AISI 1045 steel round bar is a high carbon steel under American standards, classified as a quenching and tempering steel with high strength characteristics. This alloy steel is available in various forms including hot rolled round bars, square bars, cold-drawing bars, and forged bars.
AISI 1045 round bar is widely used for manufacturing moving parts requiring high strength, including:
This material is commonly used in quenching and tempering and normalizing delivery states, and after high-frequency quenching or shot peening for wear-resistant applications.
| Grade | C | Si | Mn | Cr | P | S | Ni | Cu |
|---|---|---|---|---|---|---|---|---|
| AISI 1045 | 0.42-0.5 | 0.17-0.37 | 0.5-0.8 | ≤0.25 | ≤0.035 | ≤0.035 | ≤0.3 | ≤0.25 |
| Grade | Delivery State | T.S. (N/mm²) Min | Y.S. (N/mm²) Min | A,% Min | Z,% Min | Hardness, HB max | Forging Ratio | Grain Size (level) | Nonmetal Ratio | |
|---|---|---|---|---|---|---|---|---|---|---|
| AISI 1045 | Hot rolled, forged, or heat treatment | 600 | 355 | 16 | 40 | 229 | 197 | ≥ 4:1 | ≥ 6 | ≤ 2.0 |
| Steel Series | Representative Steel Type |
|---|---|
| Carbon Steel series | AISI 1020, 1045, A36, S355JR, S355JO |
| Petroleum machinery series | AISI 4150, AISI 4140, AISI 4130, 30CrMo, 4145H |
| Tool mold series | 1.2714, 5CrMnMo, 5CrNiMoV, 1.2738, 1.2311, 1.2312 |
| Bearing series | 52100, GCr15, SUJ2 |
| Marine series | 4140, 42CrMo, SCM440, 709M40 |
| Car series | SAE8620, 20CrNiMo, SNCM220 |
| Heavy-duty transmission series | 40CrNiMo, SNCM439, SAE4340, EN24 |
| Mining machinery series | 655M13, 826M40, 25CrMo |
| Wind power gear series | 18CrNiMo7-6, 17CrNiMo6, 1.6582, 1.6587, SAE8620 |
| Wind power spindle series | 34CrNiMo6, 817M40 |
| Nitriding series | 20MnCr5, 38CrMoAl, 31CrMoV9 |
| Pressure vessel series | 15CrMo, 13CrMo4-4 |
| Metallurgical roll series | 21CrMoV511, W1.7225, EN19, 709M40 |