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EN 1.4859 Stainless Steel vs. EN 1.6956 Steel

Both EN 1.4859 stainless steel and EN 1.6956 steel are iron alloys. They have 50% 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 1.4859 stainless steel and the bottom bar is EN 1.6956 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
370
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
9.6
Fatigue Strength, MPa 140
680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 490
1230
Tensile Strength: Yield (Proof), MPa 210
1120

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1050
440
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 13
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 36
5.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 6.2
2.2
Embodied Energy, MJ/kg 88
31
Embodied Water, L/kg 190
60

Common Calculations

PREN (Pitting Resistance) 21
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
110
Resilience: Unit (Modulus of Resilience), kJ/m3 110
3320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
43
Strength to Weight: Bending, points 17
32
Thermal Diffusivity, mm2/s 3.4
12
Thermal Shock Resistance, points 11
36

Alloy Composition

Carbon (C), % 0.050 to 0.15
0.28 to 0.38
Chromium (Cr), % 19 to 21
1.0 to 1.7
Iron (Fe), % 40.3 to 49
92.4 to 95.3
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0 to 0.5
0.3 to 0.6
Nickel (Ni), % 31 to 33
2.9 to 3.8
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.5 to 1.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035
Vanadium (V), % 0
0.080 to 0.25