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ASTM A372 Grade J Steel vs. S40920 Stainless Steel

Both ASTM A372 grade J steel and S40920 stainless steel are iron alloys. They have 89% 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 ASTM A372 grade J steel and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 310
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 22
22
Fatigue Strength, MPa 310 to 570
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 410 to 630
270
Tensile Strength: Ultimate (UTS), MPa 650 to 1020
430
Tensile Strength: Yield (Proof), MPa 430 to 850
190

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
710
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
26
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
6.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.0
Embodied Energy, MJ/kg 20
28
Embodied Water, L/kg 51
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
78
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 1930
97
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 36
15
Strength to Weight: Bending, points 21 to 29
16
Thermal Diffusivity, mm2/s 12
6.9
Thermal Shock Resistance, points 19 to 30
15

Alloy Composition

Carbon (C), % 0.35 to 0.5
0 to 0.030
Chromium (Cr), % 0.8 to 1.2
10.5 to 11.7
Iron (Fe), % 96.7 to 97.8
85.1 to 89.4
Manganese (Mn), % 0.75 to 1.1
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0
0.15 to 0.5