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EN 1.3956 Stainless Steel vs. ACI-ASTM CG12 Steel

Both EN 1.3956 stainless steel and ACI-ASTM CG12 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.3956 stainless steel and the bottom bar is ACI-ASTM CG12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 27
40
Fatigue Strength, MPa 240
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 650
550
Tensile Strength: Yield (Proof), MPa 330
220

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
430
Maximum Temperature: Mechanical, °C 1080
1040
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.8
3.3
Embodied Energy, MJ/kg 68
48
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 34
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
180
Resilience: Unit (Modulus of Resilience), kJ/m3 270
120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
20
Strength to Weight: Bending, points 21
19
Thermal Shock Resistance, points 18
12

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.12
Chromium (Cr), % 20.5 to 23.5
20 to 23
Iron (Fe), % 51.9 to 62.1
60.3 to 70
Manganese (Mn), % 4.0 to 6.0
0 to 1.5
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
10 to 13
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.1 to 0.3
0