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EN 1.6958 Steel vs. S41425 Stainless Steel

Both EN 1.6958 steel and S41425 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 33 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 1.6958 steel and the bottom bar is S41425 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
280
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
17
Fatigue Strength, MPa 700
450
Poisson's Ratio 0.29
0.28
Reduction in Area, % 56
51
Shear Modulus, GPa 73
77
Shear Strength, MPa 700
570
Tensile Strength: Ultimate (UTS), MPa 1140
920
Tensile Strength: Yield (Proof), MPa 1070
750

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 450
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 47
16
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
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 2.0
2.9
Embodied Energy, MJ/kg 27
40
Embodied Water, L/kg 60
120

Common Calculations

PREN (Pitting Resistance) 2.9
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
150
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
1420
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 40
33
Strength to Weight: Bending, points 31
27
Thermal Diffusivity, mm2/s 13
4.4
Thermal Shock Resistance, points 39
33

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0 to 0.050
Chromium (Cr), % 1.2 to 1.7
12 to 15
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 92.6 to 94.5
74 to 81.9
Manganese (Mn), % 0.2 to 0.5
0.5 to 1.0
Molybdenum (Mo), % 0.35 to 0.55
1.5 to 2.0
Nickel (Ni), % 3.3 to 3.8
4.0 to 7.0
Nitrogen (N), % 0
0.060 to 0.12
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0.15 to 0.3
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.0050
Vanadium (V), % 0 to 0.12
0