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SAE-AISI D3 Steel vs. ASTM A369 Grade FP91

Both SAE-AISI D3 steel and ASTM A369 grade FP91 are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D3 steel and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.8 to 15
19
Fatigue Strength, MPa 310 to 940
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 74
75
Shear Strength, MPa 470 to 1220
410
Tensile Strength: Ultimate (UTS), MPa 770 to 2050
670
Tensile Strength: Yield (Proof), MPa 480 to 1550
460

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 31
26
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
10

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
7.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.6
Embodied Energy, MJ/kg 48
37
Embodied Water, L/kg 100
88

Common Calculations

PREN (Pitting Resistance) 13
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 97 to 180
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 74
24
Strength to Weight: Bending, points 24 to 47
22
Thermal Diffusivity, mm2/s 8.3
6.9
Thermal Shock Resistance, points 23 to 63
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 2.0 to 2.4
0.080 to 0.12
Chromium (Cr), % 11 to 13.5
8.0 to 9.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 80.3 to 87
87.3 to 90.3
Manganese (Mn), % 0 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 0 to 0.3
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.6
0.2 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0 to 1.0
0
Vanadium (V), % 0 to 1.0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010