Alloy Steel Round Bar
Alloy steels are derivatives of carbon steels where elements are added or deleted to yield certain properties. Typically these properties include machinability, wearability, and strength. An iron-based mixture is considered to be an alloy steel when manganese is greater than 0.165%, silicon over 0.5%, copper above 0.6%, or other minimum quantities of alloying elements such as chromium, nickel, molybdenum, or tungsten are present
Alloy steels are widely used in industries that require superior mechanical performance and durability under demanding conditions. By carefully controlling the combination of alloying elements, manufacturers can enhance corrosion resistance, toughness, fatigue strength, and heat resistance. These steels are commonly applied in automotive components, heavy machinery, construction equipment, pressure vessels, and high-temperature engineering applications where reliability and long service life are essential.
- Enhanced Strength
- Corrosion Resistance
- Heat Resistance
- Improved Toughness
- Better Machinability
- Fatigue Strength
CHEMICAL COMPOSITION
Precise Chemical Composition for Superior Performance
| Grade | C | Mn | Si | S (max) | P (max) | Cr | Ni | Mo | V |
|---|---|---|---|---|---|---|---|---|---|
| EN 1A | 0.07–0.15 | 0.80–1.20 | 0.10 max | 0.20–0.30 | 0.070 | – | – | – | – |
| CL II | 0.15–0.23 | – | 0.40 max | 0.040 | 0.045 | – | – | – | – |
| EN 8 | 0.35–0.45 | 0.60–1.00 | 0.10–0.35 | 0.050 | 0.050 | – | – | – | – |
| C45 | 0.42–0.48 | 0.60–1.00 | 0.10–0.35 | 0.050 | 0.050 | – | – | – | – |
| EN 9 | 0.50–0.60 | 0.50–0.80 | 0.05–0.35 | 0.040 | 0.040 | – | – | – | – |
| EN 19 | 0.35–0.45 | 0.50–0.80 | 0.10–0.35 | 0.040 | 0.040 | 0.90–1.40 | – | 0.20–0.40 | – |
| SAE 4340 / EN 24 | 0.35–0.45 | 0.45–0.70 | 0.10–0.35 | 0.040 | 0.040 | 0.90–1.40 | 1.30–1.80 | 0.20–0.35 | – |
| EN 31 | 0.90–1.20 | 0.30–0.75 | 0.10–0.35 | 0.040 | 0.040 | 1.00–1.60 | – | – | – |
| EN 36C | 0.12–0.18 | 0.30–0.60 | 0.10–0.35 | 0.040 | 0.040 | 0.60–1.10 | 3.00–3.75 | 0.10–0.25 | – |
| EN 353 | 0.20 max | 0.50–1.00 | 0.35 max | 0.040 | 0.040 | 0.75–1.25 | 1.00–1.50 | 0.08–0.15 | – |
| EN355 / 17CrNiMo6 | 0.20 max | 0.40–0.70 | 0.35 max | 0.030 | 0.030 | 1.40–1.70 | 1.80–2.20 | 0.15–0.25 | – |
| 16MnCr5 | 0.14–0.19 | 1.00–1.30 | 0.15–0.40 | 0.035 | 0.035 | 0.80–1.10 | – | – | – |
| 20MnCr5 | 0.17–0.22 | 1.10–1.40 | 0.10–0.35 | 0.035 | 0.035 | 1.00–1.30 | – | – | – |
| SAE 4140 | 0.38–0.43 | 0.75–1.00 | 0.20–0.35 | 0.035 | 0.035 | 0.80–1.10 | – | 0.15–0.25 | – |
| SAE 8620 | 0.18–0.23 | 0.70–0.90 | 0.20–0.35 | 0.040 | 0.040 | 0.40–0.60 | 0.40–0.70 | 0.15–0.25 | – |
| SAE 8640 | 0.37–0.44 | 0.70–1.05 | 0.15–0.30 | 0.040 | 0.040 | 0.35–0.65 | 0.35–0.75 | 0.15–0.25 | – |
| SAE 52100 | 0.95–1.10 | 0.25–0.40 | 0.20–0.35 | 0.025 | 0.025 | 1.30–1.60 | – | – | – |
| ASTM 105 | 0.20–0.25 | 0.90–1.00 | 0.15–0.35 | 0.040 | 0.040 | – | – | – | – |
| M2 (HSS) | 0.78–0.88 | 0.20–0.40 | 0.20–0.40 | 0.025 | 0.025 | 3.75–4.50 | – | 4.50–5.50 | 1.6–2.2 |
| D2 | 1.40–1.60 | 0.20–0.50 | 0.10–0.80 | 0.035 | 0.035 | 11–13 | 0.30 | 1.00 | 0.5–1.1 |
| D3 | 2.00–2.30 | 0.25–0.50 | 0.35 max | 0.035 | 0.035 | 11–12 | 0.30 | – | 0.10–0.30 |
| H11 | 0.30–0.40 | 0.25–0.50 | 0.80–1.20 | 0.035 | 0.035 | 4.70–5.25 | 0.30 | 1.20–1.60 | 0.30–0.60 |
| H13 | 0.30–0.40 | 0.20–0.50 | 0.80–1.20 | 0.035 | 0.035 | 4.50–5.50 | 0.30 | 1.20–1.70 | 0.80–1.20 |
| F11 | 0.10–0.15 | 0.30–0.80 | 0.50–1.00 | 0.035 | 0.035 | 1.00–1.50 | – | 0.44–0.65 | – |
| F22 | 0.15 max | 0.30–0.60 | 0.50 max | 0.035 | 0.035 | 2.00–2.50 | – | 0.87–1.13 | – |
