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ASTM A387 Grade 2 Steel vs. ASTM A369 Grade FP92

Both ASTM A387 grade 2 steel and ASTM A369 grade FP92 are iron alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is ASTM A387 grade 2 steel and the bottom bar is ASTM A369 grade FP92.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 170
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
19
Fatigue Strength, MPa 190 to 250
330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 300 to 350
440
Tensile Strength: Ultimate (UTS), MPa 470 to 550
710
Tensile Strength: Yield (Proof), MPa 260 to 350
490

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 420
590
Melting Completion (Liquidus), °C 1470
1490
Melting Onset (Solidus), °C 1420
1450
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
10

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
11
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.6
2.8
Embodied Energy, MJ/kg 20
40
Embodied Water, L/kg 50
89

Common Calculations

PREN (Pitting Resistance) 2.4
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
620
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 20
25
Strength to Weight: Bending, points 17 to 19
22
Thermal Diffusivity, mm2/s 12
6.9
Thermal Shock Resistance, points 14 to 16
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0.050 to 0.21
0.070 to 0.13
Chromium (Cr), % 0.5 to 0.8
8.5 to 9.5
Iron (Fe), % 97.1 to 98.3
85.8 to 89.1
Manganese (Mn), % 0.55 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0.45 to 0.6
0.3 to 0.6
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0.15 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.010
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zirconium (Zr), % 0
0 to 0.010