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ASTM A372 Grade G Steel vs. AISI 384 Stainless Steel

Both ASTM A372 grade G steel and AISI 384 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade G steel and the bottom bar is AISI 384 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 280
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 650 to 910
480

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 410
910
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
3.7
Embodied Energy, MJ/kg 20
52
Embodied Water, L/kg 49
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 32
17
Strength to Weight: Bending, points 21 to 27
17
Thermal Diffusivity, mm2/s 13
4.3
Thermal Shock Resistance, points 19 to 27
11

Alloy Composition

Carbon (C), % 0.25 to 0.35
0 to 0.040
Chromium (Cr), % 0.4 to 0.65
15 to 17
Iron (Fe), % 97.4 to 98.4
60.9 to 68
Manganese (Mn), % 0.7 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0
17 to 19
Phosphorus (P), % 0 to 0.015
0 to 0.045
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030