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EN 1.4945 Stainless Steel vs. ACI-ASTM CB30 Steel

Both EN 1.4945 stainless steel and ACI-ASTM CB30 steel are iron alloys. They have 80% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4945 stainless steel and the bottom bar is ACI-ASTM CB30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 640 to 740
500
Tensile Strength: Yield (Proof), MPa 290 to 550
230

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 520
420
Maximum Temperature: Mechanical, °C 920
940
Melting Completion (Liquidus), °C 1490
1430
Melting Onset (Solidus), °C 1440
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
21
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 30
10
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 5.0
2.3
Embodied Energy, MJ/kg 73
33
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 23
20
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 25
18
Strength to Weight: Bending, points 20 to 22
18
Thermal Diffusivity, mm2/s 3.7
5.6
Thermal Shock Resistance, points 14 to 16
17

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.3
Chromium (Cr), % 15.5 to 17.5
18 to 21
Copper (Cu), % 0
0 to 1.2
Iron (Fe), % 57.9 to 65.7
72.9 to 82
Manganese (Mn), % 0 to 1.5
0 to 1.0
Nickel (Ni), % 15.5 to 17.5
0 to 2.0
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Tungsten (W), % 2.5 to 3.5
0