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Steel circle delivery forms 1.5531 / 30MnB5 Steel circles Steel grades Dimensions supplied (mm) Steel circle 1.5531 / 30MnB5 10 – 400 Steel Circle 1.5531 / 30MnB5 Overview Steel circle 1.5531 / 30MnB5 is a boron-alloyed low-alloy steel known for its high strength, wear resistance, and excellent mechanical properties after heat treatment. It is widely […]
Steel circle delivery forms 1.5531 / 30MnB5
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Steel circles |
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| Steel grades | Dimensions supplied (mm) |
| Steel circle 1.5531 / 30MnB5 | 10 – 400 |
Overview
Steel circle 1.5531 / 30MnB5 is a boron-alloyed low-alloy steel known for its high strength, wear resistance, and excellent mechanical properties after heat treatment. It is widely used in agricultural machinery, mechanical engineering, and other industries requiring enhanced durability.
Chemical Composition (%):
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.27 – 0.33 |
| Silicon (Si) | 0.20 – 0.40 |
| Manganese (Mn) | 1.10 – 1.40 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | 0.15 – 0.30 |
| Boron (B) | 0.0005 – 0.005 |
Mechanical Properties:
| Parameter | Value |
|---|---|
| Hardness (HB) | 170–230 |
| Yield Strength (MPa) | ≥ 500 |
| Tensile Strength (MPa) | 900–1100 |
| Elongation (%) | ≥ 10 |
| Impact Toughness (J) | ≥ 35 |
Applications
Advantages
✅ High wear resistance and strength after heat treatment
✅ Excellent mechanical properties under impact loads
✅ Optimal hardenability and processing stability
✅ Increased durability in demanding operating conditions
Steel 1.5531 / 30MnB5 is a reliable material for components operating under high loads and intensive wear conditions.
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