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AISI 415 Stainless Steel vs. ACI-ASTM CG6MMN Steel

Both AISI 415 stainless steel and ACI-ASTM CG6MMN steel are iron alloys. They have 76% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 415 stainless steel and the bottom bar is ACI-ASTM CG6MMN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
34
Fatigue Strength, MPa 430
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 900
670
Tensile Strength: Yield (Proof), MPa 700
320

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 780
1080
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 11
22
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
4.8
Embodied Energy, MJ/kg 35
68
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 15
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 26
22
Thermal Shock Resistance, points 33
14

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.060
Chromium (Cr), % 11.5 to 14
20.5 to 23.5
Iron (Fe), % 77.8 to 84
51.9 to 62.1
Manganese (Mn), % 0.5 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0.5 to 1.0
1.5 to 3.0
Nickel (Ni), % 3.5 to 5.5
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3