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S39274 Stainless Steel vs. ASTM A242 HSLA Steel

Both S39274 stainless steel and ASTM A242 HSLA steel are iron alloys. They have 62% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S39274 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 210
190
Elongation at Break, % 17
22
Fatigue Strength, MPa 380
230
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 560
310
Tensile Strength: Ultimate (UTS), MPa 900
490
Tensile Strength: Yield (Proof), MPa 620
330

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 24
1.9
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.3
1.4
Embodied Energy, MJ/kg 60
18
Embodied Water, L/kg 180
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
95
Resilience: Unit (Modulus of Resilience), kJ/m3 940
290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 4.2
14
Thermal Shock Resistance, points 25
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0.2 to 0.8
0.2 to 0.45
Iron (Fe), % 57 to 65.6
98.2 to 99.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 6.0 to 8.0
0
Nitrogen (N), % 0.24 to 0.32
0
Phosphorus (P), % 0 to 0.030
0 to 0.15
Silicon (Si), % 0 to 0.8
0
Sulfur (S), % 0 to 0.020
0 to 0.050
Tungsten (W), % 1.5 to 2.5
0