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AISI 305 Stainless Steel vs. ASTM A369 Grade FPA

Both AISI 305 stainless steel and ASTM A369 grade FPA are iron alloys. They have 70% of their average alloy composition in common. There are 31 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 AISI 305 stainless steel and the bottom bar is ASTM A369 grade FPA.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
110
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34 to 45
27
Fatigue Strength, MPa 210 to 280
180
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 400 to 470
240
Tensile Strength: Ultimate (UTS), MPa 580 to 710
380
Tensile Strength: Yield (Proof), MPa 230 to 350
240

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 540
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
52
Thermal Expansion, µm/m-K 17
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 16
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
1.4
Embodied Energy, MJ/kg 45
18
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 210
89
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 320
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20 to 25
13
Strength to Weight: Bending, points 20 to 23
15
Thermal Diffusivity, mm2/s 4.2
14
Thermal Shock Resistance, points 13 to 15
12

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.25
Chromium (Cr), % 17 to 19
0
Iron (Fe), % 65.1 to 72.5
98.3 to 99.63
Manganese (Mn), % 0 to 2.0
0.27 to 0.93
Nickel (Ni), % 10.5 to 13
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.75
0.1 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.035