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ACI-ASTM CB30 Steel vs. EN 1.4021 Stainless Steel

Both ACI-ASTM CB30 steel and EN 1.4021 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 28 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 ACI-ASTM CB30 steel and the bottom bar is EN 1.4021 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 500
630 to 880
Tensile Strength: Yield (Proof), MPa 230
390 to 670

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 420
390
Maximum Temperature: Mechanical, °C 940
760
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 21
30
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.3
1.9
Embodied Energy, MJ/kg 33
27
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 20
13
Resilience: Unit (Modulus of Resilience), kJ/m3 140
400 to 1160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
23 to 31
Strength to Weight: Bending, points 18
21 to 26
Thermal Diffusivity, mm2/s 5.6
8.1
Thermal Shock Resistance, points 17
22 to 31

Alloy Composition

Carbon (C), % 0 to 0.3
0.16 to 0.25
Chromium (Cr), % 18 to 21
12 to 14
Copper (Cu), % 0 to 1.2
0
Iron (Fe), % 72.9 to 82
83.2 to 87.8
Manganese (Mn), % 0 to 1.0
0 to 1.5
Nickel (Ni), % 0 to 2.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.015