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ASTM Grade HT Steel vs. EN 1.8901 Steel

Both ASTM grade HT steel and EN 1.8901 steel are iron alloys. They have 47% 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 HT steel and the bottom bar is EN 1.8901 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.6
19
Fatigue Strength, MPa 130
340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 500
630
Tensile Strength: Yield (Proof), MPa 270
490

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1010
410
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
44
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 31
2.6
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.4
1.8
Embodied Energy, MJ/kg 76
24
Embodied Water, L/kg 190
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
110
Resilience: Unit (Modulus of Resilience), kJ/m3 180
640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
22
Strength to Weight: Bending, points 18
21
Thermal Diffusivity, mm2/s 3.2
12
Thermal Shock Resistance, points 12
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0.35 to 0.75
0 to 0.22
Chromium (Cr), % 15 to 19
0 to 0.35
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 38.2 to 51.7
95 to 99.05
Manganese (Mn), % 0 to 2.0
1.0 to 1.8
Molybdenum (Mo), % 0 to 0.5
0 to 0.13
Nickel (Ni), % 33 to 37
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0
0 to 0.027
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.5
0 to 0.65
Sulfur (S), % 0 to 0.040
0 to 0.030
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.22