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S32760 Stainless Steel vs. ASTM A369 Grade FP21

Both S32760 stainless steel and ASTM A369 grade FP21 are iron alloys. Both are furnished in the annealed condition. They have 66% of their average alloy composition in common. There are 32 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 S32760 stainless steel and the bottom bar is ASTM A369 grade FP21.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
20
Fatigue Strength, MPa 450
160
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
74
Shear Strength, MPa 550
300
Tensile Strength: Ultimate (UTS), MPa 850
470
Tensile Strength: Yield (Proof), MPa 620
240

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Mechanical, °C 1100
470
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 22
4.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.1
1.8
Embodied Energy, MJ/kg 57
23
Embodied Water, L/kg 180
61

Common Calculations

PREN (Pitting Resistance) 42
6.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
80
Resilience: Unit (Modulus of Resilience), kJ/m3 930
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
17
Strength to Weight: Bending, points 25
17
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 23
14

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.15
Chromium (Cr), % 24 to 26
2.7 to 3.4
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 57.6 to 65.8
94.3 to 96.2
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 3.0 to 4.0
0.8 to 1.1
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.025
Tungsten (W), % 0.5 to 1.0
0