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ASTM A369 Grade FPA vs. EN 1.3955 Stainless Steel

Both ASTM A369 grade FPA and EN 1.3955 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A369 grade FPA and the bottom bar is EN 1.3955 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
23
Fatigue Strength, MPa 180
150
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 380
520
Tensile Strength: Yield (Proof), MPa 240
220

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
930
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.2
Embodied Energy, MJ/kg 18
45
Embodied Water, L/kg 46
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
95
Resilience: Unit (Modulus of Resilience), kJ/m3 150
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13
18
Strength to Weight: Bending, points 15
18
Thermal Diffusivity, mm2/s 14
4.1
Thermal Shock Resistance, points 12
15

Alloy Composition

Carbon (C), % 0 to 0.25
0 to 0.15
Chromium (Cr), % 0
16.5 to 18.5
Iron (Fe), % 98.3 to 99.63
65.5 to 73.5
Manganese (Mn), % 0.27 to 0.93
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0
10 to 12
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.1 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.030