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ASTM A387 Grade 91 Class 2 vs. EN 1.0454 Cast Steel

Both ASTM A387 grade 91 class 2 and EN 1.0454 cast steel are iron alloys. Both are furnished in the normalized and tempered condition. They have 89% of their average alloy composition in common. There are 29 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 A387 grade 91 class 2 and the bottom bar is EN 1.0454 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
25
Fatigue Strength, MPa 330
220
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 670
550
Tensile Strength: Yield (Proof), MPa 470
300

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
400
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
53
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
1.7
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
1.4
Embodied Energy, MJ/kg 37
18
Embodied Water, L/kg 88
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 580
240
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 6.9
14
Thermal Shock Resistance, points 19
17

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0
Iron (Fe), % 87.3 to 90.3
99.935 to 100
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0.2 to 0.5
0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0