ASP® 2055 Powder Metallurgy High-Speed Steel

Material available in round and flat sections

ASP 2055 is a high alloyed PM-HSS grade for high demanding cutting and cold work applications in which high performance and good grindability are important.

Applications

Physical Properties

Temperature	20°C	400°C	600°C
Density g/cm3	8	7.9	7.9
Modulus of elasticity kN/mm²	240	214	192
Thermal expansion ratio per °C	-	11.8x10 -6	12.3x10 -6
Thermal conductivity W/m°C	24	28	27
Speciﬁc heat J/kg°C	420	510	600

4-Point Bend Strength

Tempering 2 x 1 hour at 560°C

Dimension of test piece Ø 4.7 mm

Rmb = Ultimate bend strength in kN/mm²

Reb = Bend yield strength in kN/mm²

Tot. work = Total work in Nm

Heat Treatment

Soft annealing in a protective atmosphere at 850-900°C for 3 hours. followed by slow cooling at 10°C/h down to 700°C. then air cooling.
Stress-relieving at 600°C to 700°C for approximately 2 hours, slow cooling down to 500°C.
Hardening in a protective atmosphere with pre-heating in 2 steps at 450-500°C and 850-900°C and austenitising at a temperature suitable for chosen working hardness.
Tempering at 560°C three times for at least l hour each time. Cooling to room temperature (25°C) between tempering.

Surface Treatment

The steel grade is. a good substrate material for PVD and CVD coating. If nitriding is requested, a small zone of 2-15 um is recommended. The steel grade can also be steam-tempered if so desired.

Guidelines For Hardening

Tempering temperature in °C

Hardness after hardening, quenching and tempering 3 x 1 hour

We supply a comprehensive range of special steel products.

Whether you need tool steels, conventional high-speed steels, or powder metallurgy grades, our friendly team is ready to help meet your requirements. We cut and supply steel products for our customers, across the UK and Ireland, and specialise in niche products as well as standard commercial grades.