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EN 1.4959 Stainless Steel vs. EN 1.6956 Steel

Both EN 1.4959 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 1.4959 stainless steel and the bottom bar is EN 1.6956 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
9.6
Fatigue Strength, MPa 170
680
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 430
730
Tensile Strength: Ultimate (UTS), MPa 630
1230
Tensile Strength: Yield (Proof), MPa 190
1120

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1090
440
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
46
Thermal Expansion, µm/m-K 15
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 31
5.0
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 5.4
2.2
Embodied Energy, MJ/kg 76
31
Embodied Water, L/kg 200
60

Common Calculations

PREN (Pitting Resistance) 21
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
110
Resilience: Unit (Modulus of Resilience), kJ/m3 96
3320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
43
Strength to Weight: Bending, points 20
32
Thermal Diffusivity, mm2/s 3.2
12
Thermal Shock Resistance, points 15
36

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
0
Carbon (C), % 0.050 to 0.1
0.28 to 0.38
Chromium (Cr), % 19 to 22
1.0 to 1.7
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 39.4 to 50.5
92.4 to 95.3
Manganese (Mn), % 0 to 1.5
0.15 to 0.4
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 30 to 34
2.9 to 3.8
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.7
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035
Titanium (Ti), % 0.25 to 0.65
0
Vanadium (V), % 0
0.080 to 0.25