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Bohler-Uddeholm BÖHLER W303 ISODISC® Hot Work Tool Steel

Category Metal , Ferrous Metal , Tool Steel , Hot Work Steel
Manufacturer Bohler-Uddeholm
Trade Name BÖHLER
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Bohler-Uddeholm BÖHLER W303 ISODISC® Hot Work Tool Steel.pdf
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Material Notes:
Description: Hot work tool steel featuring excellent hot tensile properties, high retention of hardness, good toughness and resistance to heat checking, admits water cooling. BOHLER W303 is also available in the special grades ISODISC and ISOBLOC with improved homogeneity and increased toughness.Applications: Heavy duty hot work tools and dies, mainly for light alloy processing: mandrels, dies and containers for metal tube and rod extrusion; hot extrusion equipment; tools and dies for the manufacture of hollow bodies, screws, rivets, nuts and bolts. Die casting equipment, forming dies, die inserts, hot shear blades, and plastic molding dies.
Physical Properties Metric English Comments
Density 7.65 g/cc

@Temperature 600 °C
 0.276 lb/in³

@Temperature 1110 °F
7.69 g/cc

@Temperature 500 °C
 0.278 lb/in³

@Temperature 932 °F
7.85 g/cc

@Temperature 20.0 °C
 0.284 lb/in³

@Temperature 68.0 °F
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 1100 - 1380 MPa

@Temperature 315 °C
 160000 - 200000 psi

@Temperature 599 °F
 varies with heat treatment
1200 - 1590 MPa

@Temperature 20.0 °C
 174000 - 231000 psi

@Temperature 68.0 °F
 varies with heat treatment
Tensile Strength, Yield 900 - 1170 MPa

@Strain 0.200 %,
Temperature 315 °C
 131000 - 170000 psi

@Strain 0.200 %,
Temperature 599 °F
1000 - 1380 MPa

@Strain 0.200 %,
Temperature 20.0 °C
 145000 - 200000 psi

@Strain 0.200 %,
Temperature 68.0 °F
Reduction of Area 50 %

@Temperature 20.0 °C
 50 %

@Temperature 68.0 °F
50 %

@Temperature 315 °C
 50 %

@Temperature 599 °F
Modulus of Elasticity 165 GPa

@Temperature 600 °C
 23900 ksi

@Temperature 1110 °F
176 GPa

@Temperature 500 °C
 25500 ksi

@Temperature 932 °F
215 GPa

@Temperature 20.0 °C
 31200 ksi

@Temperature 68.0 °F
Thermal Properties Metric English Comments
CTE, linear 11.5 µm/m-°C

@Temperature 100 °C
 6.39 µin/in-°F

@Temperature 212 °F
12.0 µm/m-°C

@Temperature 200 °C
 6.67 µin/in-°F

@Temperature 392 °F
12.2 µm/m-°C

@Temperature 300 °C
 6.78 µin/in-°F

@Temperature 572 °F
12.5 µm/m-°C

@Temperature 400 °C
 6.94 µin/in-°F

@Temperature 752 °F
12.9 µm/m-°C

@Temperature 500 °C
 7.17 µin/in-°F

@Temperature 932 °F
13.0 µm/m-°C

@Temperature 600 °C
 7.22 µin/in-°F

@Temperature 1110 °F
13.2 µm/m-°C

@Temperature 700 °C
 7.33 µin/in-°F

@Temperature 1290 °F
Specific Heat Capacity 0.460 J/g-°C

@Temperature 20.0 °C
 0.110 BTU/lb-°F

@Temperature 68.0 °F
0.548 J/g-°C

@Temperature 500 °C
 0.131 BTU/lb-°F

@Temperature 932 °F
0.590 J/g-°C

@Temperature 600 °C
 0.141 BTU/lb-°F

@Temperature 1110 °F
Thermal Conductivity 28.8 W/m-K

@Temperature 700 °C
 200 BTU-in/hr-ft²-°F

@Temperature 1290 °F
 Hardened and tempered
29.0 W/m-K

@Temperature 100 °C
 201 BTU-in/hr-ft²-°F

@Temperature 212 °F
 Hardened and tempered
29.2 W/m-K

@Temperature 600 °C
 203 BTU-in/hr-ft²-°F

@Temperature 1110 °F
 Hardened and tempered
30.4 W/m-K

@Temperature 500 °C
 211 BTU-in/hr-ft²-°F

@Temperature 932 °F
 Hardened and tempered
30.4 W/m-K

@Temperature 200 °C
 211 BTU-in/hr-ft²-°F

@Temperature 392 °F
 Hardened and tempered
31.1 W/m-K

@Temperature 300 °C
 216 BTU-in/hr-ft²-°F

@Temperature 572 °F
 Hardened and tempered
31.1 W/m-K

@Temperature 400 °C
 216 BTU-in/hr-ft²-°F

@Temperature 752 °F
 Hardened and tempered
Component Elements Properties Metric English Comments
Carbon, C 0.38 %
0.38 %
Chromium, Cr 5.0 %
5.0 %
Iron, Fe 90.47 %
90.47 %
As remainder
Manganese, Mn 0.40 %
0.40 %
Molybdenum, Mo 2.8 %
2.8 %
Silicon, Si 0.40 %
0.40 %
Vanadium, V 0.55 %
0.55 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000500 ohm-cm

@Temperature 20.0 °C
 0.0000500 ohm-cm

@Temperature 68.0 °F
0.0000590 ohm-cm

@Temperature 600 °C
 0.0000590 ohm-cm

@Temperature 1110 °F
0.0000840 ohm-cm

@Temperature 500 °C
 0.0000840 ohm-cm

@Temperature 932 °F
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