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S81921 Stainless Steel vs. ASTM A182 Grade F2

Both S81921 stainless steel and ASTM A182 grade F2 are iron alloys. Both are furnished in the annealed condition. They have 73% 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 S81921 stainless steel and the bottom bar is ASTM A182 grade F2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
23
Fatigue Strength, MPa 370
220
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 460
350
Tensile Strength: Ultimate (UTS), MPa 710
550
Tensile Strength: Yield (Proof), MPa 500
310

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 990
420
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.7
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
1.6
Embodied Energy, MJ/kg 41
21
Embodied Water, L/kg 150
50

Common Calculations

PREN (Pitting Resistance) 28
2.5
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
110
Resilience: Unit (Modulus of Resilience), kJ/m3 630
250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
20
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 20
16

Alloy Composition

Carbon (C), % 0 to 0.030
0.050 to 0.21
Chromium (Cr), % 19 to 22
0.5 to 0.81
Iron (Fe), % 66.7 to 75.9
96.9 to 98.6
Manganese (Mn), % 2.0 to 4.0
0.3 to 0.8
Molybdenum (Mo), % 1.0 to 2.0
0.44 to 0.65
Nickel (Ni), % 2.0 to 4.0
0
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0.1 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.040