- EN 47
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.45 – 0.55 |
| Silicon (Si) | 0.10 – 0.35 |
| Manganese (Mn) | 0.50 – 0.90 |
| Nickel (Ni) | ≤ 0.25 |
| Chromium (Cr) | 0.50 – 1.00 |
| Vanadium (V) | ≤ 0.05 |
| Sulphur (S) | ≤ 0.05 |
| Phosphorus (P) | ≤ 0.05 |
EN47 - Grade Introduction
EN47 is a high-carbon alloy spring steel supplied in the rolled condition. It is suitable for oil hardening and tempering processes. In the hardened and tempered state, EN47 combines excellent spring characteristics with good wear and abrasion resistance.
When hardened, EN47 offers high toughness and superior shock resistance, making it ideal for applications subject to dynamic stresses, impacts, and vibrations.
Key Features
- High resilience and fatigue strength
- Excellent toughness and shock resistance
- Good wear and abrasion resistance
- Suitable for oil hardening and tempering
Mode of Supply
Kuber Multi Metals is the largest stockiest and supplier of EN47 tool steel in flat, square and round bar. We provide steel in all sizes as your requirements. EN47 die steel is available in flat, square and round shape. Consult our team who will assist you for EN47 steel query.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 700 – 950 MPa |
| Yield Strength | ~ 500 – 650 MPa |
| Elongation | 12 – 18 % |
| Hardness (Annealed) | ~ 250 HB |
| Hardness (Hardened & Tempered) | 48 – 52 HRC |
| Impact Strength | High (excellent shock resistance) |
Heat Treatment & Processes
Annealing
- Heat to: 820 – 840 °C
- Process: Hold until uniform temperature is reached
- Cooling: Furnace cool slowly to ~600 °C, then air cool
- Result: ~250 HB hardness, good machinability
Hardening
Preheat slowly to: 650 – 700 °C
Heat to: 820 – 850 °C
Process: Hold until uniform temperature is reached
Quenching: Oil
Tempering
Reheat to: 400 – 600 °C (depending on required hardness/toughness balance)
Process: Hold for at least 1 hour per 25 mm thickness
Cooling: Air cool
Final Hardness: 48 – 52 HRC
Application
Automotive & Heavy Vehicles: Leaf springs, coil springs, helical springs, Agricultural Equipment: Tractor springs and suspension parts, Industrial Applications: Load-bearing springs, plate springs, and general engineering components requiring strength under stress and vibration
Conclusion
EN47 is a medium-carbon, chromium alloy spring steel with excellent toughness, shock resistance, and fatigue strength. It is best suited for springs in heavy-duty automotive and industrial applications, especially where high stress and vibration resistance are required.
Addition to other Grades
HCHCR-D2 Steel , HCHCR-D3 Steel , P20+Ni Steel , P20 Steel , P20 HH , Stavax ESR , DB6 Steel , H13 Steel, H11 Steel, H21 Steel, H10 Steel, H12 Steel, M2 Steel, M35 Steel, M42 Steel, T1 Steel, C 45, MS Steel, En 31, En 24 , En 353 , En 19 , En 8 , En 8D , En 9 , En 47 , 20 Mncrs , SAE8620 , DIN 2379 Steel, DIN 2080 Steel, DIN 2738 Steel, DIN 2311 Steel, DIN 2714 Steel, DIN 2344 Steel , DIN 2343 Steel, DIN 2581 Steel, DIN 2365 Steel, DIN 2606 Steel, DIN 3343 Steel, DIN 3243 Steel, DIN 3247 Steel, DIN 3355 Steel , AISI D2 Steel, AISI D3 Steel, AISI P20+Ni Steel, AISI P20 Steel, AISI L6 Steel, AISI H13 Steel, AISI H11 Steel, AISI H21 Steel, AISI H10 Steel, AISI H12 Steel, AISI M2 Steel , AISI M35 Steel, AISI M42 Steel , AISI T1 Steel
