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EN 1.4857 Stainless Steel vs. EN 1.6956 Steel

Both EN 1.4857 stainless steel and EN 1.6956 steel are iron alloys. They have 42% 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 1.4857 stainless steel and the bottom bar is EN 1.6956 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
370
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.7
9.6
Fatigue Strength, MPa 120
680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 500
1230
Tensile Strength: Yield (Proof), MPa 250
1120

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1370
1460
Melting Onset (Solidus), °C 1320
1420
Specific Heat Capacity, J/kg-K 480
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 2.0
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 34
5.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 5.7
2.2
Embodied Energy, MJ/kg 81
31
Embodied Water, L/kg 220
60

Common Calculations

PREN (Pitting Resistance) 26
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
3320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
43
Strength to Weight: Bending, points 18
32
Thermal Diffusivity, mm2/s 3.4
12
Thermal Shock Resistance, points 11
36

Alloy Composition

Carbon (C), % 0.3 to 0.5
0.28 to 0.38
Chromium (Cr), % 24 to 27
1.0 to 1.7
Iron (Fe), % 31.4 to 41.7
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), % 33 to 36
2.9 to 3.8
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 1.0 to 2.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035
Vanadium (V), % 0
0.080 to 0.25