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EN 1.4318 Stainless Steel vs. AISI 409Cb Stainless Steel

Both EN 1.4318 stainless steel and AISI 409Cb stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4318 stainless steel and the bottom bar is AISI 409Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
24
Fatigue Strength, MPa 340
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 520
270
Tensile Strength: Ultimate (UTS), MPa 740
420
Tensile Strength: Yield (Proof), MPa 380
200

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 910
710
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.2
Embodied Energy, MJ/kg 39
31
Embodied Water, L/kg 130
94

Common Calculations

PREN (Pitting Resistance) 20
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
83
Resilience: Unit (Modulus of Resilience), kJ/m3 360
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
15
Strength to Weight: Bending, points 23
16
Thermal Diffusivity, mm2/s 4.0
6.7
Thermal Shock Resistance, points 17
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.060
Chromium (Cr), % 16.5 to 18.5
10.5 to 11.7
Iron (Fe), % 70.2 to 77.4
84.9 to 89.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 6.0 to 8.0
0 to 0.5
Niobium (Nb), % 0
0 to 0.75
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.040