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S31100 Stainless Steel vs. ASTM A372 Grade L Steel

Both S31100 stainless steel and ASTM A372 grade L steel 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 S31100 stainless steel and the bottom bar is ASTM A372 grade L steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
350
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 4.5
14
Fatigue Strength, MPa 330
670
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 580
700
Tensile Strength: Ultimate (UTS), MPa 1000
1160
Tensile Strength: Yield (Proof), MPa 710
1040

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
430
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 16
3.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.7
Embodied Energy, MJ/kg 44
22
Embodied Water, L/kg 170
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
150
Resilience: Unit (Modulus of Resilience), kJ/m3 1240
2890
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 36
41
Strength to Weight: Bending, points 29
31
Thermal Diffusivity, mm2/s 4.2
12
Thermal Shock Resistance, points 28
34

Alloy Composition

Carbon (C), % 0 to 0.060
0.38 to 0.43
Chromium (Cr), % 25 to 27
0.7 to 0.9
Iron (Fe), % 63.6 to 69
95.2 to 96.3
Manganese (Mn), % 0 to 1.0
0.6 to 0.8
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 6.0 to 7.0
1.7 to 2.0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0 to 0.25
0