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EN 1.4618 Stainless Steel vs. EN 1.4658 Stainless Steel

Both EN 1.4618 stainless steel and EN 1.4658 stainless steel are iron alloys. They have 81% 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 1.4618 stainless steel and the bottom bar is EN 1.4658 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
260
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 51
28
Fatigue Strength, MPa 240 to 250
530
Impact Strength: V-Notched Charpy, J 90 to 91
110
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
81
Shear Strength, MPa 480 to 500
580
Tensile Strength: Ultimate (UTS), MPa 680 to 700
900
Tensile Strength: Yield (Proof), MPa 250 to 260
730

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
460
Maximum Temperature: Mechanical, °C 900
1100
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1360
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 13
25
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.7
4.5
Embodied Energy, MJ/kg 39
61
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 19
49
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
240
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
1280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 25
32
Strength to Weight: Bending, points 22 to 23
26
Thermal Diffusivity, mm2/s 4.0
4.3
Thermal Shock Resistance, points 15 to 16
24

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 16.5 to 18.5
26 to 29
Cobalt (Co), % 0
0.5 to 2.0
Copper (Cu), % 1.0 to 2.5
0 to 1.0
Iron (Fe), % 62.7 to 72.5
50.9 to 63.7
Manganese (Mn), % 5.5 to 9.5
0 to 1.5
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 4.5 to 5.5
5.5 to 9.5
Nitrogen (N), % 0 to 0.15
0.3 to 0.5
Phosphorus (P), % 0 to 0.070
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.010