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EN 1.4938 Stainless Steel vs. ACI-ASTM CG6MMN Steel

Both EN 1.4938 stainless steel and ACI-ASTM CG6MMN steel are iron alloys. They have 74% of their average alloy composition in common. There are 27 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 EN 1.4938 stainless steel and the bottom bar is ACI-ASTM CG6MMN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16 to 17
34
Fatigue Strength, MPa 390 to 520
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
670
Tensile Strength: Yield (Proof), MPa 640 to 870
320

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 750
1080
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Base Metal Price, % relative 10
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
4.8
Embodied Energy, MJ/kg 47
68
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 18
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 37
24
Strength to Weight: Bending, points 26 to 29
22
Thermal Shock Resistance, points 30 to 35
14

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.060
Chromium (Cr), % 11 to 12.5
20.5 to 23.5
Iron (Fe), % 80.5 to 84.8
51.9 to 62.1
Manganese (Mn), % 0.4 to 0.9
4.0 to 6.0
Molybdenum (Mo), % 1.5 to 2.0
1.5 to 3.0
Nickel (Ni), % 2.0 to 3.0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0.020 to 0.040
0.2 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0.25 to 0.4
0.1 to 0.3