Stud bolts / bolting
ASTM A320 L43 — chemistry & properties
ASTM A320 L43 (Stud bolts / bolting, UNS G43400): chemical composition and mechanical properties. Heavy-section bolting for −101 °C service
Chemical composition (wt %)
| C | 0.38 – 0.43 |
| Mn | 0.6 – 0.85 |
| P | ≤ 0.035 |
| S | ≤ 0.04 |
| Si | 0.15 – 0.35 |
| Cr | 0.7 – 0.9 |
| Ni | 1.65 – 2 |
| Mo | 0.2 – 0.3 |
Mechanical properties
| Tensile strength, min | 860 MPa |
| Yield strength, min | 725 MPa |
| Elongation, min | 16 % |
| Hardness | Not specified |
| Impact test | −101 °C (27 J avg) |