| Type 1 | Type lb | Type 2 | Type 2b | Type 3 | Type 4 | Type 5 | Type 6 | |
|---|---|---|---|---|---|---|---|---|
| Carbon | 3.00 | 3.00 | 3.00 max | 3.00 | 2.60 | 2.60 | 2.40 | 3.00 |
| Silicon | 1.00 – 2.80 | 1.00 – 2.80 | 1.00 – 2.80 | 1.00 – 2.80 | 1.00 – 2.00 | 5.00 – 6.00 | 1.00 – 2.00 | 1.50 – 2.50 |
| Manganese | 0.5 – 1.5 | 0.5 – 1.5 | 0.5 -1.05 | 0.5 -1.05 | 0.5 -1.05 | 0.5 -1.05 | 0.5 -1.05 | 0.5 -1.05 |
| Nickel | 13.50 – 17.50 | 13.50 – 17.50 | 18.00 – 22.00 | 18.00 – 22.00 | 28.00 – 32.00 | 28.00 – 32.00 | 34.00 – 36.00 | 18.00 – 22.00 |
| Copper | 5.50 – 7.50 | 5.50 – 7.50 | .50 max | .50 max | .50 max | .50 max | .50 max | 3.50 – 5.50 |
| Chromium | 1.5 – 2.5 | 2.50 – 3.50 | 1.5 – 2.5 | 3.00 – 6.00* | 2.50 – 3.50 | 4.50 – 5.50 | 0.10 max | 1.00 – 2.00 |
| Sulfur | 0.12 max | 0.12 max | 0.12 max | 0.12 max | 0.12 max | 0.12 max | 0.12 max | 0.12 max |
| Molybdenum | —- | —- | —- | —- | —- | —- | —- | 1.00 |
| Tensile Strengtd min, ksi (MPa) | 25 (172) | 30 (207) | 25 (172) | 30 (207) | 25 (172) | 25 (172) | 20 (138) | 25 (172) |
| Brinell Hardness (3000 kg) | 131 – 183 | 149 – 212 | 118 – 174 | 171 – 248 | 118 – 159 | 149 – 212 | 99 – 124 | 124 – 174 |
