Cold Work Tool Steel bar O1/1.2510 – GMTC

O1

  • 1.2510, T31501

SpecificationASTM A681

Thanks to its tungsten and higher chromium content, the O1 tool steel has good wear resistance and polishing performance.
O1 has good durability, wear resistance, and fine grain size. After heat treatment, it has very small dimensional variation. It is suitable for measurement tools and drills.

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Introduction

Product properties

˙High wear resistance

˙Fine grain size

˙Good toughness

˙Good durability


Industrial Applications

˙Tools

˙Mold

˙Drills

˙Rails

˙Measurement tools

Specifications

Chemical composition (wt. %)

Element
C
Si
Mn
P
S
Cr
V
W
Ni+Cu
Min.
0.85
0.10
1.00
-
-
0.40
-
0.40
-
Max.
1.00
0.50
1.40
0.030
0.030
0.70
0.30
0.60
0.75

Physical Property

Density (g/cm^3)
7.7

Modulus of elasticity

Temperature (℃)
Gpa
20
193

Thermal Expansion Coefficient

Temperature (℃)
10^-6/℃
20~260
10.6

Thermal Conductivity

Temperature (℃)
W/m·K
20
33.4

Mechanical Property

Items
Specification Values
Annealing Hardness (HBW)
212 max.
Quenching & Tempering Hardness (HRC)
59 min.

Size Ranges

Products
Diameter (mm)
Length (mm)
Rolled bar
10~95
3,000~5,700
Forged bar
95.2~440
3,000~5,700
Billet
130x130, 140x140, 150x150, 160x160
7,000 max

Heat Treatment Conditions

Heat Treatment Conditions
800℃ Oil Cooling +200℃ Air Cooling

Related Application

Click any of application links below to view their detailed introduction

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