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ASTM A369 Grade FPA vs. EN 1.4958 Stainless Steel

Both ASTM A369 grade FPA and EN 1.4958 stainless steel are iron alloys. They have 47% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4958 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
40
Fatigue Strength, MPa 180
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 240
430
Tensile Strength: Ultimate (UTS), MPa 380
630
Tensile Strength: Yield (Proof), MPa 240
190

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1090
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
12
Thermal Expansion, µm/m-K 12
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.4
5.3
Embodied Energy, MJ/kg 18
75
Embodied Water, L/kg 46
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
190
Resilience: Unit (Modulus of Resilience), kJ/m3 150
95
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13
22
Strength to Weight: Bending, points 15
20
Thermal Diffusivity, mm2/s 14
3.2
Thermal Shock Resistance, points 12
15

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.5
Carbon (C), % 0 to 0.25
0.030 to 0.080
Chromium (Cr), % 0
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 98.3 to 99.63
41.1 to 50.6
Manganese (Mn), % 0.27 to 0.93
0 to 1.5
Nickel (Ni), % 0
30 to 32.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0.1 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.035
0 to 0.010
Titanium (Ti), % 0
0.2 to 0.5