Mechanical Properties

Properties Metric Imperial
Hardness, Brinell (soft annealed -delivery condition) 190 190
Hardness, Rockwell C (tempering temp 300-1200°F) 34.0-64.0 34.0-64.0
Elastic modulus (hardened to 62 HRC) 193 GPa 28000 ksi
Elastic modulus (@399°C/750°F, hardened to 62 HRC ) 172 GPa 25000 ksi
Elastic modulus (@191°C/375°F, hardened to 62 HRC) 186 GPa 27000 ksi
Compressive yield strength (0.2%, hardened to 50 HRC) 1350 MPa 196000 psi
Compressive yield strength (0.2%, hardened to 55 HRC) 1800 MPa 261000 psi
Compressive yield strength (0.2%, hardened to 60 HRC) 2150 MPa 312000 psi
Compressive yield strength (0.2%, hardened to 62 HRC) 2200 MPa 319000 p

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What is 01 tool steel?

General purpose oil hardening medium alloyed cold work tool steel with minimum size change, high impact strength

and hardenability, good edge holding, abrasion resistance and machinability properties, dimensionally stable during

heat treatment, high surface hardness and sufficent toughness after hardening and tempering.

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 1.2510 steel Heat treatment

Stress relieving Temperature   :  Approx. 650 °C in the annealed state

Duration                                       : 1 hour per 50 mm wall thickness

Soft annealing Temperature    : 750 °C

Duration                                       : 1 hour per 25 mm wall thickness

Hardening Temperature          : 830 °C

Duration                                      : 1 minute per mm wall thickness

Quenching hardness Max. 64 HRC in oil, hot bath or vacuum

Tempering Temperature          : See tempering curve

Duration                                      : 1 hour per 25 mm wall thickness

Cooling                                        : Air

Working hardness 58–62 HRC

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Is O1 tool steel good for knives?
O1 is a good steel for knives with great qualities like high hardness, excellent wear resistance, high toughness, high polish performance, and great edge retention. Its only weakness is poor corrosion resistance due to low chromium content.
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How hard can you get O1 tool steel?
O1 Tool Steel is the original oil-hardening, “non-shrinking” tool steel that can be hardened to the Rockwell C 65 range from a low austenitizing temperature. O1 is a general-purpose tool steel that is typically used in applications where alloy steels cannot provide sufficient hardness, strength, and wear resistance.

 

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