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SAE-AISI 9310 Steel vs. ASTM A369 Grade FP21

Both SAE-AISI 9310 steel and ASTM A369 grade FP21 are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 9310 steel and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540 to 610
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 19
20
Fatigue Strength, MPa 300 to 390
160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Shear Strength, MPa 510 to 570
300
Tensile Strength: Ultimate (UTS), MPa 820 to 910
470
Tensile Strength: Yield (Proof), MPa 450 to 570
240

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 440
470
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.8
Embodied Energy, MJ/kg 24
23
Embodied Water, L/kg 57
61

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 150
80
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 860
150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29 to 32
17
Strength to Weight: Bending, points 25 to 27
17
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 24 to 27
14

Alloy Composition

Carbon (C), % 0.080 to 0.13
0.050 to 0.15
Chromium (Cr), % 1.0 to 1.4
2.7 to 3.4
Iron (Fe), % 93.8 to 95.2
94.3 to 96.2
Manganese (Mn), % 0.45 to 0.65
0.3 to 0.6
Molybdenum (Mo), % 0.080 to 0.15
0.8 to 1.1
Nickel (Ni), % 3.0 to 3.5
0
Phosphorus (P), % 0 to 0.015
0 to 0.025
Silicon (Si), % 0.2 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.012
0 to 0.025