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ASTM A369 Grade FP12 vs. S45503 Stainless Steel

Both ASTM A369 grade FP12 and S45503 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 S45503 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
410 to 500
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
4.6 to 6.8
Fatigue Strength, MPa 170
710 to 800
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 300
940 to 1070
Tensile Strength: Ultimate (UTS), MPa 470
1610 to 1850
Tensile Strength: Yield (Proof), MPa 250
1430 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
15
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.6
3.4
Embodied Energy, MJ/kg 21
48
Embodied Water, L/kg 52
120

Common Calculations

PREN (Pitting Resistance) 2.8
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
82 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
57 to 65
Strength to Weight: Bending, points 17
39 to 43
Thermal Shock Resistance, points 14
56 to 64

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.010
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
72.4 to 78.9
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
0.1 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0 to 0.5
0 to 0.2
Sulfur (S), % 0 to 0.025
0 to 0.010
Titanium (Ti), % 0
1.0 to 1.4