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ASTM Grade HI Steel vs. EN 1.4578 Stainless Steel

Both ASTM grade HI steel and EN 1.4578 stainless steel are iron alloys. They have 83% of their average alloy composition in common. There are 32 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 HI steel and the bottom bar is EN 1.4578 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
51
Fatigue Strength, MPa 150
200
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 550
550
Tensile Strength: Yield (Proof), MPa 270
200

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
930
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 23
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.1
3.7
Embodied Energy, MJ/kg 59
51
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 29
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
220
Resilience: Unit (Modulus of Resilience), kJ/m3 180
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
19
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 3.9
3.9
Thermal Shock Resistance, points 12
12

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.040
Chromium (Cr), % 26 to 30
16.5 to 17.5
Copper (Cu), % 0
3.0 to 3.5
Iron (Fe), % 46.9 to 59.8
62.3 to 68.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 2.5
Nickel (Ni), % 14 to 18
10 to 11
Nitrogen (N), % 0
0 to 0.1
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 0.015