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ASTM Grade HI Steel vs. EN 1.0255 Steel

Both ASTM grade HI steel and EN 1.0255 steel are iron alloys. They have 55% of their average alloy composition in common. There are 30 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 HI steel and the bottom bar is EN 1.0255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
120
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
27
Fatigue Strength, MPa 150
180
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 550
430
Tensile Strength: Yield (Proof), MPa 270
250

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 23
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.1
1.5
Embodied Energy, MJ/kg 59
19
Embodied Water, L/kg 200
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
100
Resilience: Unit (Modulus of Resilience), kJ/m3 180
160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
15
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 3.9
11
Thermal Shock Resistance, points 12
14

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.2
Carbon (C), % 0.2 to 0.5
0 to 0.16
Chromium (Cr), % 26 to 30
0 to 0.3
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 46.9 to 59.8
94.1 to 99.98
Manganese (Mn), % 0 to 2.0
0 to 1.2
Molybdenum (Mo), % 0 to 0.5
0 to 0.080
Nickel (Ni), % 14 to 18
0 to 0.3
Niobium (Nb), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.015
Titanium (Ti), % 0
0 to 0.040
Vanadium (V), % 0
0 to 0.020