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Assab Steels 618 Plastic Mold Material

Category	Metal , Ferrous Metal , Alloy Steel , Chrome-moly Steel
Manufacturer	Assab Steels
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Assab Steels 618 Plastic Mold Material.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

ASSAB 618 is a vacuum-degassed Cr-Ni-Mo-alloy steel which is supplied in the hardened and tempered condition. ASSAB 618 is manufactured to consistently high quality standards with a controlled sulfur content (max. 0.015%) giving a steel with the following characteristics: Good polishing and photo-etching propertiesGood machinabilityHigh purity and good homogeneityUniform hardness in all dimensionsApplications: Injection moulds for thermoplasticsExtrusion dies for thermoplasticsBlow mouldsForming tools, press-brake dies (possibly flame hardened or nitrided)Machine or structural components, shafts.AISI P20 modified, W.-Nr. 1.2738

Physical Properties	Metric	English	Comments
Density	7.81 g/cc	0.282 lb/in³
	7.75 g/cc @Temperature 200 °C	0.280 lb/in³ @Temperature 392 °F

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	290 - 330	290 - 330	hardness supplied.
	325	325	tempering at 600°C
	450	450	tempering at 400°C
	500	500	tempering at 200°C
Tensile Strength, Ultimate	979 MPa @Thickness 25.4 mm, Temperature 200 °C	142000 psi @Thickness 1.00 in, Temperature 392 °F	R<sub>m</sub>. Bar. 310 HB
	1080 MPa @Diameter 25.4 mm	156000 psi @Diameter 1.00 in	R<sub>m</sub>. Bar. 310 HB
Tensile Strength, Yield	827 MPa @Diameter 25.4 mm	120000 psi @Diameter 1.00 in	R<sub>p</sub>0.2. bar. 310 HB
	986 MPa @Diameter 25.4 mm	143000 psi @Diameter 1.00 in	R<sub>p</sub>0.2. bar. 310 HB
Elongation at Break	14 % @Thickness 25.4 mm	14 % @Thickness 1.00 in	bar; 310 HB
	15 % @Thickness 25.4 mm, Temperature 200 °C	15 % @Thickness 1.00 in, Temperature 392 °F	bar; 310 HB
Reduction of Area	49 % @Thickness 25.4 mm, Temperature 20.0 °C	49 % @Thickness 1.00 in, Temperature 68.0 °F	bar; 310 HB
	51 % @Thickness 25.4 mm, Temperature 200 °C	51 % @Thickness 1.00 in, Temperature 392 °F	bar; 310 HB
Modulus of Elasticity	205 GPa	29700 ksi
	200 GPa @Temperature 200 °C	29000 ksi @Temperature 392 °F
Impact Test	25.0 J @Diameter 25.4 mm, Temperature 20.0 °C	18.4 ft-lb @Diameter 1.00 in, Temperature 68.0 °F	310 HB
	42.0 J @Diameter 25.4 mm, Temperature 100 °C	31.0 ft-lb @Diameter 1.00 in, Temperature 212 °F	bar. 310 HB.
	50.0 J @Diameter 25.4 mm, Temperature 150 °C	36.9 ft-lb @Diameter 1.00 in, Temperature 302 °F	310 HB.

Thermal Properties	Metric	English
CTE, linear	12.7 µm/m-°C @Temperature 20.0 - 200 °C	7.06 µin/in-°F @Temperature 68.0 - 392 °F
Specific Heat Capacity	0.460 J/g-°C @Temperature 20.0 °C	0.110 BTU/lb-°F @Temperature 68.0 °F
Thermal Conductivity	29.1 W/m-K @Temperature 20.0 °C	202 BTU-in/hr-ft²-°F @Temperature 68.0 °F
	29.5 W/m-K @Temperature 200 °C	205 BTU-in/hr-ft²-°F @Temperature 392 °F

Component Elements Properties	Metric	English
Carbon, C	0.37 %	0.37 %
Chromium, Cr	2.0 %	2.0 %
Iron, Fe	94.73 %	94.73 %
Manganese, Mn	1.4 %	1.4 %
Molybdenum, Mo	0.20 %	0.20 %
Nickel, Ni	1.0 %	1.0 %
Silicon, Si	0.30 %	0.30 %

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