F3125 Chemical Requirements
Heat Analysis |
120ksi Type 1, % |
150ksi Type 1, % |
150ksi Type 3, % |
Carbon |
0.30 – 0.52 |
0.30 – 0.48 |
0.30 – 0.53 |
Manganese |
0.60 min |
0.60 min |
0.60 min |
Phosphorus |
0.035 max |
0.035 max |
0.035 |
Sulfur |
0.040 max |
0.040 max |
0.040 |
Silicon |
0.15 – 0.30 |
- |
|
Boron |
0.003 max |
0.003 max |
|
Copper |
- |
- |
0.20 – 0.60 |
Nickel |
- |
- |
0.20* min |
Chromium |
- |
- |
0.45 min |
Molybdenum |
- |
- |
0.10* min |
- Additional footnotes and A325 type 3 chemistries not included here for brevity
- 150ksi type 3- Either Nickel or Molybdenum must be present
|