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Master Bond adhesives

EDRO #7 Shock Resistant S7 Tool Steel
Categories: Metal; Ferrous Metal; Chrome-moly Steel; Tool Steel; Shock-Resisting Steel
Material Notes: EDRO #7™ is a chromium-molybdenum steel characterized by: high toughness, good wear resistance, high impact resistance, good through hardening properties, good machinability, and good dimensional stability during hardening.
EDRO #7™ is suitable for plastic molding including injection, compression and transfer molds.
EDRO #7™ has a favorable combination of toughness and wear resistance for heavy duty blanking and forming tools. It is ideally suited for shear blades and cropping tools, both hot and cold. Other applications include rivet punches, chisels, cold heading dies and forging tools.

Information provided by EDRO
Key Words: AISI S 7
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  7.70 g/cc
@Temperature 399 °C		0.278 lb/in³
@Temperature 750 °F		Hardened and tempered to 57 HRC
 7.75 g/cc
@Temperature 199 °C		0.280 lb/in³
@Temperature 390 °F		Hardened and tempered to 57 HRC
 7.81 g/cc
@Temperature 20.0 °C		0.282 lb/in³
@Temperature 68.0 °F		Hardened and tempered to 57 HRC
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 200200Delivery condition (soft annealed)
Hardness, Rockwell C  42
@Treatment Temp. 621 °C		42
@Treatment Temp. 1150 °F		Tempered twice for 2 hr at temperature
 50
@Treatment Temp. 538 °C		50
@Treatment Temp. 1000 °F		Tempered twice for 2 hr at temperature
 55
@Treatment Temp. 316 °C		55
@Treatment Temp. 600 °F		Tempered twice for 2 hr at temperature
 58
@Treatment Temp. 149 °C		58
@Treatment Temp. 300 °F		Tempered twice for 2 hr at temperature
Hardness, Vickers  850
@Treatment Temp. 570 °C		850
@Treatment Temp. 1060 °F		Tufftride process, 2 hr
 1000
@Treatment Temp. 525 °C		1000
@Treatment Temp. 977 °F		Nitriding in ammonia gas
Tensile Strength, Ultimate 1720 MPa250000 psi45 HRC
 2030 MPa295000 psi50 HRC
 2450 MPa355000 psi55 HRC
 2650 MPa385000 psi58 HRC
Tensile Strength, Yield  1380 MPa
@Strain 0.2 %		200000 psi
@Strain 0.2 %		45 HRC
 1650 MPa
@Strain 0.2 %		240000 psi
@Strain 0.2 %		50 HRC
 2030 MPa
@Strain 0.2 %		295000 psi
@Strain 0.2 %		55 HRC
 2070 MPa
@Strain 0.2 %		300000 psi
@Strain 0.2 %		58 HRC
Modulus of Elasticity  177 GPa
@Temperature 399 °C		25700 ksi
@Temperature 750 °F
 192 GPa
@Temperature 199 °C		27800 ksi
@Temperature 390 °F
 197 GPa
@Temperature 20.0 °C		28600 ksi
@Temperature 68.0 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear  12.1 µm/m-°C
@Temperature 20.0 - 199 °C		6.70 µin/in-°F
@Temperature 68.0 - 390 °F
 12.4 µm/m-°C
@Temperature 20.0 - 399 °C		6.90 µin/in-°F
@Temperature 68.0 - 750 °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
 29.8 W/m-K
@Temperature 199 °C		207 BTU-in/hr-ft²-°F
@Temperature 390 °F
 31.0 W/m-K
@Temperature 399 °C		215 BTU-in/hr-ft²-°F
@Temperature 750 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C 0.50 %0.50 %
Chromium, Cr 3.3 %3.3 %
Iron, Fe 93.7 %93.7 %As Balance
Manganese, Mn 0.80 %0.80 %
Molybdenum, Mo 1.4 %1.4 %
Silicon, Si 0.30 %0.30 %
 
Descriptive Properties
Color CodeBlack

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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NSEDRO010 / 142947




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