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4340 /40NiCrMo8-4/ EN24/ 1.6562 / SNCM439 alloy steel round bar
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Meorient Import & Export Co.LTD
China - Hangzhou
Trading Company
Trade Capacity
Export Percentage
Nearest Port
Hangzhou,Shanghai
Accepted Delivery Terms
Employees
5-10人
Accepted Payment Currency
USD,CNY
Average Lead Time
45 Day(s)
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Product Specifications
--Product Description
Product Description
General Information:
40CrMnNiMo8-4 is another alloy which displays superior mechanical properties. This material is available in the Annealed or Quenched and Tempered conditions. 4340 is used many industries including oil and gas exploration, gear manufactring etc.
Comparable Standards:
| AISI/SAE | DIN | W.Nr. | AFNOR | JIS | BS | SIAU | GB,YB |
4340 | 40CrMnNiMo8-4 | 1.6562 | - | SNCM439 | - | NCM4 | 40CrNiMoA |
Chemical Analysis (%):
| C | Mn | Si | Cr | Ni | Mo | P | S |
| 0.37-0.44 | 0.50-0.80 | 0.15-0.40 | 0.60-0.90 | 1.60-1.90 | 0.20-0.30 | ≤0.035 | ≤0.040 |
Mechanical properties
| Tensile str. (N/mm2) | Yield point (N/mm2) | Elongation (%) | Contraction (%) | Impack work (J/cm2) | Hardness (HB) |
| 980 | 835 | 12 | 205 | 55 | 269 |
| Heat Treatment(°C) | Physical Properties | ||||
| Quenched | Tempered | Thermal Conductivity (20°C)Wm-1. ok-1 | Typical Thermal expansion coefficient (20-200°C) | Specific Heat (20°C) | Density (20°C) |
| 850 | 600 | 12 | 12.7 | ||
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