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ASTM Grade HK Steel vs. EN 1.4020 Stainless Steel

Both ASTM grade HK steel and EN 1.4020 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HK steel and the bottom bar is EN 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
13 to 34
Fatigue Strength, MPa 150
340 to 540
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 500
770 to 1130
Tensile Strength: Yield (Proof), MPa 270
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 310
280
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
890
Melting Completion (Liquidus), °C 1400
1390
Melting Onset (Solidus), °C 1350
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 25
11
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 4.4
2.5
Embodied Energy, MJ/kg 63
37
Embodied Water, L/kg 200
150

Common Calculations

PREN (Pitting Resistance) 27
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 190
460 to 2290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
28 to 41
Strength to Weight: Bending, points 18
25 to 32
Thermal Shock Resistance, points 11
16 to 23

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.15
Chromium (Cr), % 24 to 28
16.5 to 19
Iron (Fe), % 44.8 to 57.8
62.8 to 71.8
Manganese (Mn), % 0 to 2.0
11 to 14
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 18 to 22
0.5 to 2.5
Nitrogen (N), % 0
0.2 to 0.45
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030