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SAE-AISI M3 Class 1 Steel vs. ASTM Grade HK Steel

Both SAE-AISI M3 class 1 steel and ASTM grade HK steel are iron alloys. They have 57% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M3 class 1 steel and the bottom bar is ASTM grade HK steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
500

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1610
1400
Melting Onset (Solidus), °C 1570
1350
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 26
15
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 25
25
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 10
4.4
Embodied Energy, MJ/kg 150
63
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 33
27
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 72
18
Strength to Weight: Bending, points 22 to 44
18
Thermal Diffusivity, mm2/s 7.2
3.9
Thermal Shock Resistance, points 24 to 67
11

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.2 to 0.6
Chromium (Cr), % 3.8 to 4.5
24 to 28
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.9 to 82.9
44.8 to 57.8
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.8 to 6.5
0 to 0.5
Nickel (Ni), % 0 to 0.3
18 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.3 to 2.8
0