AISI 5130 Round Bar (UNS G51300)
AISI 5130 Round Bar is a chromium alloy steel with medium carbon content, offering a good balance of strength, toughness, and wear resistance. This grade responds well to heat treatment and is commonly used for engineering components requiring higher strength than plain carbon steels, along with improved hardenability due to chromium addition.
Key Features
- Chromium alloy steel with good hardenability
- High tensile strength and toughness after heat treatment
- Good wear and abrasion resistance
- Suitable for quenching and tempering
- Better fatigue resistance than carbon steel grades
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | 30Cr4 |
| DIN | 1.7033 |
| JIS | SCR430 |
| IS | 30Cr1 |
Sizes
- Diameter: 20 mm to 500 mm
- Length: 3 m, 6 m, or cut-to-length
- Custom sizes available on request
AISI 5130 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.28 – 0.33 |
| Manganese (Mn) | 0.70 – 0.90 |
| Chromium (Cr) | 0.70 – 0.90 |
| Silicon (Si) | 0.15 – 0.35 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
5130 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 750 – 900 MPa |
| Yield Strength | ~550 MPa |
| Elongation | 12 – 16% |
| Hardness | 22 – 28 HRC |
UNS G51300 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1420°C |
| Thermal Conductivity | 46.0 W/m·K |
| Modulus of Elasticity | 205 GPa |
Types of AISI 5130 Round Bar
- Hot Rolled Round Bar
- Forged Round Bar
- Peeled Round Bar
- Turned & Polished Round Bar
- Quenched & Tempered (Q&T) Round Bar
Applications
- Shafts and axles
- Gears and pinions
- Automotive and agricultural components
- Machine and engineering parts
- Wear-resistant mechanical components
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