38B3 is a boron-alloyed steel known for its high hardenability and strength. This steel grade is frequently used to manufacture small- to medium-sized car components, like connecting rods, which benefit from the steel’s enhanced wear resistance and durability under dynamic loads. The addition of boron also significantly improves its mechanical properties without the need for more extensive alloying elements.
| Chemical Properties | |
|---|---|
| Carbon | 0.15 – 0.20 |
| Manganese | 0.60 – 0.90 |
| Silicon | 0.10 – 0.40 |
| Boron | 0.0008 – 0.005 |
| Phosporus | 0.035 (max) |
| Sulfur | 0.035 (max) |
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