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EN 1.6956 Steel vs. AISI 409Cb Stainless Steel

Both EN 1.6956 steel and AISI 409Cb stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.6956 steel and the bottom bar is AISI 409Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.6
24
Fatigue Strength, MPa 680
140
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 730
270
Tensile Strength: Ultimate (UTS), MPa 1230
420
Tensile Strength: Yield (Proof), MPa 1120
200

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 440
710
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
8.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.2
Embodied Energy, MJ/kg 31
31
Embodied Water, L/kg 60
94

Common Calculations

PREN (Pitting Resistance) 2.8
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
83
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 43
15
Strength to Weight: Bending, points 32
16
Thermal Diffusivity, mm2/s 12
6.7
Thermal Shock Resistance, points 36
15

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.060
Chromium (Cr), % 1.0 to 1.7
10.5 to 11.7
Iron (Fe), % 92.4 to 95.3
84.9 to 89.5
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 2.9 to 3.8
0 to 0.5
Niobium (Nb), % 0
0 to 0.75
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.040
Vanadium (V), % 0.080 to 0.25
0