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ASTM A369 Grade FP12 vs. S35140 Stainless Steel

Both ASTM A369 grade FP12 and S35140 stainless steel are iron alloys. They have 51% of their average alloy composition in common. There are 32 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 ASTM A369 grade FP12 and the bottom bar is S35140 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
34
Fatigue Strength, MPa 170
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 300
460
Tensile Strength: Ultimate (UTS), MPa 470
690
Tensile Strength: Yield (Proof), MPa 250
310

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1470
1420
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
31
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.6
5.5
Embodied Energy, MJ/kg 21
78
Embodied Water, L/kg 52
190

Common Calculations

PREN (Pitting Resistance) 2.8
28
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
190
Resilience: Unit (Modulus of Resilience), kJ/m3 160
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
22
Thermal Diffusivity, mm2/s 12
3.7
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.1
Chromium (Cr), % 0.8 to 1.3
20 to 22
Iron (Fe), % 96.8 to 98.4
44.1 to 52.7
Manganese (Mn), % 0.3 to 0.61
1.0 to 3.0
Molybdenum (Mo), % 0.44 to 0.65
1.0 to 2.0
Nickel (Ni), % 0
25 to 27
Niobium (Nb), % 0
0.25 to 0.75
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.025
0 to 0.030