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ACI-ASTM CG3M Steel vs. EN 1.3955 Stainless Steel

Both ACI-ASTM CG3M steel and EN 1.3955 stainless steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CG3M steel and the bottom bar is EN 1.3955 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
23
Fatigue Strength, MPa 200
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 580
520
Tensile Strength: Yield (Proof), MPa 270
220

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 1020
930
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 20
16
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.1
3.2
Embodied Energy, MJ/kg 56
45
Embodied Water, L/kg 160
140

Common Calculations

PREN (Pitting Resistance) 31
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
95
Resilience: Unit (Modulus of Resilience), kJ/m3 190
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
18
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 4.1
4.1
Thermal Shock Resistance, points 13
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 18 to 21
16.5 to 18.5
Iron (Fe), % 58.9 to 70
65.5 to 73.5
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0 to 0.75
Nickel (Ni), % 9.0 to 13
10 to 12
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030