Bohler-Uddeholm BÖHLER M261 Extra Plastic Lens 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 M261 Extra Plastic Lens Mold Steel.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

VACUUM ARC REMELTED HARDENED AND TEMPERED PLASTIC LENS MOLD STEELBOHLER M261 follow current trends in tool and die-making:Excellent machinability coupled with higher hardnessGood dimensional stabilityExcellent nitriding propertiesAnd in the processing of plastics by offering:High compressive strengthHigh wear resistanceApplications: Hugh-precision plastic injection molds eg. for the product of camera parts, electronic parts and household itemsCompression molds for all types, eg for plastic containersmolds for elastomersMolds for the production of sealing rings(O-ring seal)Hot running systems

Physical Properties	Metric	English	Comments
Density	7.82 g/cc	0.283 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	30	30	Solution Annealed
	38 - 42	38 - 42	Stock Standard
	<= 44	<= 44	After Aging
Modulus of Elasticity	210 GPa	30500 ksi

Thermal Properties	Metric	English
CTE, linear	11.3 µm/m-°C @Temperature 100 °C	6.28 µin/in-°F @Temperature 212 °F
	12.2 µm/m-°C @Temperature 200 °C	6.78 µin/in-°F @Temperature 392 °F
	12.8 µm/m-°C @Temperature 300 °C	7.11 µin/in-°F @Temperature 572 °F
	13.2 µm/m-°C @Temperature 400 °C	7.33 µin/in-°F @Temperature 752 °F
	13.5 µm/m-°C @Temperature 500 °C	7.50 µin/in-°F @Temperature 932 °F
Specific Heat Capacity	0.460 J/g-°C	0.110 BTU/lb-°F
Thermal Conductivity	25.0 W/m-K @Temperature 20.0 °C	174 BTU-in/hr-ft²-°F @Temperature 68.0 °F
	26.4 W/m-K @Temperature 100 °C	183 BTU-in/hr-ft²-°F @Temperature 212 °F
	29.5 W/m-K @Temperature 200 °C	205 BTU-in/hr-ft²-°F @Temperature 392 °F
	31.5 W/m-K @Temperature 300 °C	219 BTU-in/hr-ft²-°F @Temperature 572 °F
	32.3 W/m-K @Temperature 400 °C	224 BTU-in/hr-ft²-°F @Temperature 752 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	1.2 %	1.2 %
Carbon, C	0.13 %	0.13 %
Chromium, Cr	0.35 %	0.35 %
Copper, Cu	1.2 %	1.2 %
Iron, Fe	91.32 %	91.32 %	As Balance
Manganese, Mn	2.0 %	2.0 %
Nickel, Ni	3.5 %	3.5 %
Silicon, Si	0.30 %	0.30 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000370 ohm-cm	0.0000370 ohm-cm

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