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EN 1.4821 Stainless Steel vs. ACI-ASTM CT15C Steel

Both EN 1.4821 stainless steel and ACI-ASTM CT15C steel are iron alloys. They have 71% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4821 stainless steel and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
23
Fatigue Strength, MPa 280
130
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 730
500
Tensile Strength: Yield (Proof), MPa 450
190

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 450
560
Maximum Temperature: Mechanical, °C 1100
1080
Melting Completion (Liquidus), °C 1410
1410
Melting Onset (Solidus), °C 1370
1360
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 17
12
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
36
Density, g/cm3 7.6
8.0
Embodied Carbon, kg CO2/kg material 2.9
6.1
Embodied Energy, MJ/kg 41
88
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 26
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
90
Resilience: Unit (Modulus of Resilience), kJ/m3 500
93
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 26
17
Strength to Weight: Bending, points 23
17
Thermal Diffusivity, mm2/s 4.6
3.2
Thermal Shock Resistance, points 21
12

Alloy Composition

Carbon (C), % 0.1 to 0.2
0.050 to 0.15
Chromium (Cr), % 24.5 to 26.5
19 to 21
Iron (Fe), % 64.2 to 71.1
40.3 to 49.2
Manganese (Mn), % 0 to 2.0
0.15 to 1.5
Nickel (Ni), % 3.5 to 5.5
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0.8 to 1.5
0.15 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030