G40.21 Chemical Requirements
| Grade | Carbonmax | Manganese | Phosphorous | Sulfur max | Silicon | Chromium | Nickel | Copper |
|---|---|---|---|---|---|---|---|---|
| 38W | 0.20 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | - | - | - |
| 44W | 0.22 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | - | - | - |
| 50W | 0.23 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | - | - | - |
| 55W | 0.23 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | - | - | - |
| 60W | 0.23 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | - | - | - |
| 70W | 0.26 | 0.50-1.50 | 0.04 max | 0.05 | 0.40 max | - | - | - |
| 80W | 0.15 | 1.75 max | 0.04 max | 0.05 | 0.40 max | - | - | - |
| 38WT | 0.20 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| 44WT | 0.22 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| 50WT | 0.22 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| 60WT | 0.22 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| 70WT | 0.26 | 0.80-1.50 | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| 80WT | 0.15 | 1.75 max | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| 50R | 0.16 | 0.75 max | 0.05-0.15 | 0.04 | 0.75 max | 0.30-1.25 | 0.90 max | 0.20-0.60 |
| 50A | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
| 60A | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
| 70A | 0.20 | 1.00-1.60 | 0.025 max | 0.035 | 0.15-0.50 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
| 80A | 0.15 | 1.75 max | 0.025 max | 0.035 | 0.15-0.50 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
| 50AT | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
| 60AT | 0.20 | 0.75-1.35 | 0.03 max | 0.04 | 0.15-0.50 | 0.70 max | 0.90 max | 0.20-0.60 |
| 70AT | 0.20 | 1.00-1.60 | 0.025 max | 0.035 | 0.15-0.50 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
| 80AT | 0.15 | 1.75 max | 0.025 max | 0.035 | 0.15-0.40 | 0.70 max | 0.25-0.50 | 0.20-0.60 |
| 100Q | 0.20 | 1.50 max | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| 100QT | 0.20 | 1.50 max | 0.03 max | 0.04 | 0.15-0.40 | - | - | - |
| In addition, grades 100Q and 100QT shall have a Boron composition of 0.0005-0.005% The above table has been abridged for clarity and relevance. The complete table can be found in the CSA standard at shop.csa.ca | ||||||||