Description
EN47 Grade Introduction:
EN47 Spring Steel is supplied in rolled condition and is suitable for oil hardening and tempering. It is known for combining spring characteristics with good wear and abrasion resistance when used in the oil-hardened and tempered condition. EN47 offers excellent toughness and shock resistance, making it ideal for parts exposed to stress, shock, and vibration. This alloy spring steel is commonly referred to as 51CrV4, 50CrV4, DIN 1.8159, or AISI 6150 in various standards across different countries.
EN47 is predominantly used for applications in tractors, heavy vehicles, larger plate springs, industrial production loads, and helical springs. Additionally, it is widely used in general engineering applications, especially where high shock resistance and toughness are required.
EN47 Grade Application:
EN47 spring steel is extensively used in the automotive industry and general engineering applications. It is suitable for components requiring high tensile strength and toughness. Common applications include:
- Crankshafts
- Steering knuckles
- Gears
- Spindles
- Pumps
EN47 Equivalent Grades:
| Country/Standard | Equivalent Grades |
|---|---|
| BS970 | 735A50, 735A51 |
| AISI | 6150 |
| DIN | 1.8159 |
| Other Names | 50CrV4, 50CV4, ASTM A829 |
Additional Grades Supplied:
MS, EN1A, EN3B, EN8, EN9, EN24, EN31, EN36C, EN41B, IS2062, 42CrMo4, D2, D3, H11, H13, and many others.
EN47 Chemical Composition:
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.45-0.55 |
| Manganese (Mn) | 0.50-0.80 |
| Silicon (Si) | 0.50 |
| Phosphorus (P) | 0.06 (max) |
| Chromium (Cr) | 0.80-1.20 |
| Sulfur (S) | 0.06 (max) |
| Vanadium (V) | 0.15 |
| Nickel (Ni) | – |
EN47 Mechanical Properties:
- Hardening: 840-870°C
- Quenching: Oil
- Tempering: 150-200°C
EN47 Hardness:
- Brinell/Rockwell Hardness: 150-200
EN47 Heat Treatment:
The heat treatment process for EN47 involves heating the material to certain temperatures depending on factors like component shape and size. The process includes heating, cooling, and soaking, which vary based on the furnace type, quenching medium, and workpiece transfer facilities.
EN47 Hardening:
To harden EN47, heat slowly to 650-700°C and thoroughly soak the component. Continue heating to the final hardening temperature of 830-860°C. Quenching should be done in oil.
EN47 Tempering:
After quenching, the component should be tempered immediately while still warm. Reheat to the desired tempering temperature and soak for one hour per 25 mm of thickness (minimum 2 hours). Typical tempering temperatures for EN47 are between 400-600°C.
EN47 Physical Properties:
| Property | Value | Unit |
|---|---|---|
| Density (g/cm³) | 8.08 | g/cm³ |
| Density (lb/in³) | 0.292 | lb/in³ |
| Melting Point (°C) | 1425 | °C |
| Melting Point (°F) | 2600 | °F |
EN47 Forging Properties:
To forge EN47 spring steel, preheat the steel carefully, then raise the temperature to 1050°C. Avoid forging below 840°C. Cool slowly after forging, preferably in a furnace.
EN47 Annealing:
For annealing, heat slowly to 820-840°C, ensuring a thorough soak. Cool slowly within the furnace.
EN47 Density:
| Property | Value | Unit |
|---|---|---|
| Density | 7700 | kg/m³ |
EN47 Machinability:
EN47 offers moderate machinability and can be machined using standard techniques.
EN47 Welding:
For welding EN47, consult with a welding consumables supplier to ensure proper techniques and materials for successful welding.
Supply Cities:
Mumbai Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai, Chittoor, Coimbatore, Dindigul, Mysore, Nellore, Hyderabad, Kochi, Mangalore, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Tamil Nadu, Telangana, Visakhapatnam, Kochi, Kerala, Hubli-Dharwad, Karnataka
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