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ASTM A369 Grade FP12 vs. S45500 Stainless Steel

Both ASTM A369 grade FP12 and S45500 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FP12 and the bottom bar is S45500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
280 to 500
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
3.4 to 11
Fatigue Strength, MPa 170
570 to 890
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 300
790 to 1090
Tensile Strength: Ultimate (UTS), MPa 470
1370 to 1850
Tensile Strength: Yield (Proof), MPa 250
1240 to 1700

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 430
760
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
17
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.6
3.8
Embodied Energy, MJ/kg 21
57
Embodied Water, L/kg 52
120

Common Calculations

PREN (Pitting Resistance) 2.8
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
45 to 190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
48 to 65
Strength to Weight: Bending, points 17
35 to 42
Thermal Shock Resistance, points 14
48 to 64

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.050
Chromium (Cr), % 0.8 to 1.3
11 to 12.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 96.8 to 98.4
71.5 to 79.2
Manganese (Mn), % 0.3 to 0.61
0 to 0.5
Molybdenum (Mo), % 0.44 to 0.65
0 to 0.5
Nickel (Ni), % 0
7.5 to 9.5
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.030
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0
0.8 to 1.4