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S31100 Stainless Steel vs. ASTM A242 HSLA Steel

Both S31100 stainless steel and ASTM A242 HSLA steel are iron alloys. They have 67% 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 A242 HSLA steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 4.5
22
Fatigue Strength, MPa 330
230
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 580
310
Tensile Strength: Ultimate (UTS), MPa 1000
490
Tensile Strength: Yield (Proof), MPa 710
330

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
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
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
1.9
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.1
1.4
Embodied Energy, MJ/kg 44
18
Embodied Water, L/kg 170
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
95
Resilience: Unit (Modulus of Resilience), kJ/m3 1240
290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 36
17
Strength to Weight: Bending, points 29
17
Thermal Diffusivity, mm2/s 4.2
14
Thermal Shock Resistance, points 28
14

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.15
Chromium (Cr), % 25 to 27
0
Copper (Cu), % 0
0.2 to 0.45
Iron (Fe), % 63.6 to 69
98.2 to 99.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 6.0 to 7.0
0
Phosphorus (P), % 0 to 0.045
0 to 0.15
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050
Titanium (Ti), % 0 to 0.25
0