Table 2 Comparison of the physical properties between HSS and stainless steel

Density(g/cm³)

8.14

7.9

Melting point(℃)

1520

1400

Elastic modulus(GPa)

210

198

Heat resistance(℃)

500–600

300–400

Hardness

62–64 HRC

230 HV

thermal expansivity(℃)

11×10⁻⁶

17.3×10⁻⁶

Bending strength(GPa)

2.5–4

2.4

Compressive strength(GPa)

2.8–3.8

4

Thermal conductivity(W/(m·K))

19.0

16.2