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Master Bond adhesives

Assab Steels 618 Plastic Mold Material
Categories: Metal; Ferrous Metal; Alloy Steel; Chrome-moly Steel
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 properties
  • Good machinability
  • High purity and good homogeneity
  • Uniform hardness in all dimensions

Applications:

  • Injection moulds for thermoplastics
  • Extrusion dies for thermoplastics
  • Blow moulds
  • Forming tools, press-brake dies (possibly flame hardened or nitrided)
  • Machine or structural components, shafts.

AISI P20 modified, W.-Nr. 1.2738
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Physical PropertiesMetricEnglishComments
Density 7.81 g/cc0.282 lb/in³
 7.75 g/cc
@Temperature 200 °C		0.280 lb/in³
@Temperature 392 °F
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 290 - 330290 - 330hardness supplied.
 325325tempering at 600°C
 450450tempering at 400°C
 500500tempering at 200°C
Tensile Strength, Ultimate 979 MPa
@Thickness 25.4 mm,
Temperature 200 °C		142000 psi
@Thickness 1.00 in,
Temperature 392 °F		Rm. Bar. 310 HB
 1080 MPa
@Diameter 25.4 mm		156000 psi
@Diameter 1.00 in		Rm. Bar. 310 HB
Tensile Strength, Yield  827 MPa
@Diameter 25.4 mm		120000 psi
@Diameter 1.00 in		Rp0.2. bar. 310 HB
 986 MPa
@Diameter 25.4 mm		143000 psi
@Diameter 1.00 in		Rp0.2. 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 GPa29700 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 PropertiesMetricEnglishComments
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 PropertiesMetricEnglishComments
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 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NASSAB24 / 15042

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