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Schmolz + Bickenbach P-20 Modified Plastic Mold Steel
Categories: Metal; Ferrous Metal; Tool Steel; Mold Steel
Material Notes: Description: P-20 Modified is an improved pre-hardened mold steel that has been specially designed for large plastic molds; The material is forged on a 5000 ton press assuring maximum deformation during the forging process; Hardness loss in large cross sections is minimal

Characteristics: Good polishability; Good compressive strength; Minimum hardness loss in large cross section

Applications: Injection molds, Compression molds, Mold frame, Forming tools and Die holder

Stress Relieving (Heat Treatment): 850°F-900°F hold 1 hr/in; Cooling: Air cool; Note: Large cross sections require accurate control of temperatures and times

Information provided by Schmolz + Bickenbach
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 7.86 g/cc0.284 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell C  33
@Treatment Temp. 621 °C,
Time 7200 sec		33
@Treatment Temp. 1150 °F,
Time 2.00 hour
 35
@Treatment Temp. 593 °C,
Time 7200 sec		35
@Treatment Temp. 1100 °F,
Time 2.00 hour
 40
@Treatment Temp. 566 °C,
Time 7200 sec		40
@Treatment Temp. 1050 °F,
Time 2.00 hour
 43
@Treatment Temp. 538 °C,
Time 7200 sec		43
@Treatment Temp. 1000 °F,
Time 2.00 hour
 47
@Treatment Temp. 482 °C,
Time 7200 sec		47
@Treatment Temp. 900 °F,
Time 2.00 hour
 50
@Treatment Temp. 427 °C,
Time 7200 sec		50
@Treatment Temp. 800 °F,
Time 2.00 hour
 51
@Treatment Temp. 371 °C,
Time 7200 sec		51
@Treatment Temp. 700 °F,
Time 2.00 hour
Tensile Strength 1030 MPa
@Temperature -5.56 °C		150000 psi
@Temperature 22.0 °F		Hardened and tempered to 34 HRC
Tensile Strength, Yield 896 MPa
@Temperature 22.0 °C		130000 psi
@Temperature 71.6 °F		Hardened and tempered to 34 HRC
Elongation at Yield 15 %
@Temperature 22.0 °C		15 %
@Temperature 71.6 °F		Hardened and tempered to 34 HRC
Reduction of Area 35 %
@Temperature 22.0 °C		35 %
@Temperature 71.6 °F		Hardened and tempered to 34 HRC
 
Thermal PropertiesMetricEnglishComments
CTE, linear  12.2 µm/m-°C
@Temperature 21.1 - 93.3 °C		6.80 µin/in-°F
@Temperature 70.0 - 200 °F
 12.6 µm/m-°C
@Temperature 21.1 - 204 °C		7.00 µin/in-°F
@Temperature 70.0 - 400 °F
 12.8 µm/m-°C
@Temperature 21.1 - 302 °C		7.10 µin/in-°F
@Temperature 70.0 - 575 °F
Thermal Conductivity  29.1 W/m-K
@Temperature 21.1 °C		202 BTU-in/hr-ft²-°F
@Temperature 70.0 °F
 30.1 W/m-K
@Temperature 204 °C		209 BTU-in/hr-ft²-°F
@Temperature 400 °F
 31.1 W/m-K
@Temperature 427 °C		216 BTU-in/hr-ft²-°F
@Temperature 800 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.34 %0.34 %
Chromium, Cr 1.75 %1.75 %
Iron, Fe 96.31 %96.31 %
Manganese, Mn 0.80 %0.80 %
Molybdenum, Mo 0.40 %0.40 %
Silicon, Si 0.40 %0.40 %

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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NSCHMO004 / 125877

Specialty Compounds RTP Company




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