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EN 1.4618 Stainless Steel vs. EN 1.4958 Stainless Steel

Both EN 1.4618 stainless steel and EN 1.4958 stainless steel are iron alloys. They have 70% 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 1.4958 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
40
Fatigue Strength, MPa 240 to 250
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 480 to 500
430
Tensile Strength: Ultimate (UTS), MPa 680 to 700
630
Tensile Strength: Yield (Proof), MPa 250 to 260
190

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
500
Maximum Temperature: Mechanical, °C 900
1090
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 16
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 13
30
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.7
5.3
Embodied Energy, MJ/kg 39
75
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 19
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
190
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
95
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 25
22
Strength to Weight: Bending, points 22 to 23
20
Thermal Diffusivity, mm2/s 4.0
3.2
Thermal Shock Resistance, points 15 to 16
15

Alloy Composition

Aluminum (Al), % 0
0.2 to 0.5
Carbon (C), % 0 to 0.1
0.030 to 0.080
Chromium (Cr), % 16.5 to 18.5
19 to 22
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 1.0 to 2.5
0 to 0.5
Iron (Fe), % 62.7 to 72.5
41.1 to 50.6
Manganese (Mn), % 5.5 to 9.5
0 to 1.5
Nickel (Ni), % 4.5 to 5.5
30 to 32.5
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.15
0 to 0.030
Phosphorus (P), % 0 to 0.070
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0
0.2 to 0.5