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ASTM Grade HK Steel vs. S41041 Stainless Steel

Both ASTM grade HK steel and S41041 stainless steel are iron alloys. They have 65% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HK steel and the bottom bar is S41041 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
17
Fatigue Strength, MPa 150
350
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 500
910
Tensile Strength: Yield (Proof), MPa 270
580

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Corrosion, °C 440
430
Maximum Temperature: Mechanical, °C 1100
740
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
29
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
2.2
Embodied Energy, MJ/kg 63
31
Embodied Water, L/kg 200
100

Common Calculations

PREN (Pitting Resistance) 27
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
140
Resilience: Unit (Modulus of Resilience), kJ/m3 190
860
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 18
27
Thermal Diffusivity, mm2/s 3.9
7.8
Thermal Shock Resistance, points 11
33

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.2 to 0.6
0.13 to 0.18
Chromium (Cr), % 24 to 28
11.5 to 13
Iron (Fe), % 44.8 to 57.8
84.5 to 87.8
Manganese (Mn), % 0 to 2.0
0.4 to 0.6
Molybdenum (Mo), % 0 to 0.5
0 to 0.2
Nickel (Ni), % 18 to 22
0 to 0.5
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030