5160 Alloy Steel
5160 Alloy Steel – Chemical Composition, Properties & Applications
Premium Grade Spring Steel
Overview of 5160 Alloy Steel
5160 steel, also known as AISI 5160 or SAE 5160 spring steel, is a high-carbon chromium steel widely utilized in applications that require superior fatigue resistance and impact strength. Its balanced mix of hardness and flexibility makes it one of the most versatile steels for both industrial and engineering purposes.
Key Features
- High resistance to impact and shock loads
- Excellent strength under continuous and repeated stress
- Reliable wear resistance under heavy-duty usage
- Exceptional toughness and durability in multiple environments
Chemical Composition
The following table shows the chemical composition of 5160 steel:
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.56–0.64% |
| Chromium (Cr) | 0.70–0.90% |
| Manganese (Mn) | 0.75–1.00% |
| Silicon (Si) | 0.15–0.30% |
| Phosphorus (P) | ≤ 0.035% |
| Sulfur (S) | ≤ 0.035% |
| Al + Nb | 0.015 – 0.040% |
This balanced alloy composition ensures 5160 spring steel is both hard and flexible, making it suitable for heavy mechanical applications.
Mechanical Properties
The table below outlines the key mechanical properties of 5160 steel:
| Property | Value |
|---|---|
| Fatigue Resistance | Excellent |
| Impact Strength | High |
These properties give 5160 alloy steel consistent performance under demanding and repetitive workloads.
KJ Steel Rolling Mills produces 5160 steel flat bars that find usage in:
- Automotive leaf springs, coil springs, and suspension components
- Torsion bars, and high-stress applications
- Modern rolling equipment ensuring precise dimensions and consistency
- Strict quality standards for chemical composition and mechanical strength
- Wide range of sizes
- Affordable pricing with reliable supply capability
- Ability to fulfill bulk and custom orders worldwide
KJ Steel supplies 5160 alloy steel in the following forms:
- 5160 Flat Bars and Strips
- Sizes as per customer requirement
| Standard | Designation |
|---|---|
| JIS | SUP9 / SUP9A |
| DIN / EN | 51CrV4 (EN 10089 or EN 10083-3) |
| ISO | 51CrV4 / 50CrV4 |
Q1. What is 5160 alloy steel best known for?
It is widely recognized for its toughness, impact resistance, and fatigue strength, making it ideal for springs.
Q2. Is 5160 spring steel easy to heat treat?
Yes, it responds well to oil or water quenching and can achieve required hardness.
Q3. What industries use 5160 steel the most?
Major industries include automotive and agriculture.
Q4. How does 5160 compare to other spring steels?
Compared to lower carbon spring steels, 5160 offers a stronger balance of toughness and wear resistance, making it superior for high-performance applications.
Q5. In what forms can I order 5160 steel from KJ Steel Rolling Mills?
We supply flats and strips with customized size and chemical composition.
KJ Steel Rolling Mills is a trusted supplier of grade 5160 spring steel. Whether your requirement is for industrial machinery or automotive suspension parts, our team ensures precision-rolled steel with consistent quality. Contact us now to request a quote or discuss custom requirements for 5160 alloy steel.