AISI 8740 Low-Alloy Steel Bars and Forgings vs SAE 8740 Carbon Steel (Normalized at 870°C (1600 °F))
Property comparison of AISI 8740 Low-Alloy Steel Bars and Forgings and SAE 8740 Carbon Steel (Normalized at 870°C (1600 °F)), both carbon steel.
| Property | AISI 8740 Low-Alloy Steel Bars and Forgings | SAE 8740 Carbon Steel (Normalized at 870°C (1600 °F)) | Difference |
|---|---|---|---|
| Tensile strength | 861.8 MPa | 931 MPa | +8% |
| Elastic modulus | 199,948 MPa | 200,000 MPa | 0% |
| Shear modulus | 75,842 MPa | 76,923 MPa | +1% |
| Poisson ratio | 0.32 | 0.3 | -6% |
| Density | 7,833 kg/m³ | 7,850 kg/m³ | 0% |
| Specific heat | 462 J/kg·K | 462 J/kg·K | 0% |
Difference is SAE 8740 Carbon Steel (Normalized at 870°C (1600 °F)) relative to AISI 8740 Low-Alloy Steel Bars and Forgings. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- AISI 8740
- standard
- MIL-HDBK-5J
- heat treatment
- Quenched and tempered
- grade
- 8740
- standard
- SAE
- heat treatment
- Normalized at 870°C (1600 °F)
What else is in Engineering Database
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators