ASTM A299 Grade A: Mn-Si Pressure Vessel Steel
ASTM/EN Standard · Published: 2026-06-01 · Updated: 2026-06-02
Specialized carbon steel grade for structural and pressure vessel applications with appropriate quality assurance for its intended service. Consult the material standard for complete chemistry, testing, and certification requirements.
Specialized carbon steel grade for structural and pressure vessel applications with appropriate quality assurance for its intended service. Consult the material standard for complete chemistry, testing, and certification requirements.
Quick Facts
| Category | Carbon Steel |
| Standard | ASTM/EN Standard |
| Density | 7.85 g/cm³ |
| Yield Strength | 275 MPa (40 ksi) |
| Tensile Strength | 515-655 MPa |
Global Equivalents & Cross-Reference
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Frequently Asked Questions
What standards govern this material?
This grade is specified under its national/international standard with mandatory chemical composition limits, mechanical property testing, and quality assurance requirements. Always reference the current edition of the standard for design purposes.
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