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ASTM Grade HK Steel vs. EN 1.3975 Stainless Steel

Both ASTM grade HK steel and EN 1.3975 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 1.3975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
27
Fatigue Strength, MPa 150
230
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 500
660
Tensile Strength: Yield (Proof), MPa 270
320

Thermal Properties

Latent Heat of Fusion, J/g 310
340
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
910
Melting Completion (Liquidus), °C 1400
1360
Melting Onset (Solidus), °C 1350
1320
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 25
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 4.4
3.3
Embodied Energy, MJ/kg 63
47
Embodied Water, L/kg 200
150

Common Calculations

PREN (Pitting Resistance) 27
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
150
Resilience: Unit (Modulus of Resilience), kJ/m3 190
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
22
Thermal Shock Resistance, points 11
15

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.050
Chromium (Cr), % 24 to 28
16 to 18
Iron (Fe), % 44.8 to 57.8
58.2 to 65.4
Manganese (Mn), % 0 to 2.0
7.0 to 9.0
Molybdenum (Mo), % 0 to 0.5
0 to 1.0
Nickel (Ni), % 18 to 22
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 2.0
3.5 to 4.5
Sulfur (S), % 0 to 0.040
0 to 0.030