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EN 1.3553 Steel vs. ASTM A387 Grade 91 Class 2

Both EN 1.3553 steel and ASTM A387 grade 91 class 2 are iron alloys. They have 88% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.3553 steel and the bottom bar is ASTM A387 grade 91 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 720
670

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Maximum Temperature: Mechanical, °C 540
600
Melting Completion (Liquidus), °C 1620
1460
Melting Onset (Solidus), °C 1570
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 24
26
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 11
10

Otherwise Unclassified Properties

Base Metal Price, % relative 24
7.0
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.5
2.6
Embodied Energy, MJ/kg 130
37
Embodied Water, L/kg 96
88

Common Calculations

PREN (Pitting Resistance) 31
13
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 6.4
6.9
Thermal Shock Resistance, points 21
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0.78 to 0.86
0.080 to 0.12
Chromium (Cr), % 3.9 to 4.3
8.0 to 9.5
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 80.7 to 83.7
87.3 to 90.3
Manganese (Mn), % 0 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 4.7 to 5.2
0.85 to 1.1
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0 to 0.4
0.2 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 6.0 to 6.7
0
Vanadium (V), % 1.7 to 2.0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010