817m40/en24 is a low-alloy chromium-nickel-molybdenum steel with excellent high strength and toughness, which is widely used in the manufacture of large machine parts and engineering components.
817m40/en24 Chemical Composition: Carbon (C) 0.30-0.38% Silicon (Si) ≤0.40% Manganese (Mn) 0.50-0.80% Phosphorus (P) ≤0.035% Sulfur (S) ≤0.035% Chromium (Cr) 1.30-1.70% nickel (Ni) 1.30-1.70% molybdenum (Mo) 0.15-0.30%
817m40/en24 Physical properties: Density: 7.85g/cm³ Melting point: 1420-1460ºC Linear expansion coefficient: 11.2×10^-6/K
817m40/en24 Mechanical properties: Tensile strength: ≥980MPa Yield strength: ≥785MPa Elongation: ≥12% Hardness: ≤217HB
Applications: The 817m40/en24 is widely used in large industrial components such as engine crankshafts, mating parts, non-slip clutches, gears, bearings and hydraulic components in construction machinery, automobiles and heavy machinery equipment.
Development prospects: With the continuous development of industrial technology, the demand for high-strength and high-toughness materials is increasing. The 817m40/en24 has very high mechanical properties and good wear resistance, and will still be widely used in various large industrial equipment parts in the future.
Note: In the use of 817m40/en24 need to pay attention to prevent excessive heat treatment, to avoid cracks and deformation. In addition, high-precision machining needs to be annealed to improve its machining accuracy.
Advantages and disadvantages: Advantages: 817m40/en24 has high strength and toughness, good wear resistance, suitable for manufacturing a variety of large parts. Disadvantages: 817m40/en24 price is high, it is difficult to carry out large-scale production, while its high hardness requires the use of high-strength cutting fluid processing, in the processing process will produce large heat, the need to take effective cooling measures.
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