| +A | Soft annealed |
| +AC | Annealed to achieve spheroidization of the carbides |
| +AR | As rolled |
| +AT | Solution annealed |
| +C | Cold drawn / hard |
| +CR | Cold rolled |
| +FP | Treated to ferrite-pearlite structure and hardness range |
| +I | Isothermal annealing |
| +LC | Cold drawn / soft |
| +M | Thermo mechanical rolling |
| +N | Normalized |
| +NT | Normalized and tempered |
| +P | Precipitation hardened |
| +PE | Peeled |
| +QA | Air quenched and tempered |
| +QL | Liquid quenched and tempered |
| +QT | Quenched and tempered |
| +S | Treated to improve shearability |
| +SH | As rolled and turned |
| +SR | Cold drawn and stress relieved |
| +T | Tempered |
| +TH | Treated to hardness range |
| +WW | Warm worked |
| +U | Untreated |