UNS S31254 (254 SMO): 6 percent Mo Super Austenitic Stainless
ASTM/EN Standard · Published: 2026-06-01 · Updated: 2026-06-02
Specialized stainless steel grade providing specified combination of mechanical properties and corrosion resistance for demanding industrial applications.
Specialized stainless steel grade providing specified combination of mechanical properties and corrosion resistance for demanding industrial applications.
Quick Facts
| Category | Stainless Steel |
| Standard | ASTM/EN Standard |
| Density | 8.00 g/cm³ |
| Yield Strength | 300 MPa (44 ksi) |
| Tensile Strength | 650 MPa (94 ksi) |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
What are the primary applications of this stainless grade?
This grade is specified for applications requiring the specific combination of corrosion resistance, mechanical properties, and fabricability that its composition provides. Consult a materials engineer for application-specific selection guidance.
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu