MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 160,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
Visit Zeus Inc. for Fluoropolymer Tubing
Schmolz + Bickenbach Thermodur® E38K Hot Work Die Steel
Categories: Metal; Ferrous Metal; Tool Steel; Hot Work Steel

Material Notes: Description: Thermodur® E38K is an electro slag remelted (ESR) modified H-11 die steel, developed for hot working applications where maximum mechanical strength (toughness) properties are required.

Characteristics: Superior toughness; Excellent hardenability; Good thermal conductivity; and Good polishability

Applications: Large high pressure die casting dies, Large hot forging dies and Aluminum extrusion tooling

Stress Relieving (Heat Treatment): 1200°F for 2 hours; Cooling: Cool slowly to 930°F in air; Hardness: <230 HB

Hardening (Heat Treatment): 1850°F- 1886°F Hold at temperature for 30 minutes; Cooling: Vacuum quench at 50°F/ min, to 1000°F then cool to below 150°F; Hardness: <54 HRC Quenched

Information provided by Schmolz + Bickenbach

Available Properties
  • Density
  • Hardness, Rockwell C
  • Hardness, Rockwell C
  • Hardness, Rockwell C
  • Hardness, Rockwell C
  • Hardness, Rockwell C
  • Hardness, Rockwell C
  • Tensile Strength, 44 HRC
  • Tensile Strength, 48 HRC
  • Tensile Strength, 52 HRC
  • Tensile Strength, Yield, 44 HRC
  • Tensile Strength, Yield, 48 HRC
  • Tensile Strength, Yield, 52 HRC
  • Elongation at Yield, 52 HRC
  • Elongation at Yield, 48 HRC
  • Elongation at Yield, 44 HRC
  • Reduction of Area, 52 HRC
  • Reduction of Area, 48 HRC
  • Reduction of Area, 44 HRC
  • CTE, linear
  • CTE, linear
  • CTE, linear
  • Thermal Conductivity
  • Thermal Conductivity
  • Thermal Conductivity
  • Annealing Temperature, Soft; Cooling: Furnace 20°F/hour to 1200°F/ Then air cool; < 170 HB
  • Carbon, C
  • Chromium, Cr
  • Iron, Fe
  • Manganese, Mn
  • Molybdenum, Mo
  • Silicon, Si
  • Sulfur, S
  • Vanadium, V
Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
), please click the button below.

Manufacturer Notes:
Schmolz + Bickenbach (Swiss Steel International)

Category Notes

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.


Rulon Bearings
Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2022 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.