Stainless Steel 501

 

Stainless Steel 501

General Characteristics of Stainless 501

Stainless 501 resists corrosion at moderate temperatures while offering heat resistance and favorable mechanical characteristics in higher heat applications. Magnetic in all conditions, Stainless 501 is a stainless steel almost always annealed when used.

Chemical Composition of Stainless 501

  • Carbon 0.10 min
  • Silicon 1.00 max
  • Manganese 1.00 max
  • Chromium 4.00-6.00
  • Phosphorus 0.040 max
  • Molybdenum 0.40-0.65
  • Sulfur 0.030 max
  • Iron balance

Heat Treatment of Stainless 501

  • Full anneal by heating at 1525° to 1600°F (829° to 871°C) before gradual furnace cooling
  • Low anneal by heating at 1325° to 1375°F (718° to 746°C) before gradually cooling
  • Harden by heating at 1600° to 1700°F (871° to 927°C), then soaking, oil quenching and tempering at 400° to 1400°F (204° to 760°C)

Applications of Stainless 501

  • Refinery equipment, including oil pump and pipe parts

Machinability of Stainless 501

  • Favorable machinability when annealed
    • Grind high-speed steel single-point cutting tools to the following:
    • Side rake: 6-12°
    • Back rake: 5-10°
    • Side and end relief: 6-10°
    • End cutting-edge angle: 6-15°
    • Side cutting-edge angle: 10-20°
    • Nose radius: 10° cutting depth
  • Sulfurized or chlorinated cutting fluids with high-speed steel tools
  • Carbide tipped tools
    • Side rake: 4-12°
    • Back rake: 0-5°
    • Side and end relief: 4-10°
    • End cutting-edge angle: 8-14°
    • Side cutting-edge angle: 10-20°
    • Nose radius: 1/32”

Workability of Stainless 501

  • Appropriate for normal hot-forming procedures
  • Hot bend at 1750° to 1850°F (954° to 1010°C)
  • 2100° to 2200°F (1149° to 1204°C) for initial forging
  • Finish at 1700°F (927°C)

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