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EN 1.6956 Steel vs. EN 1.4887 Stainless Steel

Both EN 1.6956 steel and EN 1.4887 stainless steel are iron alloys. They have 45% of their average alloy composition in common. There are 32 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 1.6956 steel and the bottom bar is EN 1.4887 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.6
45
Fatigue Strength, MPa 680
280
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 730
400
Tensile Strength: Ultimate (UTS), MPa 1230
580
Tensile Strength: Yield (Proof), MPa 1120
300

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
12
Thermal Expansion, µm/m-K 13
15

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
39
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.2
6.7
Embodied Energy, MJ/kg 31
96
Embodied Water, L/kg 60
210

Common Calculations

PREN (Pitting Resistance) 2.8
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
220
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
230
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 43
20
Strength to Weight: Bending, points 32
19
Thermal Diffusivity, mm2/s 12
3.2
Thermal Shock Resistance, points 36
14

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.15
Chromium (Cr), % 1.0 to 1.7
20 to 23
Iron (Fe), % 92.4 to 95.3
34.2 to 45
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 2.9 to 3.8
33 to 37
Niobium (Nb), % 0
1.0 to 1.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 0.4
1.0 to 2.0
Sulfur (S), % 0 to 0.035
0 to 0.015
Vanadium (V), % 0.080 to 0.25
0