Steel 1.2550 - KL

1.2550 - KL steel:
good toughness and cutting performance.

1.2550 – KL steel is an oil-hardenable steel with very good toughness and relatively good cutting performance. The hardenability capacity is moderate for large cross-sections.

Properties of steel type 1.2550 – KL
 
  • Toughness.
  • Good cutting performance.
  • Hardenability capacity is moderate for large cross-sections.
The most common applications for steel type 1.2550 – KL
 
  • Cutting and punching tools for sheet metal thickness of approx. 6-12 mm.
  • Cold punches.
  • Deburring tools.
  • Profile shear blades.
  • Splicers.
  • Woodworking tools.
  • Small stamping tools.
  • Ejectors and similar tools.
  • Cutting tools for soft, medium-temperature cutting material (gently preheat tools).

Physical properties 1.2550 - KL steel

Temperature in °C20-10020-20020-400
Thermal expansion in 10-6m/m x K11.813.514.3
Temperature in °C20
Thermal conductivity in W/m x K31.9
Temperature in °C20
Density in g/cm37.85
Temperature in °C20
E module in GPa210

Heat treatment

Soft annealingTemperature: 750 – 780 °C, 4 – 6 hrs
Cooling: slow furnace cooling
Hardness: max. 225 HB
HardeningTemperature: 870 – 900 °C
Cooling Interrupt oil cooling at approx. 150 °C
TemperingTemperature for hot work 550 – 600 °C
Hardness: see tempering curve

Graphs and datasheets of 1.2550 - KL

1.2550 KL steel

1.2550 KL steel

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