Astm A279 Pdf Jun 2026

| Grade | Hardness (HRC) | Tensile Strength (ksi) | Yield Strength (ksi) | Elongation (%) | | --- | --- | --- | --- | --- | | M1 | 58-62 | 150-200 | 100-150 | 10-15 | | M2 | 60-64 | 170-220 | 120-170 | 10-15 | | M3 | 62-65 | 180-230 | 130-180 | 10-15 | | M4 | 62-65 | 180-230 | 130-180 | 10-15 | | M5 | 62-65 | 180-230 | 130-180 | 10-15 | | M6 | 60-64 | 170-220 | 120-170 | 10-15 | | M7 | 60-64 | 170-220 | 120-170 | 10-15 | | M10 | 60-64 | 170-220 | 120-170 | 10-15 | | M42 | 62-65 | 180-230 | 130-180 | 10-15 |

The standard sets minimum thresholds for: Astm A279 Pdf

While less stringent than standards for nuclear applications, A279 allowed for non-destructive testing methods such as: | Grade | Hardness (HRC) | Tensile Strength

: Often confused with A279 due to the similar number, this is the current active specification for stainless steel bars and shapes used in boilers and pressure vessels. Historical Overview of the Test Astm A279 Pdf