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EN 1.6956 Steel vs. EN 1.4318 Stainless Steel

Both EN 1.6956 steel and EN 1.4318 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, 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 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.6
44
Fatigue Strength, MPa 680
340
Impact Strength: V-Notched Charpy, J 25
85
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 730
520
Tensile Strength: Ultimate (UTS), MPa 1230
740
Tensile Strength: Yield (Proof), MPa 1120
380

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
910
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
13
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.8
Embodied Energy, MJ/kg 31
39
Embodied Water, L/kg 60
130

Common Calculations

PREN (Pitting Resistance) 2.8
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
280
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
360
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 43
27
Strength to Weight: Bending, points 32
23
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 36
17

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.030
Chromium (Cr), % 1.0 to 1.7
16.5 to 18.5
Iron (Fe), % 92.4 to 95.3
70.2 to 77.4
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
6.0 to 8.0
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.015
Vanadium (V), % 0.080 to 0.25
0