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ASTM A369 Grade FP91 vs. EN 1.8201 Steel

Both ASTM A369 grade FP91 and EN 1.8201 steel are iron alloys. Both are furnished in the normalized and tempered condition. They have a moderately high 92% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP91 and the bottom bar is EN 1.8201 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
20
Fatigue Strength, MPa 320
310
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
74
Shear Strength, MPa 410
390
Tensile Strength: Ultimate (UTS), MPa 670
630
Tensile Strength: Yield (Proof), MPa 460
450

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 600
450
Melting Completion (Liquidus), °C 1460
1500
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 10
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
7.0
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.6
2.5
Embodied Energy, MJ/kg 37
36
Embodied Water, L/kg 88
59

Common Calculations

PREN (Pitting Resistance) 13
5.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 560
530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 6.9
11
Thermal Shock Resistance, points 18
18

Alloy Composition

Aluminum (Al), % 0 to 0.020
0 to 0.030
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.080 to 0.12
0.040 to 0.1
Chromium (Cr), % 8.0 to 9.5
1.9 to 2.6
Iron (Fe), % 87.3 to 90.3
93.6 to 96.2
Manganese (Mn), % 0.3 to 0.6
0.1 to 0.6
Molybdenum (Mo), % 0.85 to 1.1
0.050 to 0.3
Nickel (Ni), % 0 to 0.4
0
Niobium (Nb), % 0.060 to 0.1
0.020 to 0.080
Nitrogen (N), % 0.030 to 0.070
0 to 0.015
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0.2 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.010
Titanium (Ti), % 0 to 0.010
0.0050 to 0.060
Tungsten (W), % 0
1.5 to 1.8
Vanadium (V), % 0.18 to 0.25
0.2 to 0.3
Zirconium (Zr), % 0 to 0.010
0