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ACI-ASTM CA6NM Steel vs. ASTM A369 Grade FP91

Both ACI-ASTM CA6NM steel and ASTM A369 grade FP91 are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 31 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 ACI-ASTM CA6NM steel and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
19
Fatigue Strength, MPa 380
320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Tensile Strength: Ultimate (UTS), MPa 850
670
Tensile Strength: Yield (Proof), MPa 620
460

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Mechanical, °C 770
600
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
26
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
10

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
2.6
Embodied Energy, MJ/kg 34
37
Embodied Water, L/kg 110
88

Common Calculations

PREN (Pitting Resistance) 15
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
560
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
24
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 6.7
6.9
Thermal Shock Resistance, points 31
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Carbon (C), % 0 to 0.060
0.080 to 0.12
Chromium (Cr), % 11.5 to 14
8.0 to 9.5
Iron (Fe), % 78.4 to 84.6
87.3 to 90.3
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0.4 to 1.0
0.85 to 1.1
Nickel (Ni), % 3.5 to 4.5
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0.2 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zirconium (Zr), % 0
0 to 0.010