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EN 1.4618 Stainless Steel vs. EN 1.3956 Stainless Steel

Both EN 1.4618 stainless steel and EN 1.3956 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4618 stainless steel and the bottom bar is EN 1.3956 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
27
Fatigue Strength, MPa 240 to 250
240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 680 to 700
650
Tensile Strength: Yield (Proof), MPa 250 to 260
330

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
460
Maximum Temperature: Mechanical, °C 900
1080
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1360
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 13
22
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.7
4.8
Embodied Energy, MJ/kg 39
68
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 19
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
150
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 25
23
Strength to Weight: Bending, points 22 to 23
21
Thermal Shock Resistance, points 15 to 16
18

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.060
Chromium (Cr), % 16.5 to 18.5
20.5 to 23.5
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 62.7 to 72.5
51.9 to 62.1
Manganese (Mn), % 5.5 to 9.5
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 4.5 to 5.5
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0 to 0.15
0.2 to 0.4
Phosphorus (P), % 0 to 0.070
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0
0.1 to 0.3