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ACI-ASTM CG6MMN Steel vs. S39277 Stainless Steel

Both ACI-ASTM CG6MMN steel and S39277 stainless steel are iron alloys. They have 90% 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 S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
28
Fatigue Strength, MPa 260
480
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 670
930
Tensile Strength: Yield (Proof), MPa 320
660

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
450
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.8
4.2
Embodied Energy, MJ/kg 68
59
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 34
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
240
Resilience: Unit (Modulus of Resilience), kJ/m3 260
1070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
33
Strength to Weight: Bending, points 22
27
Thermal Shock Resistance, points 14
26

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.025
Chromium (Cr), % 20.5 to 23.5
24 to 26
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 51.9 to 62.1
56.8 to 64.3
Manganese (Mn), % 4.0 to 6.0
0 to 0.8
Molybdenum (Mo), % 1.5 to 3.0
3.0 to 4.0
Nickel (Ni), % 11.5 to 13.5
6.5 to 8.0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0.23 to 0.33
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.0020
Tungsten (W), % 0
0.8 to 1.2
Vanadium (V), % 0.1 to 0.3
0