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ACI-ASTM CG6MMN Steel vs. S40920 Stainless Steel

Both ACI-ASTM CG6MMN steel and S40920 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG6MMN steel and the bottom bar is S40920 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
22
Fatigue Strength, MPa 260
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
75
Tensile Strength: Ultimate (UTS), MPa 670
430
Tensile Strength: Yield (Proof), MPa 320
190

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 460
450
Maximum Temperature: Mechanical, °C 1080
710
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 17
10

Otherwise Unclassified Properties

Base Metal Price, % relative 22
6.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.8
2.0
Embodied Energy, MJ/kg 68
28
Embodied Water, L/kg 180
94

Common Calculations

PREN (Pitting Resistance) 34
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
78
Resilience: Unit (Modulus of Resilience), kJ/m3 260
97
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
15
Strength to Weight: Bending, points 22
16
Thermal Shock Resistance, points 14
15

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20.5 to 23.5
10.5 to 11.7
Iron (Fe), % 51.9 to 62.1
85.1 to 89.4
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0 to 0.5
Niobium (Nb), % 0.1 to 0.3
0 to 0.1
Nitrogen (N), % 0.2 to 0.4
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.15 to 0.5
Vanadium (V), % 0.1 to 0.3
0