| Chemical Composition |
|
| Carbon (C) |
0.20% - 0.25% |
≤ 0.30% |
A795 has stricter control over carbon content with a narrower range. |
| Manganese (Mn) |
1.15% - 1.50% |
0.29% - 1.06% |
A795 has significantly higher manganese content, providing noticeable strengthening effects. |
| Molybdenum (Mo) |
0.45% - 0.60% |
≤ 0.15% (usually very low) |
A795 contains significant molybdenum, while A53 has almost none. |
| Nickel (Ni) |
0.40% - 0.60% |
≤ 0.40% (usually very low) |
A795 contains significant nickel, while A53 has almost none. |
| Chromium (Cr) |
0.80% - 1.10% |
≤ 0.40% (usually very low) |
A795 contains significant chromium, while A53 has almost none. |
| Phosphorus (P) |
≤ 0.025% |
≤ 0.035% |
A795 has stricter control over the impurity phosphorus. |
| Sulfur (S) |
≤ 0.010% |
≤ 0.035% |
A795 has stricter control over the impurity sulfur. |
| Mechanical Properties |
|
| Tensile Strength |
620 MPa - 795 MPa |
≥ 415 MPa |
The strength requirement for A795 is much higher than that for A53. |
| Yield Strength |
≥ 485 MPa |
≥ 240 MPa |
The yield strength of A795 is more than twice that of A53. |
| Elongation |
Usually ≥ 16%-20% (depending on specifications) |
Requires ≥ 23% (longitudinal specimen) |
A53 has a relatively higher requirement for plasticity. |
