52100

UNS #G52986

52100 is a high-performance bearing steel. A deep-hardening alloy steel used in high-stress applications where good rolling contact fatigue strength is required at operating temperatures below 400°F (204°C). This grade is produced by the vacuum-arc remelting process and offers greatly improved cleanliness and internal soundness over conventionally air melted bearing quality SAE 52100 steel. This alloy can also be made available as a vacuum induction melted plus vacuum arc remelted (VIM-VAR) product.

Type Analysis

  • Carbon (Nominal) 1.05
  • Phosphorus (Maximum) 0.025
  • Silicon (Nominal) 0.3
  • Manganese (Nominal) 0.35
  • Sulfur (Maximum) 0.025
  • Chromium (Nominal) 1.4
  • Iron (Nominal) Balance

Applications

Aircraft bearings, high-stress parts

Applicable Specifications

  • AMS 6440
  • ASTM A295
  • AMS 6444

Billet

Rounds

Wire

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