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Bohler-Uddeholm BÖHLER M268 VMR® Plastic Mold Steel

Category Metal , Ferrous Metal , Tool Steel , Mold Steel
Manufacturer Bohler-Uddeholm
Trade Name BÖHLER
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Bohler-Uddeholm BÖHLER M268 VMR® Plastic Mold Steel.pdf
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Material Notes:
Description: HBÖHLER M268 VMR is a hardened and tempered plastic mould steel with excellent cleanliness for best polishability. The hardness is constant over the entire cross-section of the steel block, even at large sizes, due to the addition of nickel.Applications: Moulds for plastics processing, components for general mechanical engineering and tool manufacture where highest polishability and fatigue strength are required.
Physical Properties Metric English Comments
Density 7.85 g/cc
0.284 lb/in³
Mechanical Properties Metric English Comments
Hardness, Brinell 310 - 350
310 - 350
Modulus of Elasticity 210 GPa
30500 ksi
Thermal Properties Metric English Comments
CTE, linear 12.8 µm/m-°C

@Temperature 100 °C
7.11 µin/in-°F

@Temperature 212 °F
13.0 µm/m-°C

@Temperature 200 °C
7.22 µin/in-°F

@Temperature 392 °F
13.8 µm/m-°C

@Temperature 300 °C
7.67 µin/in-°F

@Temperature 572 °F
14.0 µm/m-°C

@Temperature 400 °C
7.78 µin/in-°F

@Temperature 752 °F
14.2 µm/m-°C

@Temperature 500 °C
7.89 µin/in-°F

@Temperature 932 °F
14.2 µm/m-°C

@Temperature 600 °C
7.89 µin/in-°F

@Temperature 1110 °F
14.5 µm/m-°C

@Temperature 700 °C
8.06 µin/in-°F

@Temperature 1290 °F
Specific Heat Capacity 0.460 J/g-°C
0.110 BTU/lb-°F
Thermal Conductivity 28.0 W/m-K

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

@Temperature 1290 °F
31.1 W/m-K

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

@Temperature 1110 °F
32.8 W/m-K

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

@Temperature 932 °F
33.9 W/m-K

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

@Temperature 752 °F
34.3 W/m-K

@Temperature 20.0 °C
238 BTU-in/hr-ft²-°F

@Temperature 68.0 °F
34.8 W/m-K

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

@Temperature 572 °F
35.1 W/m-K

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

@Temperature 212 °F
35.3 W/m-K

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

@Temperature 392 °F
Component Elements Properties Metric English Comments
Carbon, C 0.38 %
0.38 %
Chromium, Cr 2.0 %
2.0 %
Iron, Fe 94.52 %
94.52 %
As remainder
Manganese, Mn 1.5 %
1.5 %
Molybdenum, Mo 0.20 %
0.20 %
Nickel, Ni 1.1 %
1.1 %
Silicon, Si 0.30 %
0.30 %
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