| CARBON STEEL GRADE | DESCRIPTION | APPLICATION |
| 1018 | mild (low carbon) steel, strong and ductile, has good weldability properties | crimping, bending, swaging, worms, pins, gears, dowels, tool holders, machine parts, pinions, ratchets, etc. |
| 1020 | suitable for surface hardening, can be case machined, hardened, and welded | hydraulic shafts, motor shafts, pump shafts, machinery parts |
| 1030 | high carbon steel, has moderate hardness and strength, machinable, ductile | machinery parts, used in the tempered and quenched condition for strength |
| 1035 | medium-carbon engineering steel, suitable for induction hardening and flame | used for forged parts, links, gears, couplings, forged shafts and axles |
| 1040 | has good strength, wear resistance, and toughness, machinable | forged couplings and crankshafts |
| 1045 | medium carbon steel, can be forged satisfactorily, most common shafting steel | induction hardening applications, medium strength parts, shafts for pneumatic and hydraulic cylinders |
| 1050 | plain carbon steel, readily welded and machined | forged shafts and gears |
| 1060 | standard grade carbon steel | used for forged applications |
| 1065 | high-carbon steel, has high tensile strength, heat treatable | blades and cutlery |
| 1144 | stress-proof-equivalent steel, a higher-strength alloy than A36 and 1018, has improved ductility | used for parts requiring mechanical properties obtained by heat treating |
| 11L14 | free machining steel, has enhanced machinability, stronger than 1018 | used for forged applications |
| 12L14 | free machining steel, has enhanced machinability, stronger than 1018 | screw machines, couplings, inserts, bushings, and hydraulic hose fittings |
