
Alloy Steel Grade 17CrNiMo6-7 (commonly associated with EN 10084 / DIN 1.6587 / 18CrNiMo7-6) is a premium European chromium-nickel-molybdenum case-hardening steel engineered for high core tensile strength, extreme wear resistance, and high fatigue resistance in heavy-duty gear systems, shafts, and drive components.
Chemical Composition
| Element Name | Minimum Range | Maximum Range |
| Chromium | 1.50 percent | 1.80 percent |
| Nickel | 1.40 percent | 1.70 percent |
| Manganese | 0.50 percent | 0.90 percent |
| Silicon | None | 0.40 percent |
| Molybdenum | 0.25 percent | 0.35 percent |
| Carbon | 0.14 percent | 0.19 percent |
| Phosphorus | None | 0.025 percent |
| Sulfur | None | 0.035 percent |
| Iron | Balance | Balance |
Material Specifications and Scrap Characteristics
Equivalent Standard Grades: Werkstoff Number 1.6587, EN 10084 Grade 18CrNiMo7-6, DIN 17CrNiMo6, DIN 17CrNiMo7, AFNOR 18NCD6, BS 820A16, GB 17Cr2Ni2Mo.
Density: 7.85 grams per cubic centimeter.
Magnetic Response: Fully magnetic.
Typical Scrap Forms: Solid round bar crop-ends, flat bar cutoffs, heavy plate trimmings, forged blocks, gear blank rings, axle drop-offs, and heavy shaft scrap.
Scrap Quality Requirements: Must consist of clean, solid scrap (bars, plates, blocks, forgings) strictly segregated from standard carbon steel and non-nickel alloy grades; completely free of heavy oxidation, scale, oil, grease, slag, flame-cut dross, paint, and non-ferrous attachments.
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