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SAE-AISI M33 Steel vs. ASTM Grade HK Steel

Both SAE-AISI M33 steel and ASTM grade HK steel are iron alloys. They have 56% 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 M33 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 78
79
Tensile Strength: Ultimate (UTS), MPa 810 to 2210
500

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1550
1400
Melting Onset (Solidus), °C 1500
1350
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 20
15
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 32
25
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.7
4.4
Embodied Energy, MJ/kg 110
63
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 38
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 75
18
Strength to Weight: Bending, points 24 to 46
18
Thermal Diffusivity, mm2/s 5.5
3.9
Thermal Shock Resistance, points 25 to 68
11

Alloy Composition

Carbon (C), % 0.85 to 0.92
0.2 to 0.6
Chromium (Cr), % 3.5 to 4.0
24 to 28
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 71.4 to 76.3
44.8 to 57.8
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 9.0 to 10
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), % 0.15 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 1.3 to 2.1
0
Vanadium (V), % 1.0 to 1.4
0