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S21800 Stainless Steel vs. ASTM A372 Grade F Steel

Both S21800 stainless steel and ASTM A372 grade F steel are iron alloys. They have 64% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S21800 stainless steel and the bottom bar is ASTM A372 grade F steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
200 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 40
20 to 22
Fatigue Strength, MPa 330
310 to 380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 510
410 to 570
Tensile Strength: Ultimate (UTS), MPa 740
650 to 910
Tensile Strength: Yield (Proof), MPa 390
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 900
420
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.4
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.5
Embodied Energy, MJ/kg 45
20
Embodied Water, L/kg 150
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 390
500 to 810
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
23 to 32
Strength to Weight: Bending, points 24
21 to 27
Thermal Shock Resistance, points 17
19 to 27

Alloy Composition

Carbon (C), % 0 to 0.1
0.3 to 0.4
Chromium (Cr), % 16 to 18
0.8 to 1.2
Iron (Fe), % 59.1 to 65.4
96.8 to 97.9
Manganese (Mn), % 7.0 to 9.0
0.7 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 8.0 to 9.0
0
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.060
0 to 0.015
Silicon (Si), % 3.5 to 4.5
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010