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EN 1.4903 Stainless Steel vs. ACI-ASTM CB30 Steel

Both EN 1.4903 stainless steel and ACI-ASTM CB30 steel are iron alloys. They have 87% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4903 stainless steel and the bottom bar is ACI-ASTM CB30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 670 to 680
500
Tensile Strength: Yield (Proof), MPa 500
230

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 380
420
Maximum Temperature: Mechanical, °C 650
940
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 26
21
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
10
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.3
Embodied Energy, MJ/kg 36
33
Embodied Water, L/kg 88
130

Common Calculations

PREN (Pitting Resistance) 13
20
Resilience: Unit (Modulus of Resilience), kJ/m3 650
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Diffusivity, mm2/s 7.0
5.6
Thermal Shock Resistance, points 23
17

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.12
0 to 0.3
Chromium (Cr), % 8.0 to 9.5
18 to 21
Copper (Cu), % 0 to 0.3
0 to 1.2
Iron (Fe), % 87.1 to 90.5
72.9 to 82
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 2.0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Vanadium (V), % 0.18 to 0.25
0