SAE 1018 carbon steel is a widely used low-carbon, free-machining grade with 0.12 to 2% carbon content. As the carbon content increases, steel hardness and strength improve, but ductility decreases. SAE 1018 is favored for its versatility in forming, machining, welding, and fabrication. Although its mechanical properties aren’t exceptional, its ease of machinability and availability make it one of the most commonly used grades.
SAE 1018 Grade Application:
SAE 1018 carbon steel is frequently utilized in high-volume screw machine parts production. Its other applications include:
- Shafts
- Spindles
- Pins
- Rods
- Sprocket assemblies
SAE 1018 Equivalent Grades:
| Standard | Equivalent Grades |
|---|---|
| AISI / SAE | 1018 |
| BS 970 | 708A30, CDS110 |
| UNS | – |
| DIN | 25CrMo4, GS-25CrMo4 |
| UNI | 25CrMo4 (KB), 30CrMo4 |
| JIS | SCM 420, SCM 430, SCCrM1 |
| EN Name | – |
| EN # | 1.7218 |
Additional Grades Available:
Other grades include MS, EN1A, EN3B, EN8, EN9, EN24, EN31, and various alloy steels like 42CrMo4, H13, and SAE4140.
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