AISI 6150 Round Bar (UNS G61500)
AISI 6150 Round Bar is a chromium–vanadium alloy steel known for its excellent toughness, high strength, and superior fatigue resistance. The addition of vanadium refines the grain structure, improving impact resistance and wear performance. This grade is widely used in applications that demand high shock resistance and long service life, especially under cyclic and dynamic loads.
Key Features
- Chromium–vanadium alloy steel with fine grain structure
- Excellent toughness and fatigue strength
- Very good wear and abrasion resistance
- Outstanding response to quenching and tempering
- Reliable performance under shock and dynamic loading
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | 51CrV4 |
| DIN | 1.8159 |
| JIS | SUP10 |
| IS | 50CrV4 |
Sizes
- Diameter: 12 mm to 500 mm
- Length: 3 m, 6 m, or cut-to-length
- Custom sizes available on request
AISI 6150 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.48 – 0.53 |
| Chromium (Cr) | 0.80 – 1.10 |
| Vanadium (V) | 0.15 – 0.25 |
| Manganese (Mn) | 0.70 – 0.90 |
| Silicon (Si) | 0.15 – 0.35 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
6150 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 950 – 1150 MPa |
| Yield Strength | 700 – 850 MPa |
| Elongation | 10 – 14% |
| Hardness | 28 – 35 HRC |
UNS G61500 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1425°C |
| Thermal Conductivity | 42.6 W/m·K |
| Modulus of Elasticity | 205 GPa |
Types of AISI 6150 Round Bar
- Hot Rolled Round Bar
- Forged Round Bar
- Peeled Round Bar
- Turned & Polished Round Bar
- Quenched & Tempered (Q&T) Round Bar
Applications
- Automotive and industrial springs
- Torsion bars and suspension components
- Gears, shafts, and axles
- Hand tools and forged parts
- Mining and heavy engineering components
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