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EN 1.4874 Stainless Steel vs. EN 1.6956 Steel

Both EN 1.4874 stainless steel and EN 1.6956 steel are iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4874 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 210
190
Elongation at Break, % 6.7
9.6
Fatigue Strength, MPa 180
680
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 480
1230
Tensile Strength: Yield (Proof), MPa 360
1120

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1150
440
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
46
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
5.0
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 7.6
2.2
Embodied Energy, MJ/kg 110
31
Embodied Water, L/kg 290
60

Common Calculations

PREN (Pitting Resistance) 34
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
110
Resilience: Unit (Modulus of Resilience), kJ/m3 310
3320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
43
Strength to Weight: Bending, points 16
32
Thermal Diffusivity, mm2/s 3.3
12
Thermal Shock Resistance, points 11
36

Alloy Composition

Carbon (C), % 0.35 to 0.65
0.28 to 0.38
Chromium (Cr), % 19 to 22
1.0 to 1.7
Cobalt (Co), % 18.5 to 22
0
Iron (Fe), % 23 to 38.9
92.4 to 95.3
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 2.5 to 3.0
0.3 to 0.6
Nickel (Ni), % 18 to 22
2.9 to 3.8
Niobium (Nb), % 0.75 to 1.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035
Tungsten (W), % 2.0 to 3.0
0
Vanadium (V), % 0
0.080 to 0.25