| Gray Cast Iron, ASTM A 48 Class 40 | |
|---|---|
| Categories: | MetalFerrous MetalCast IronGray Cast Iron |
| Material Notes: | Carbon listed in the composition table is the total carbon. Can be oil quench hardened from 860°C to attain a Rockwell C 50 minimum surface hardness. Data provided by the manufacturer, Siltin Industries, Inc. |
| 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. |
 Printer friendly version Download to Excel (requires Excel and Windows)
Add to Folder: | |
Export data to your CAD/FEA program| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 7.15 g/cc | 0.258 lb/in³ | Typical for Gray Cast Iron |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Brinell | 183 – 234 | 183 – 234 | |
| Hardness, Knoop | 258 | 258 | Converted from Brinell |
| Hardness, Rockwell B | 97 | 97 | Converted from Brinell |
| Hardness, Rockwell C | 20 | 20 | Converted from Brinell |
| Hardness, Vickers | 246 | 246 | Converted from Brinell |
| Tensile Strength, Ultimate | >= 276 MPa | >= 40000 psi | |
| Ultimate Compressive Strength | >= 1034 MPa | >= 150000 psi | |
| Machinability | 0.0 % | 0.0 % | Very good machinability. No numerical rating available. |
| Component Elements Properties | Metric | English | Comments |
| Carbon, C | 3.25 – 3.5 % | 3.25 – 3.5 % | |
| Chromium, Cr | 0.050 – 0.45 % | 0.050 – 0.45 % | |
| Copper, Cu | 0.15 – 0.40 % | 0.15 – 0.40 % | |
| Iron, Fe | 91.9 – 94.2 % | 91.9 – 94.2 % | As Balance |
| Manganese, Mn | 0.50 – 0.90 % | 0.50 – 0.90 % | |
| Molybdenum, Mo | 0.050 – 0.10 % | 0.050 – 0.10 % | |
| Nickel, Ni | 0.050 – 0.20 % | 0.050 – 0.20 % | |
| Phosphorus, P | <= 0.12 % | <= 0.12 % | |
| Silicon, Si | 1.8 – 2.3 % | 1.8 – 2.3 % | |
| Sulfur, S | <= 0.15 % | <= 0.15 % | |
References for this datasheet.
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.
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.