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AISI 309S Stainless Steel vs. ASTM A372 Grade J Steel

Both AISI 309S stainless steel and ASTM A372 grade J steel are iron alloys. They have 64% 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 AISI 309S stainless steel and the bottom bar is ASTM A372 grade J steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200 to 310
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 42
17 to 22
Fatigue Strength, MPa 210
310 to 570
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 400
410 to 630
Tensile Strength: Ultimate (UTS), MPa 580
650 to 1020
Tensile Strength: Yield (Proof), MPa 230
430 to 850

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1080
420
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
44
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 19
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.5
Embodied Energy, MJ/kg 51
20
Embodied Water, L/kg 170
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
130 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 140
500 to 1930
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
23 to 36
Strength to Weight: Bending, points 20
21 to 29
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 13
19 to 30

Alloy Composition

Carbon (C), % 0 to 0.080
0.35 to 0.5
Chromium (Cr), % 22 to 24
0.8 to 1.2
Iron (Fe), % 58.1 to 66
96.7 to 97.8
Manganese (Mn), % 0 to 2.0
0.75 to 1.1
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 12 to 15
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 0.75
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010