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ASTM A372 Grade M Steel vs. S82011 Stainless Steel

Both ASTM A372 grade M steel and S82011 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade M steel and the bottom bar is S82011 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240 to 280
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18 to 21
34
Fatigue Strength, MPa 450 to 520
410
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
78
Shear Strength, MPa 510 to 570
490
Tensile Strength: Ultimate (UTS), MPa 810 to 910
730
Tensile Strength: Yield (Proof), MPa 660 to 770
510

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 450
1010
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.6
Embodied Energy, MJ/kg 27
37
Embodied Water, L/kg 61
150

Common Calculations

PREN (Pitting Resistance) 3.4
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1140 to 1580
660
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29 to 32
27
Strength to Weight: Bending, points 24 to 27
24
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 24 to 27
20

Alloy Composition

Carbon (C), % 0 to 0.23
0 to 0.030
Chromium (Cr), % 1.5 to 2.0
20.5 to 23.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 92.5 to 95.1
68.6 to 76.3
Manganese (Mn), % 0.2 to 0.4
2.0 to 3.0
Molybdenum (Mo), % 0.4 to 0.6
0.1 to 1.0
Nickel (Ni), % 2.8 to 3.9
1.0 to 2.0
Nitrogen (N), % 0
0.15 to 0.27
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Vanadium (V), % 0 to 0.080
0