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Crucible Steel KETOS® Tool Steel, AISI O1

Category Metal , Ferrous Metal , Tool Steel , Oil-Hardening Steel
Manufacturer Crucible Steel
Trade Name KETOS®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Crucible Steel KETOS® Tool Steel, AISI O1.pdf
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Material Notes:
Ketos is an oil-hardening tool steel which may be hardened from fairly low temperatures with little size change. This grade combines deep-hardening qualities with a fine-grained structure, affording good initial production runs, and good continued production after grinding.Information provided by Crucible Industries
Physical Properties Metric English Comments
Density 7.83 g/cc
0.283 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell 187 - 221
187 - 221
Hardness, Rockwell C 63 - 65
63 - 65
hardened at 1475°F then quenched
39 - 41

@Tempering Temp. 538 °C
 39 - 41

@Tempering Temp. 1000 °F
 hardened at 1475F then tempered
43 - 45

@Tempering Temp. 482 °C
 43 - 45

@Tempering Temp. 900 °F
 hardened at 1475F then tempered
48 - 50

@Tempering Temp. 427 °C
 48 - 50

@Tempering Temp. 800 °F
 hardened at 1475F then tempered
51 - 53

@Tempering Temp. 371 °C
 51 - 53

@Tempering Temp. 700 °F
 hardened at 1475F then tempered
55 - 57

@Tempering Temp. 316 °C
 55 - 57

@Tempering Temp. 600 °F
 hardened at 1475F then tempered
58 - 60

@Tempering Temp. 260 °C
 58 - 60

@Tempering Temp. 500 °F
 hardened at 1475F then tempered
60 - 62

@Tempering Temp. 232 °C
 60 - 62

@Tempering Temp. 450 °F
 hardened at 1475F then tempered
61 - 63

@Tempering Temp. 204 °C
 61 - 63

@Tempering Temp. 400 °F
 hardened at 1475F then tempered
62 - 64

@Tempering Temp. 177 °C
 62 - 64

@Tempering Temp. 350 °F
 hardened at 1475F then tempered
63 - 65

@Tempering Temp. 149 °C
 63 - 65

@Tempering Temp. 300 °F
 hardened at 1475F then tempered
Modulus of Elasticity 207 GPa
30000 ksi
Charpy Impact 19.0 J

@Tempering Temp. 149 °C
 14.0 ft-lb

@Tempering Temp. 300 °F
 hardened at 1475°F then tempered; C-notch
38.0 J

@Tempering Temp. 177 °C
 28.0 ft-lb

@Tempering Temp. 350 °F
 hardened at 1475°F then tempered; C-notch
40.7 J

@Tempering Temp. 204 °C
 30.0 ft-lb

@Tempering Temp. 400 °F
 hardened at 1475°F then tempered; C-notch
40.7 J

@Tempering Temp. 260 °C
 30.0 ft-lb

@Tempering Temp. 500 °F
 hardened at 1475°F then tempered; C-notch
43.4 J

@Tempering Temp. 316 °C
 32.0 ft-lb

@Tempering Temp. 600 °F
 hardened at 1475°F then tempered; C-notch
Thermal Properties Metric English Comments
CTE, linear 12.6 µm/m-°C

@Temperature 21.1 - 204 °C
 7.00 µin/in-°F

@Temperature 70.0 - 400 °F
13.3 µm/m-°C

@Temperature 21.1 - 427 °C
 7.40 µin/in-°F

@Temperature 70.0 - 800 °F
14.0 µm/m-°C

@Temperature 21.1 - 538 °C
 7.80 µin/in-°F

@Temperature 70.0 - 1000 °F
Thermal Conductivity 34.5 W/m-K

@Temperature 95.0 °C
 239 BTU-in/hr-ft²-°F

@Temperature 203 °F
Component Elements Properties Metric English Comments
Carbon, C 0.90 %
0.90 %
Chromium, Cr 0.50 %
0.50 %
Iron, Fe 96.55 %
96.55 %
as balance
Manganese, Mn 1.25 %
1.25 %
Silicon, Si 0.30 %
0.30 %
Tungsten, W 0.50 %
0.50 %
Chemical Properties Metric English Comments
Critical Temperature 743 °C
1370 °F
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