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EN 1.6956 Steel vs. EN 1.4424 Stainless Steel

Both EN 1.6956 steel and EN 1.4424 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.6956 steel and the bottom bar is EN 1.4424 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.6
28
Fatigue Strength, MPa 680
350 to 370
Impact Strength: V-Notched Charpy, J 25
90 to 91
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 730
520
Tensile Strength: Ultimate (UTS), MPa 1230
800
Tensile Strength: Yield (Proof), MPa 1120
480 to 500

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 440
960
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
13
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
15
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 2.2
3.4
Embodied Energy, MJ/kg 31
46
Embodied Water, L/kg 60
140

Common Calculations

PREN (Pitting Resistance) 2.8
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
580 to 640
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 43
29
Strength to Weight: Bending, points 32
25
Thermal Diffusivity, mm2/s 12
3.5
Thermal Shock Resistance, points 36
23

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.030
Chromium (Cr), % 1.0 to 1.7
18 to 19
Iron (Fe), % 92.4 to 95.3
68.6 to 72.4
Manganese (Mn), % 0.15 to 0.4
1.2 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
2.5 to 3.0
Nickel (Ni), % 2.9 to 3.8
4.5 to 5.2
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
1.4 to 2.0
Sulfur (S), % 0 to 0.035
0 to 0.015
Vanadium (V), % 0.080 to 0.25
0