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EN 1.6956 Steel vs. S41425 Stainless Steel

Both EN 1.6956 steel and S41425 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 32 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 S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
280
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.6
17
Fatigue Strength, MPa 680
450
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 730
570
Tensile Strength: Ultimate (UTS), MPa 1230
920
Tensile Strength: Yield (Proof), MPa 1120
750

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
810
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
13
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.2
2.9
Embodied Energy, MJ/kg 31
40
Embodied Water, L/kg 60
120

Common Calculations

PREN (Pitting Resistance) 2.8
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
150
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
1420
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 43
33
Strength to Weight: Bending, points 32
27
Thermal Diffusivity, mm2/s 12
4.4
Thermal Shock Resistance, points 36
33

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.050
Chromium (Cr), % 1.0 to 1.7
12 to 15
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 92.4 to 95.3
74 to 81.9
Manganese (Mn), % 0.15 to 0.4
0.5 to 1.0
Molybdenum (Mo), % 0.3 to 0.6
1.5 to 2.0
Nickel (Ni), % 2.9 to 3.8
4.0 to 7.0
Nitrogen (N), % 0
0.060 to 0.12
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.0050
Vanadium (V), % 0.080 to 0.25
0