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ASTM Grade HK Steel vs. EN 1.4958 Stainless Steel

Both ASTM grade HK steel and EN 1.4958 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 1.4958 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
40
Fatigue Strength, MPa 150
170
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 500
630
Tensile Strength: Yield (Proof), MPa 270
190

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 440
500
Maximum Temperature: Mechanical, °C 1100
1090
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1350
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 25
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 4.4
5.3
Embodied Energy, MJ/kg 63
75
Embodied Water, L/kg 200
200

Common Calculations

PREN (Pitting Resistance) 27
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
190
Resilience: Unit (Modulus of Resilience), kJ/m3 190
95
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 18
20
Thermal Diffusivity, mm2/s 3.9
3.2
Thermal Shock Resistance, points 11
15

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.5
Carbon (C), % 0.2 to 0.6
0.030 to 0.080
Chromium (Cr), % 24 to 28
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 44.8 to 57.8
41.1 to 50.6
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 18 to 22
30 to 32.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 2.0
0 to 0.7
Sulfur (S), % 0 to 0.040
0 to 0.010
Titanium (Ti), % 0
0.2 to 0.5