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SAE-AISI 1090 Steel vs. ASTM A182 Grade FR

Both SAE-AISI 1090 steel and ASTM A182 grade FR are iron alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI 1090 steel and the bottom bar is ASTM A182 grade FR.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 280
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
28
Fatigue Strength, MPa 320 to 380
270
Poisson's Ratio 0.29
0.29
Reduction in Area, % 28 to 45
43
Shear Modulus, GPa 72
72
Shear Strength, MPa 470 to 570
320
Tensile Strength: Ultimate (UTS), MPa 790 to 950
490
Tensile Strength: Yield (Proof), MPa 520 to 610
360

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 50
52
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
3.3
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.6
Embodied Energy, MJ/kg 19
21
Embodied Water, L/kg 46
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 91
120
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1000
340
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 34
17
Strength to Weight: Bending, points 24 to 27
17
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 25 to 31
14

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.2
Copper (Cu), % 0
0.75 to 1.3
Iron (Fe), % 98 to 98.6
95.2 to 97.3
Manganese (Mn), % 0.6 to 0.9
0.4 to 1.1
Nickel (Ni), % 0
1.6 to 2.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Sulfur (S), % 0 to 0.050
0 to 0.050