ATI 418 SPL Stainless Steel (Greek Ascoloy) vs SAE 403 Stainless Steel (Tempered bar)
Property comparison of ATI 418 SPL Stainless Steel (Greek Ascoloy) and SAE 403 Stainless Steel (Tempered bar), both stainless steel.
| Property | ATI 418 SPL Stainless Steel (Greek Ascoloy) | SAE 403 Stainless Steel (Tempered bar) | Difference |
|---|---|---|---|
| Yield strength | 586 MPa | 585 MPa | 0% |
| Tensile strength | 793 MPa | 765 MPa | -4% |
| Elongation | 18 % | 23 % | +28% |
| Elastic modulus | 200,000 MPa | 193,000 MPa | -4% |
| Density | 7,860 kg/m³ | 7,850 kg/m³ | 0% |
| Specific heat | 460 J/kg·K | 460 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.00001 1/K | 0.00001 1/K | +7% |
Difference is SAE 403 Stainless Steel (Tempered bar) relative to ATI 418 SPL Stainless Steel (Greek Ascoloy). 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
- UNS S41800
- standard
- AMS 5508
- heat treatment
- Annealed
- grade
- 403
- standard
- SAE
- heat treatment
- Tempered bar
About 400-series stainless steels
Martensitic and ferritic stainless steels carry less nickel than the 300-series and remain magnetic. 410 and 420 are hardenable by quench and temper and are used for cutlery, shafts, and valve parts. 430 stays soft and is used for cosmetic trim and mild corrosion service. Compared to 300-series grades they trade general corrosion resistance for hardenability.
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